CN107388598A - Conduct heat heat accumulation detachable solar solar thermal utilization method and system - Google Patents
Conduct heat heat accumulation detachable solar solar thermal utilization method and system Download PDFInfo
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- CN107388598A CN107388598A CN201710576956.XA CN201710576956A CN107388598A CN 107388598 A CN107388598 A CN 107388598A CN 201710576956 A CN201710576956 A CN 201710576956A CN 107388598 A CN107388598 A CN 107388598A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/70—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits
- F24S10/75—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits with enlarged surfaces, e.g. with protrusions or corrugations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S20/00—Solar heat collectors specially adapted for particular uses or environments
- F24S20/20—Solar heat collectors for receiving concentrated solar energy, e.g. receivers for solar power plants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
- F24S80/20—Working fluids specially adapted for solar heat collectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/70—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits
- F24S10/75—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits with enlarged surfaces, e.g. with protrusions or corrugations
- F24S2010/751—Special fins
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/44—Heat exchange systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/50—Energy storage in industry with an added climate change mitigation effect
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- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
- Dispersion Chemistry (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses one kind heat transfer heat accumulation detachable solar solar thermal utilization method and system, the system includes solar energy heat-collection field, heat accumulation thermal desorption system and heat energy utilization system；The solar energy heat-collection field includes solar thermal collector, cold heat transfer media main pipe and high-temperature heat-transfer medium main pipe；The heat accumulation thermal desorption system and heat energy utilization system are connected in parallel between cold heat transfer media main pipe and high-temperature heat-transfer medium main pipe；The heat accumulation thermal desorption system includes heat accumulation tank body, the interior position different demarcation according to filling energy-accumulating medium of the heat storage can body is the top packing area, more than one intermediate filler area and bottom filling area being sequentially communicated, and each packing area is provided with corresponding entrance switching valve.The double-circuit system that this method is separated using heat transfer with heat accumulation, uses heat transfer medium cyclic absorption solar energy in solar energy heat-collection field, is exchanged heat in heat accumulation thermal desorption system by energy-accumulating medium and heat transfer medium to store or discharge heat energy.
Description
Technical field
The present invention relates to solar energy utilization technique, particularly relates to a kind of heat transfer heat accumulation detachable solar solar thermal utilization side
Method and system.
Background technology
Solar energy heat utilization refers to the centralized heat energy of solar radiation, is generated electricity, freezed, heating and heat
Chemical hydrogen manufacturing etc., realize the utilization to solar energy optical-thermal.Below by taking solar energy thermal-power-generating as an example, solar energy heat utilization is showed
Shape is briefly described.
The generating of solar energy thermal-power-generating, also known as focus type solar energy (Concentrating Solar Power, referred to as
CSP), it is that solar energy direct light is gathered together in a manner of focusing on a large amount of speculums, heating working medium, produces HTHP
Steam, by steam drive steam turbine power generation.According to solar energy acquisition mode, solar energy thermal-power-generating is mainly divided into：Solar energy
Slot type generating, solar energy tower type thermal generation, solar energy dish-style heat generate electricity.1) trough system is to utilize parabolic cylinder slot type speculum
Sunlight is focused on the receiver of tubulose, and the heat-transfer working medium heating in pipe is produced into steam, promotes conventional steam turbine power generation.
2) tower system is to utilize numerous heliostats, by solar heat radiation reflection to being placed on the high temperature heat collector at the top of high tower, is added
Hot working fluid produces superheated steam, or the water directly heated in heat collector produces superheated steam, and driving steam turbine generating set generates electricity.
3) disk system utilizes curved surface condenser mirror, and incident sunlight is gathered in into focal point, and heat absorption working medium, driving are heated in focal point
Heat engine, realize photoelectric conversion.
Solar energy thermal-power-generating is typically using fused salt, conduction oil or air as heat transfer medium.Wherein, fused salt is typically by all
Mixture such as potassium nitrate, sodium nitrate and sodium chloride is formed, and its feature is cheap, and heat-conductive characteristic is good, Ke Yi
It is stored under normal pressure in tun while carries out heat accumulation as energy-accumulating medium.However, because fused salt has relatively high solidification
Point (120~240 DEG C), the pipeline flowed through needs to be preheated when system starts, so as to cause extra energy expenditure；
In addition, fused salt material requires high to the corrosion resistance of tubing, so as to increase the use cost of tubing.Using conduction oil as biography
During thermal medium, it is transported in follow-up system and is utilized after conduction oil absorption solar thermal energy；When carrying out heat accumulation, conduction oil is made simultaneously
It is stored into for heat-storage medium in one or more heat conduction oil tanks, when needing to carry out heat release, by the high-temperature heat-conductive in heat conduction oil tank
Oil is delivered directly to follow-up system and utilized.However, current conduction oil operating temperature must be controlled on 400 degrees Celsius of left sides
The right side, beyond this temperature will cause heat conduction oil-breaking, viscosity improve and heat transfer efficiency reduce the problems such as, so as to limit too
The operating temperature and generating efficiency of positive energy thermal electric generator.It is specifically that low pressure is empty using scheme of the hot-air as heat transfer medium
Gas is heated first in solar collector, is sent to heat recovery steam production system (Heat Recovery Steam
Generating, abbreviation HRSG) in heating water produce steam, subsequent steam, which is sent in steam turbine, to do work, drive generator hair
Electricity.However, the shortcomings that this scheme is, low-pressure air thermal capacitance is smaller, and convection transfer rate is low, therefore causes empty in pipeline
Gas carries the ability of heat, and the flow velocity of air is too high, and integrated piping crushing is bigger.
Due to by round the clock, season, the factor such as weather influenceed, the heat energy of solar energy heat-collection field collection is not only to be interrupted but also not
Stable.In order to ensure the stability of solar energy thermal-power-generating and continuation, fossil fuel engine can be added in electricity generation system,
When sun photo-labile, supplemented and generated electricity by fossil fuel engine.Also have using the storage in parallel with solar energy heat-collection field
Hot systems, heat is stored in solar radiation energy abundance, heat is discharged in solar radiation energy deficiency and is generated electricity.It is existing
Hold over system typically carry out heat accumulation by the way of the heat transfer mediums such as fused salt, conduction oil store in storage tank；Because gas passes
The thermal capacitance of thermal medium is low, and heat storage capacity is poor, therefore this mode is not suitable for gaseous heat transfer medium.
In order to concentrate heat energy, generating efficiency is improved, the plane skylight/heat collector for generally receiving sunshine uses modularization cloth
Office, in systems during each group solar thermal collector uneven heating, can bring resistance of the heat transfer medium in pipe-line system unbalance, lead
The problem of deflection stream, cutout.Because gas working medium heat-transfer capability is poor, flow velocity is too high, and the reasons such as heat collecting pipeline is long, on
It is especially prominent in the groove type solar heat collecting field for use air as heat transfer medium to state problem, has had a strong impact on solar energy heating
The stable operation of field and heat transfer efficiency.
The content of the invention
It is an object of the invention to provide a kind of annual utilization hours height, the heat transfer heat accumulation separate type of system high efficiency diversification
Solar energy heat utilization method and system.
To achieve the above object, heat transfer heat accumulation detachable solar solar thermal utilization method provided by the present invention, is applied to
In solar energy heat utilization system including solar energy heat-collection field, heat accumulation thermal desorption system and heat energy utilization system, including following step
Suddenly：1) solar energy heat-collection field absorbs solar energy and heats cold heat transfer media, and gained high-temperature heat-transfer medium is transported to heat energy utilization
In system using and/or be transported in heat accumulation thermal desorption system and energy-accumulating medium heat exchange carry out heat accumulation；2) by the solar energy
The high-temperature heat-transfer medium of heat collecting field output obtained high-temperature heat-transfer medium while conveys with being heated up via the heat exchange of heat accumulation thermal desorption system
Utilized to heat energy utilization system, or the high-temperature heat-transfer medium that heat accumulation thermal desorption system heat release obtains individually is transported to heat energy
Using being utilized in system；3) high-temperature heat-transfer medium discharges the cold heat transfer media obtained after heat energy in heat energy utilization system
Return solar energy heat-collection field carries out thermal-arrest again and/or return heat accumulation thermal desorption system carries out heat exchange heating again；By with top
Formula realizes heat transfer heat accumulation detachable solar solar thermal utilization.
Preferably, heat transfer medium when the heat accumulation thermal desorption system carries out the flow direction of heat transfer medium during heat accumulation with carrying out heat release
Flow direction is on the contrary, opposite flow direction is advantageous to heat accumulation and heat utilization.
Preferably, when the heat accumulation thermal desorption system carries out heat accumulation, heat transfer medium flows through energy-accumulating medium from top to bottom；The storage
When exothermic heat system carries out heat release, heat transfer medium flows through energy-accumulating medium from the bottom up.Because heat-transfer medium temperature is higher, in pressure
On the premise of constant, density is typically also bigger, and by above-mentioned flow direction, during heat accumulation, heat transfer medium is small in upper temp high density, bottom
Temperature low-density is big, is advantageous to the top-down flowing of heat transfer medium；Conversely, during heat release, heat transfer medium is highly dense in upper temp
Spend small, temperature of lower low-density is big, is advantageous to the flowing of heat transfer medium from bottom to top.
Preferably, the heat accumulation thermal desorption system is provided with multiple filler subregions, and when carrying out heat accumulation, it is same that heat transfer medium presses subregion
When or successively pass through each filler subregion carry out heat accumulation；When carrying out heat release, heat transfer medium presses subregion simultaneously or successively by each filler
Subregion obtains heat.For the heat accumulation tank body of not subregion, heat transfer medium enters from one end, is flowed out from the other end, along stream during heat accumulation
It is gradually reduced to temperature, the heat accumulating quick heating first heated, the heat accumulating heating heated afterwards is slow；Edge flows to temperature during heat release
Gradually rise, the heat accumulating cooling of first heat release is fast, and the heat accumulating cooling of rear heat release is slow, thus causes hold over system heat accumulation to be put
The problems such as hot total amount is relatively low, heat conduction efficiency declines.And when using the heat exchange of multiple filler subregions, it can flexibly realize a variety of subregions
Heat exchange pattern, such as enter successively from different subregions, flowed out from last subregion；And for example enter simultaneously from the subregion of odd indexed
(enter from the outflow of the subregion of even number sequence number from the first subregion, the second subregion goes out, while from the 3rd subregion enters, the 4th subregion goes out),
Or enter from even number subregion, odd number subregion goes out；And for example enter respectively from one end of each subregion, from the other end stream of same subregion
Go out, etc..Optimal subregion heat exchange pattern can be selected during use according to actual conditions, to obtain optimal heat accumulation exothermal effect.
Preferably, the heat accumulation thermal desorption system includes heat accumulation tank body, according to loading energy-accumulating medium in the heat storage can body
Position different demarcation is the top packing area, more than one intermediate filler area and bottom filling area being sequentially communicated；The storage
When carrying out heat accumulation, the high-temperature heat-transfer medium from solar energy heat-collection field enters exothermic heat system at the top of heat accumulation tank body first
Enter, pass sequentially through top packing area, each intermediate filler area and bottom filling area, through the cold heat transfer media that heat exchange cooling obtains from
Solar energy heat-collection field is returned after the bottom outflow of heat accumulation tank body；When top packing area, temperature is increased to setting value, high temperature heat transfer
Medium switch to from below the packing area of top first intermediate filler area enter, pass sequentially through first intermediate filler area and
Each intermediate filler area and bottom filling area below, through the heat exchange obtained cold heat transfer media of cooling from the bottom of heat accumulation tank body
Solar energy heat-collection field is returned after outflow；When first intermediate filler area temperature is increased to setting value, high-temperature heat-transfer medium switching
To enter from second intermediate filler area, second intermediate filler area and each intermediate filler area and bottom below are passed sequentially through
Portion packing area, the cold heat transfer media obtained through heat exchange cooling return to solar energy heat-collection field after the outflow of the bottom of heat accumulation tank body；
The rest may be inferred, until high-temperature heat-transfer medium is switched to from the entrance of an intermediate filler area of bottom, is flowed out from bottom filling area,
And the temperature in bottom filling area is increased to setting value, the heat accumulation of heat accumulation tank body is completed, the cryogenic heat transfer obtained through heat exchange cooling
Medium returns to solar energy heat-collection field after the outflow of the bottom of heat accumulation tank body.The program is effectively avoided by the way of successively heat accumulation
Energy-accumulating medium hot-spot, and energy storage dead band is reduced, improve the heat accumulation efficiency of heat accumulation thermal desorption system.
Preferably, for the heat accumulation thermal desorption system when carrying out heat release, the cold heat transfer media from heat energy utilization system is first
First enter from the bottom of heat accumulation tank body, pass sequentially through bottom filling area, each intermediate filler area and top packing area, heated up through heat exchange
Obtained high-temperature heat-transfer medium enters heat energy utilization system after the outflow of the top of heat accumulation tank body；When bottom filling area temperature reduces
During to setting value, cold heat transfer media switches to be entered from first intermediate filler area above bottom filling area, is passed sequentially through
First intermediate filler area and its each the intermediate filler area and top packing area of top, the high temperature heat transfer obtained through heat exchange heating
Medium enters heat energy utilization system after the outflow of the top of heat accumulation tank body；When first intermediate filler area temperature is reduced to setting value
When, cold heat transfer media switches to be entered from second intermediate filler area, passes sequentially through second intermediate filler area and thereon
Each the intermediate filler area and top packing area of side, the high-temperature heat-transfer medium obtained through heat exchange heating flow out from the top of heat accumulation tank body
Enter heat energy utilization system afterwards；The rest may be inferred, until cold heat transfer media switches to enter from an intermediate filler area of the top
Enter, flowed out from top packing area, and the temperature of top packing area is increased to setting value, the heat release of heat accumulation tank body is completed, through changing
The high-temperature heat-transfer medium that heat heating obtains enters heat energy utilization system after the outflow of the top of heat accumulation tank body.The program is using successively
The mode of heat release, the exothermal efficiency of heat accumulation thermal desorption system is effectively increased, realize the speed responded when system changes to different load
Degree and effect.
Invention also provides one kind heat transfer heat accumulation detachable solar solar thermal utilization system, including solar energy heating
Field, heat accumulation thermal desorption system, heat energy utilization system, the first pressue device and the second pressue device, the solar energy heat-collection field include
Cold heat transfer media main pipe as cold heat transfer media input and the high temperature heat transfer as high-temperature heat-transfer medium output end are situated between
Matter main pipe；The heat accumulation thermal desorption system and heat energy utilization system are arranged in parallel at cold heat transfer media main pipe and high-temperature heat-transfer medium
Between main pipe；The heat accumulation thermal desorption system includes heat accumulation tank body, and the interior position according to filling energy-accumulating medium of the heat storage can body is not
It is same to be divided into the top packing area being sequentially communicated, more than one intermediate filler area and bottom filling area；Wherein top filler
Area is connected by top switching valve with high-temperature heat-transfer medium main pipe, and bottom filling area passes through bottom switching valve and cold heat transfer media
Main pipe is connected, and each intermediate filler area is connected by corresponding each middle switching valve with middle area connecting tube；In described
Between one end of area's connecting tube be connected by middle area high temperature switching valve with high-temperature heat-transfer medium main pipe, the middle area connecting tube
The other end is connected by middle low temp area switching valve with cold heat transfer media main pipe；First pressue device is arranged on low temperature biography
Pipeline section of the thermal medium main pipe between heat accumulation thermal desorption system and solar energy heat-collection field；Second pressue device is arranged on low temperature biography
Pipeline section of the thermal medium main pipe between heat accumulation thermal desorption system and heat energy utilization system.First pressue device, the second pressurization dress
Put by being pressurizeed to heat transfer medium to supplement the pressure that it loses in flow process, pressurizeed according to the phase of heat transfer medium
Pump or fan etc. may be selected in device.
Preferably, the solar energy heat-collection field includes some solar thermal collectors in vertically and horizontally array arrangement, each vertical
Each solar thermal collector in nematic shares the thermal-collecting tube of a segmentation series connection insertion, the input and low temperature of each thermal-collecting tube
Heat transfer medium main pipe is connected, and the output end of each thermal-collecting tube is connected with high-temperature heat-transfer medium main pipe；Between adjacent two thermal-collecting tubes
Pass through some spaced distribution header lateral direction penetratings.The program uses distribution header to solve gaseous heat transfer medium in complexity
Pipe-line system in resistance unbalance the problem of causing bias current, cutout, heat transfer medium enter after distribution header change it is original straight
The flow direction of line style, realize intersection flow direction of the heat transfer medium between each heat transfer unit so that overall solar energy heat-collection field becomes
In being heated evenly, pressure-control valve is further set respectively on each thermal-collecting tube, adjusts solar energy heat-collection field air-flow stream in real time
Amount distribution, realizes the reliable and stable operation of total system.
Preferably, the thermal-collecting tube is preferably with inner fin or the thermal-collecting tube of interior extension fin.Inner fin can be straight
Fin, triangular fin, annular fin etc.；Can also be using prefabricated fin shape metal grate be fastened in thermal-collecting tube etc.
With conversion pattern.Compared with the thermal-collecting tube of straight tube, bellows or screw thread tubular construction, the thermal-arrest with inner fin or interior extension fin
The heat transfer area of pipe is bigger, improves heat transfer efficiency, realizes that passive facilitation conducts heat.
Preferably, the heat transfer medium of the solar energy heat-collection field is compressed gas medium, and the compressed gas medium includes
One or more in air, carbon dioxide, nitrogen, helium, methane, vapor；The circulating pressure of the compressed gas medium
Not less than 0.1Mpa, preferably 0.1Mpa~10MPa, more preferably 0.1Mpa~3MPa.It is as a whole set of using gas
The heat transfer medium of system, has high temperature resistant, corrosion-free and cheap, safe and non-toxic, the simple characteristic of acquisition, and the system that can be greatly reduced is built
It is set as this and operation expense；Follow-up heat power generating system can realize that diversification system utilizes simultaneously, such as Rankine cycle, cloth
Thunder circulation etc., system configuration is flexible, widely used, can realize distributed energy resource system in combination with cold, heat and electricity triple supply.
Gaseous heat transfer medium is with pressure to improve density, improves ability and heat transfer efficiency that gas carries heat.It is highly preferred that the heat transfer
Medium is the gas medium for being mixed with solia particle；The particle diameter of the solia particle is chosen as 0.01 μm~10mm, preferably 1 μm~
1mm, solia particle can form relatively stable gas-solid mixture with gas medium in the range of the preferable particle size, be advantageous to it is long away from
From conveying, particle deposition can be substantially reduced, reduces the pressure loss and the very long groove of the abrasion to pipe-line system, especially thermal-collecting tube
Formula solar thermal collector, using less particle diameter advantageously.The solia particle is without the micro- without phase transformation of phase-change material composition
Grain, or to form capsule shell by solid heat conductive material, the phase transformation capsule particulate of capsule filling being made up of phase-change material.Institute
It is preferably factory's dust to state no phase transformation particulate, such as the boiler of power plant flying dust of dust pelletizing system trapping, to realize the waste of dust profit
With.In diabatic process, the heat transfer efficiency of gas medium can be improved by adding solia particle.When using the capsule for including phase-change material
During particulate, capsule particulate it is heated with to the cold when undergo phase transition process, the phase-change material in it passes through phase transformation release or absorbs heat energy
Actively to improve augmentation of heat transfer coefficient, heat transfer area is reduced, reduces system pipeline size and follow-up boiler heat exchange equipment size, drop
Low investment cost.
Above by the optimization to thermal-arrest tubular construction and heat transfer medium material, realize and actively mutually tied with passive facilitation heat transfer
Close, greatly improve flowing heat transfer coefficient of the gaseous heat transfer medium in thermal-collecting tube so that in the change of thermal-collecting tube caliber size not
When big, realize and ensure enough heat transfer efficiencys in the case of gas economic velocity, reduce SR and pipe wear, and then
Greatly reduce system cost.
Alternatively, the heat transfer medium of the solar energy heat-collection field is alternatively liquid heat-transfer medium, the liquid heat-transfer medium
Including the one or more in conduction oil, water, ammoniacal liquor.
Preferably, the energy-accumulating medium is high specific heat solid material or phase-change heat-storage material, and its shape can be spherical, post
Shape, netted, rhombus or irregular shape etc., it is deposited in heat-storing device and forms loose structure.It is highly preferred that the high specific heat
Solid material is the one or more in quartz sand, iron sand, cast iron, iron ore, cobblestone；The phase-change heat-storage material includes solid
The shell that body Heat Conduction Material is formed and the phase-change material filler being encapsulated in shell.
Alternatively, the energy-accumulating medium is liquid phase heat accumulating (such as fused salt)；The heat transfer medium passes through indirect heat exchange
Thermal energy storage is obtained heat energy by mode into liquid phase heat accumulating or from liquid phase heat accumulating.
Alternatively, the heat energy utilization system is in electricity generation system, refrigeration system and heating system using heat energy
One or more systems.
Beneficial effects of the present invention are as follows：
1) double-circuit system separated using heat transfer with heat accumulation, uses heat transfer medium cyclic absorption in solar energy heat-collection field
Solar energy, exchanged heat in heat accumulation thermal desorption system by energy-accumulating medium and heat transfer medium to store or discharge heat energy.Cross herein
Cheng Zhong, energy-accumulating medium only carries out heat accumulation heat release, without circulating heat transfer；Heat transfer medium only carries out circulating heat transfer, without heat accumulation
Heat release, energy-accumulating medium and heat transfer medium separation operation, Each performs its own functions, thus energy storage and heat transfer can respectively from high-efficiency energy-storage medium and
Efficient heat transfer medium, there is the advantages of heat accumulation and efficient, reliable exothermic process.
2) total system uses reliable system allocation plan, during solar heat energy abundance, is circulated by heat transfer medium efficient
Heat accumulation；During solar heat energy deficiency, used for follow-up system come efficient heat release by heat transfer medium circulation, also can in extreme case
Ensure the reliability service of round-the-clock generating or other follow-up process systems.
Brief description of the drawings
Fig. 1 is the general structure block diagram of heat transfer heat accumulation detachable solar solar thermal utilization system provided by the present invention.
Fig. 2 is the process schematic representation of solar energy heat utilization system in Fig. 1.
Fig. 3 is the schematic cross-section of thermal-collecting tube in Fig. 2.
Fig. 4 is the judgement schematic flow sheet of heat transfer heat accumulation detachable solar solar thermal utilization method provided by the present invention.
Wherein：Solar energy heat-collection field 100, cold heat transfer media main pipe 101, high-temperature heat-transfer medium main pipe 102, standby other pipe
103rd, it is distributed header 104, solar thermal collector 105, thermal-collecting tube 106, pressure-control valve 107, the first standby switching valve 108, the
Two standby switching valves 109, glass bushing 110, metal inner pipe 111, inner fin 112, heat accumulation thermal desorption system 200, heat accumulation tank body
201st, middle switching valve 202 (including 202a, 202b, 202c), top switching valve 203, bottom switching valve 204, middle area high temperature
Switching valve 205, middle low temp area switching valve 206, middle area connecting tube 207, heat accumulation transfer valve 208, thermal-arrest return to valve 209, heat
Using transfer valve 210, top packing area 211, intermediate filler area 212 (including 212a, 212b, 212c), bottom filling area 213,
Heat energy utilization system 300, the first pressue device 400, the second pressue device 500
Embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1, 2, heat transfer heat accumulation detachable solar solar thermal utilization system provided by the present invention, including solar energy
Heat collecting field 100, heat accumulation thermal desorption system 200, heat energy utilization system 300, the first pressue device 400 and the second pressue device 500.Too
Positive energy heat collecting field 100 includes being situated between as the cold heat transfer media main pipe 101 of cold heat transfer media input and as high temperature heat transfer
The high-temperature heat-transfer medium main pipe 102 of matter output end.Heat accumulation thermal desorption system 200 and heat energy utilization system 300 are arranged in parallel at low temperature
Between heat transfer medium main pipe 101 and high-temperature heat-transfer medium main pipe 102.
Solar energy heat-collection field 100 includes some solar thermal collectors 105 in vertically and horizontally array arrangement, in each longitudinal row
Each solar thermal collector 105 share one segmentation series connection insertion thermal-collecting tube 106, the input of each thermal-collecting tube 106 with
Cold heat transfer media main pipe 101 is connected, and the output end of each thermal-collecting tube 106 is connected with high-temperature heat-transfer medium main pipe 102.Adjacent two
Pass through some spaced distribution lateral direction penetratings of header 104 between root thermal-collecting tube 106.The low temperature of solar energy heat-collection field 100 passes
Standby other pipe 103 is provided between thermal medium input and high-temperature heat-transfer medium output end, is provided with the first standby switching
Valve 108, the second standby switching valve 109, standby other pipe 103 add the flexibility of pipe-line system, available for blowing pipeline, heat transfer
Medium back flow etc..A pressure-control valve 107 is respectively arranged with each thermal-collecting tube 106, adjusts total system air-flow stream in real time
Amount distribution, realizes the reliable and stable operation of total system.It is arranged in parallel in addition, solar energy heat-collection field 100 is overall using reversed return type, with
Reduce droop loss of the heat transfer medium in the circulatory system.The heat transfer medium of solar energy heat-collection field 100 is compressed gas medium, its
In be mixed with solia particle, the solia particle is by solid heat conductive material to form capsule shell, capsule filling is made up of phase-change material
The phase transformation capsule particulate of thing.As shown in figure 3, thermal-collecting tube 106 includes glass bushing 110 and metal inner pipe 111, metal inner pipe 111
Inwall on be provided with inner fin 112.
Heat accumulation thermal desorption system 200 includes at least one heat storage can, can be gone here and there each heat storage can using during multiple heat storage cans
Parallel combination, each heat storage can are respectively adopted method provided by the invention and carry out heat accumulation, heat release again.The heat storage can includes heat storage can
Body 201, the inner chamber of heat accumulation tank body 201 are the top packing area being sequentially communicated according to the position different demarcation for loading energy-accumulating medium
211st, intermediate filler area 212 (including 212a, 212b and 212c) and bottom filling area 213.Wherein top packing area 211 is logical
Cross top switching valve 203 with high-temperature heat-transfer medium main pipe 102 to be connected, bottom filling area 213 passes through bottom switching valve 204 and low temperature
Heat transfer medium main pipe 101 is connected, each intermediate filler area 212 by corresponding each middle switching valve 202 (including
202a, 202b, 202c) it is connected with middle area connecting tube 207.One end of middle area connecting tube 207 is switched by middle area high temperature
Valve 205 is connected with high-temperature heat-transfer medium main pipe 102, and the other end of middle area connecting tube 207 passes through middle low temp area switching valve 206
It is connected with cold heat transfer media main pipe 101.Energy-accumulating medium is high specific heat solid material or phase-change heat-storage material, is deposited in heat accumulation dress
Put and loose structure is formed in 201.High specific heat solid material can use one in quartz sand, iron sand, cast iron, iron ore, cobblestone
Kind is a variety of.The phase-change material filling that phase-change heat-storage material includes the solid heat conductive material shell formed and is encapsulated in shell
Thing.
First pressue device 400, thermal-arrest return valve 209 are arranged on cold heat transfer media main pipe 101 and correspond to heat accumulation heat release
On pipeline section between system 200 and solar energy heat-collection field 100.Second pressue device 500 is arranged on cold heat transfer media main pipe 101
Corresponding on the pipeline section between heat accumulation thermal desorption system 200 and heat energy utilization system 300.Heat accumulation transfer valve 208, heat utilization transfer valve
210, which are separately positioned on high-temperature heat-transfer medium main pipe 102, corresponds between solar energy heat-collection field 100 and heat accumulation thermal desorption system 200, stores up
On pipeline section between exothermic heat system 200 and heat energy utilization system 300.Thermal-arrest returns to valve 209, heat accumulation transfer valve 208, heat utilization
Transfer valve 210 switches over according to requirements of process.
Heat storage can, the outer surface of high-temperature heat-transfer medium main pipe 102 are wrapped up using high heat preservation performance material, reduce thermal losses.
As shown in figure 4, invention also provides the carry out solar energy optical-thermal using above-mentioned solar energy heat utilization system
The method utilized, comprises the following steps：
1) solar energy heat-collection field 100 absorbs solar energy and heats cold heat transfer media, and gained high-temperature heat-transfer medium is transported to
In heat energy utilization system 300 using and/or be transported in heat accumulation thermal desorption system 200 and energy-accumulating medium heat exchange carry out heat accumulation.
It is 150 DEG C~350 DEG C that cold heat transfer media, which enters the temperature of solar energy heat-collection field 100, high-temperature heat-transfer medium outflow solar energy heating
100 temperature of field are 200 DEG C~800 DEG C；Heat transfer medium system circulation pressure is 0.1Mpa~3MPa.
2) high-temperature heat-transfer medium that solar energy heat-collection field 100 exports via the heat exchange heating of heat accumulation thermal desorption system 200 with obtaining
High-temperature heat-transfer medium be transported to heat energy utilization system 300 simultaneously and utilized, or individually by the heat release of heat accumulation thermal desorption system 200
Obtained high-temperature heat-transfer medium is transported in heat energy utilization system 300 and utilized；
3) cold heat transfer media obtained after high-temperature heat-transfer medium release heat energy returns to solar energy heat-collection field 100 and carried out again
Thermal-arrest and/or return heat accumulation thermal desorption system 200 carry out heat exchange heating again.By realizing heat transfer heat accumulation separate type too with upper type
Positive energy solar thermal utilization.
Specifically, this method selects heat accumulation, heat release or heat utilization according to following determination strategy：
1) illumination condition is determined whether, if non-illuminated conditions and heat energy utilization system 300 has heat utilization demand, by heat accumulation
The heat release of thermal desorption system 200 stands alone as the heat supply of heat energy utilization system 300.
If 2) there is illumination condition, and height of the heat energy utilization system 300 without thermal demand, the then output of solar energy heat-collection field 100
Warm heat transfer medium fully enters heat accumulation thermal desorption system 200 and carries out heat accumulation.
If 3) there is illumination condition, and heat energy utilization system 300 has thermal demand, then to the thermal-arrest of solar energy heat-collection field 100
Measure and contrasted with the thermal demand amount of heat energy utilization system 300, entered 4), 5) or 6) according to comparative result.
4) if heat-collecting capacity is more than thermal demand, meet heat energy in the high-temperature heat-transfer medium that solar energy heat-collection field 100 exports
Heat energy utilization system 300 is transported to using the part of the demand of system 300 to be utilized, the part exceeded is delivered to heat accumulation heat release
System 200 carries out heat accumulation.
If 5) heat-collecting capacity is equal to thermal demand, the high-temperature heat-transfer medium that solar energy heat-collection field 100 exports fully enters heat
It can be utilized using system 300.
If 6) heat-collecting capacity is less than thermal demand, solar energy heat-collection field 100 is heated into obtained high-temperature heat-transfer medium and storage
Exothermic heat system 200, which exchanges heat, obtained high-temperature heat-transfer medium while to be inputted heat energy utilization system 300 and is utilized.
It is as follows that heat accumulation thermal desorption system 200 carries out heat accumulation, the concrete operation step of heat release：
For heat accumulation thermal desorption system 200 when carrying out heat accumulation, the high-temperature heat-transfer medium from solar energy heat-collection field 100 is first from storage
The top of hot tank body 201 enters, and passes sequentially through top packing area 211, intermediate filler area 212a~212c and bottom filling area
213, the cold heat transfer media obtained through heat exchange cooling returns to solar energy heat-collection field 100 after the outflow of the bottom of heat accumulation tank body 201.
When top packing area 211, temperature is increased to setting value, high-temperature heat-transfer medium switches to first from the lower section of top packing area 211
Individual intermediate filler area 212a enters, and passes sequentially through intermediate filler area 212a, intermediate filler area 212b, intermediate filler area 212c and bottom
Portion packing area 213, the cold heat transfer media obtained through heat exchange cooling return to solar energy collection after the outflow of the bottom of heat accumulation tank body 201
Thermal field 100.When middle packing area 212a temperature is increased to setting value, high-temperature heat-transfer medium is switched to from second intermediate filler
Area 212b enters, and passes sequentially through intermediate filler area 212b, intermediate filler area 212c and bottom filling area 213, cools through heat exchange
The cold heat transfer media arrived returns to solar energy heat-collection field 100 after the outflow of the bottom of heat accumulation tank body 201.The rest may be inferred, until high
Warm heat transfer medium switches to the intermediate filler area 212c entrance from bottom, is flowed out from bottom filling area 213, and make centre
The temperature in packing area 212c or bottom filling area 213 (selection one) is increased to setting value, completes the storage of heat accumulation tank body 201
Heat, the cold heat transfer media obtained through heat exchange cooling return to solar energy heat-collection field 100 after the outflow of the bottom of heat accumulation tank body 201.
The specific transfer sequence of each valve refers to table 1.
The heat accumulation thermal desorption system of table 1 valve transfer order in heat accumulation
Note：In upper table, if only carrying out heat accumulation, without heat energy utilization, then 210 is normally closed；If the two is carried out simultaneously, 210
It is normally opened.
For heat accumulation thermal desorption system 200 when carrying out heat release, the cold heat transfer media from heat energy utilization system 300 is first from storage
The bottom of hot tank body 201 enters, and passes sequentially through bottom filling area 213, intermediate filler area 212c, 212b, 212c and top filler
Area 211, the high-temperature heat-transfer medium obtained through heat exchange heating enter heat energy utilization system after the outflow of the top of heat accumulation tank body 201
300.When bottom filling area 213, temperature is reduced to setting value, cold heat transfer media is switched to above bottom filling area 213
First intermediate filler area 212c enters, and passes sequentially through intermediate filler area 212c, intermediate filler area 212b, intermediate filler area 212a
With top packing area 211, the high-temperature heat-transfer medium obtained through heat exchange heating enters heat energy after the outflow of the top of heat accumulation tank body 201
Utilize system 300.When first intermediate filler area 212c temperature is reduced to setting value, cold heat transfer media is switched to from second
Individual intermediate filler area 212b enters, and passes sequentially through intermediate filler area 212b, intermediate filler area 212a and top packing area 211, passes through
The high-temperature heat-transfer medium that heat exchange heating obtains enters heat energy utilization system 300 after the outflow of the top of heat accumulation tank body 201.Class according to this
Push away, until cold heat transfer media switches to the intermediate filler area 212a entrance from the top, flowed from top packing area 211
Go out, and the temperature of intermediate filler area 212a or top packing area 211 (selection one) is increased to setting value, complete heat accumulation
The heat release of tank body 201, the high-temperature heat-transfer medium obtained through heat exchange heating enter heat energy profit after the outflow of the top of heat accumulation tank body 201
With system 300.The specific transfer sequence of each valve refers to table 2.
The heat accumulation thermal desorption system of table 2 valve transfer order in heat release
Note：In upper table, if by the independent heat supply of heat accumulation thermal desorption system, solar energy heat-collection field not heat supply, then 208,209 is normally closed；
If the two heat supply simultaneously, 208,209 is normally opened.
, can be further using outer for auxiliary when the energy storage of heat accumulation thermal desorption system 200 deficiency or load are too big or do not have solar energy
Fuel combustion is helped to provide heat energy, to meet the needs of heat energy utilization system 300.
By taking trough solar power generation system as an example, its technique includes but is not limited to using slot type, tower, dish this embodiment
The similar solar power system of the other forms such as formula.
Claims (16)
1. one kind heat transfer heat accumulation detachable solar solar thermal utilization method, puts applied to including solar energy heat-collection field (100), heat accumulation
In the solar energy heat utilization system of hot systems (200) and heat energy utilization system (300), it is characterised in that：Comprise the following steps：
1) solar energy heat-collection field (100) absorbs solar energy and heats cold heat transfer media, and gained high-temperature heat-transfer medium is transported to heat
Can utilize in system (300) using and/or be transported in heat accumulation thermal desorption system (200) with energy-accumulating medium exchange heat stored up
Heat；
2) high-temperature heat-transfer medium of the solar energy heat-collection field (100) output is risen with being exchanged heat via heat accumulation thermal desorption system (200)
High-temperature heat-transfer medium that temperature obtains while it is transported to heat energy utilization system (300) and is utilized, or individually by heat accumulation heat release system
The high-temperature heat-transfer medium that system (200) heat release obtains, which is transported in heat energy utilization system (300), to be utilized；
3) cold heat transfer media that high-temperature heat-transfer medium obtains in heat energy utilization system (300) after release heat energy returns to solar energy
Heat collecting field (100) carries out thermal-arrest again and/or return heat accumulation thermal desorption system (200) carries out heat exchange heating again；
By realizing heat transfer heat accumulation detachable solar solar thermal utilization with upper type.
2. heat transfer heat accumulation detachable solar solar thermal utilization method according to claim 1, it is characterised in that：The heat accumulation
The flow direction of heat transfer medium is opposite when thermal desorption system (200) carries out the flow direction of heat transfer medium during heat accumulation with carrying out heat release.
3. heat transfer heat accumulation detachable solar solar thermal utilization method according to claim 2, it is characterised in that：The heat accumulation
When thermal desorption system (200) carries out heat accumulation, heat transfer medium flows through energy-accumulating medium from top to bottom；The heat accumulation thermal desorption system (200) is entered
During row heat release, heat transfer medium flows through energy-accumulating medium from the bottom up.
4. heat transfer heat accumulation detachable solar solar thermal utilization method according to claim 1, it is characterised in that：The heat accumulation
Thermal desorption system (200) is provided with multiple filler subregions, and when carrying out heat accumulation, heat transfer medium presses subregion simultaneously or successively by each filler
Subregion carries out heat accumulation；When carrying out heat release, heat transfer medium presses subregion and obtains heat by each filler subregion simultaneously or successively.
5. according to heat transfer heat accumulation detachable solar solar thermal utilization method according to any one of claims 1 to 4, its feature exists
In：The heat accumulation thermal desorption system (200) includes heat accumulation tank body (201), and the heat accumulation tank body (201) is interior according to filling energy-accumulating medium
Position different demarcation be the top packing area (211), more than one intermediate filler area (212) and bottom being sequentially communicated
Packing area (213)；The heat accumulation thermal desorption system (200) is when carrying out heat accumulation, the high temperature heat transfer from solar energy heat-collection field (100)
Medium enters from the top of heat accumulation tank body (201) first, pass sequentially through top packing area (211), each intermediate filler area (212) and
Bottom filling area (213), the cold heat transfer media obtained through heat exchange cooling return too after the outflow of the bottom of heat accumulation tank body (201)
Positive energy heat collecting field (100)；
When top packing area (211) temperature is increased to setting value, high-temperature heat-transfer medium is switched under top packing area (211)
First intermediate filler area (212) of side enters, and passes sequentially through first intermediate filler area (212) and each centre below
Packing area (212) and bottom filling area (213), through the heat exchange obtained cold heat transfer media of cooling from the bottom of heat accumulation tank body (201)
Solar energy heat-collection field (100) is returned after portion's outflow；
When first intermediate filler area (212) temperature is increased to setting value, high-temperature heat-transfer medium is switched to from second centre
Packing area (212) enters, pass sequentially through second intermediate filler area (212) and each intermediate filler area (212) below and
Bottom filling area (213), the cold heat transfer media obtained through heat exchange cooling return too after the outflow of the bottom of heat accumulation tank body (201)
Positive energy heat collecting field (100)；
The rest may be inferred, until high-temperature heat-transfer medium switches to an intermediate filler area (212) entrance from bottom, is filled out from bottom
Expect area (213) outflow, and the temperature in bottom filling area (213) is increased to setting value, complete the heat accumulation of heat accumulation tank body (201),
The cold heat transfer media obtained through heat exchange cooling returns to solar energy heat-collection field (100) after the outflow of the bottom of heat accumulation tank body (201).
6. heat transfer heat accumulation detachable solar solar thermal utilization method according to claim 5, it is characterised in that：The heat accumulation
For thermal desorption system (200) when carrying out heat release, the cold heat transfer media from heat energy utilization system (300) is first from heat accumulation tank body
(201) bottom enters, and passes sequentially through bottom filling area (213), each intermediate filler area (212) and top packing area (211), passes through
The high-temperature heat-transfer medium that heat exchange heating obtains enters heat energy utilization system (300) after the outflow of the top of heat accumulation tank body (201)；
When bottom filling area (213) temperature is reduced to setting value, cold heat transfer media is switched to from bottom filling area (213)
First intermediate filler area (212) of side enters, and passes sequentially through each centre of first intermediate filler area (212) and its top
Packing area (212) and top packing area (211), through the heat exchange obtained high-temperature heat-transfer medium of heating from the top of heat accumulation tank body (201)
Enter heat energy utilization system (300) after portion's outflow；
When first intermediate filler area (212) temperature is reduced to setting value, cold heat transfer media is switched to from second centre
Packing area (212) enter, pass sequentially through second intermediate filler area (212) and its top each intermediate filler area (212) and
Top packing area (211), the high-temperature heat-transfer medium obtained through heat exchange heating enter heat after the outflow of the top of heat accumulation tank body (201)
System (300) can be utilized；
The rest may be inferred, until cold heat transfer media switches to an intermediate filler area (212) entrance from the top, is filled out from top
Expect area (211) outflow, and the temperature of top packing area (211) is increased to setting value, complete the heat release of heat accumulation tank body (201),
The high-temperature heat-transfer medium obtained through heat exchange heating enters heat energy utilization system (300) after the outflow of the top of heat accumulation tank body (201).
7. one kind heat transfer heat accumulation detachable solar solar thermal utilization system, including solar energy heat-collection field (100), heat accumulation thermal desorption system
(200), heat energy utilization system (300), the first pressue device (400) and the second pressue device (500), it is characterised in that：
The solar energy heat-collection field (100) include as cold heat transfer media input cold heat transfer media main pipe (101) and
High-temperature heat-transfer medium main pipe (102) as high-temperature heat-transfer medium output end；
The heat accumulation thermal desorption system (200) and heat energy utilization system (300) be arranged in parallel at cold heat transfer media main pipe (101) with
Between high-temperature heat-transfer medium main pipe (102)；
The heat accumulation thermal desorption system (200) includes heat accumulation tank body (201), is situated between in the heat accumulation tank body (201) according to filling energy storage
The position different demarcation of matter is the top packing area (211), more than one intermediate filler area (212) and bottom being sequentially communicated
Portion packing area (213)；Wherein top packing area (211) passes through top switching valve (203) and high-temperature heat-transfer medium main pipe (102) phase
Even, bottom filling area (213) are connected by bottom switching valve (204) with cold heat transfer media main pipe (101), each intermediate filler
Area (212) is connected by corresponding each middle switching valve (202) with middle area connecting tube (207)；
One end of the middle area connecting tube (207) passes through middle area high temperature switching valve (205) and high-temperature heat-transfer medium main pipe
(102) it is connected, the other end of the middle area connecting tube (207) is situated between by middle low temp area switching valve (206) and cryogenic heat transfer
Matter main pipe (101) is connected；
First pressue device (400) be arranged on cold heat transfer media main pipe (101) corresponding to heat accumulation thermal desorption system (200) with
On pipeline section between solar energy heat-collection field (100)；Second pressue device (500) is arranged on cold heat transfer media main pipe
(101) correspond on the pipeline section between heat accumulation thermal desorption system (200) and heat energy utilization system (300).
8. heat transfer heat accumulation detachable solar solar thermal utilization system according to claim 7, it is characterised in that：The sun
Can heat collecting field (100) include some solar thermal collectors (105) in vertically and horizontally array arrangement, in each longitudinal row it is each too
It is positive can heat collector (105) share the thermal-collecting tube (106) of a segmentation series connection insertion, the input of each thermal-collecting tube (106) with it is low
Warm heat transfer medium main pipe (101) is connected, and the output end of each thermal-collecting tube (106) is connected with high-temperature heat-transfer medium main pipe (102)；Phase
Pass through some spaced distribution header (104) lateral direction penetratings between adjacent two thermal-collecting tubes (106).
9. heat transfer heat accumulation detachable solar solar thermal utilization system according to claim 8, it is characterised in that：The thermal-arrest
It is the thermal-collecting tube (106) with inner fin or interior extension fin to manage (106).
10. heat transfer heat accumulation detachable solar solar thermal utilization system according to claim 8, it is characterised in that：Each collection
A pressure-control valve (107) is respectively arranged with heat pipe (106).
11. the heat transfer heat accumulation detachable solar solar thermal utilization system according to any one of claim 7~10, its feature
It is：The heat transfer medium of the solar energy heat-collection field (100) is compressed gas medium, the compressed gas medium include air,
One or more in carbon dioxide, nitrogen, helium, methane, vapor；The circulating pressure of the compressed gas medium is not less than
0.1Mpa。
12. heat transfer heat accumulation detachable solar solar thermal utilization system according to claim 11, it is characterised in that：The biography
Thermal medium is the gas medium for being mixed with solia particle；The solia particle be without phase-change material form without phase transformation particulate, or
To form capsule shell by solid heat conductive material, the phase transformation capsule particulate of capsule filling being made up of phase-change material.
13. the heat transfer heat accumulation detachable solar solar thermal utilization system according to any one of claim 7~10, its feature
It is：The heat transfer medium of the solar energy heat-collection field (100) is liquid heat-transfer medium, and the liquid heat-transfer medium includes heat conduction
One or more in oil, water, ammoniacal liquor.
14. the heat transfer heat accumulation detachable solar solar thermal utilization system according to any one of claim 7~10, its feature
It is：The energy-accumulating medium is high specific heat solid material or phase-change heat-storage material, and it is porous to be deposited in formation in heat-storing device (201)
Structure.
15. heat transfer heat accumulation detachable solar solar thermal utilization system according to claim 14, it is characterised in that：The height
It is the one or more in quartz sand, iron sand, cast iron, iron ore, cobblestone than hot solid materials；The phase-change heat-storage material bag
The phase-change material filler for including the shell of solid heat conductive material composition and being encapsulated in shell.
16. the heat transfer heat accumulation detachable solar solar thermal utilization system according to any one of claim 7~10, its feature
It is：The energy-accumulating medium is liquid phase heat accumulating；The heat transfer medium is by indirect heat exchange mode by thermal energy storage to liquid phase
Heat energy is obtained in heat accumulating or from liquid phase heat accumulating.
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| PCT/CN2018/095550 WO2019011309A1 (en) | 2017-07-14 | 2018-07-13 | Heat-transfer and heat-storage separation method and system for solar photothermal utilization |
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