[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

CN201382600Y - Solar heat superconducting heat collecting device - Google Patents

Solar heat superconducting heat collecting device Download PDF

Info

Publication number
CN201382600Y
CN201382600Y CN200920041099U CN200920041099U CN201382600Y CN 201382600 Y CN201382600 Y CN 201382600Y CN 200920041099 U CN200920041099 U CN 200920041099U CN 200920041099 U CN200920041099 U CN 200920041099U CN 201382600 Y CN201382600 Y CN 201382600Y
Authority
CN
China
Prior art keywords
heat
specials
solar
pipe
many curve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN200920041099U
Other languages
Chinese (zh)
Inventor
李勇强
姜春来
李勇良
李靖
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WUXI YIKAISHUNDE TECHNOLOGY Co Ltd
Original Assignee
WUXI YIKAISHUNDE TECHNOLOGY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by WUXI YIKAISHUNDE TECHNOLOGY Co Ltd filed Critical WUXI YIKAISHUNDE TECHNOLOGY Co Ltd
Priority to CN200920041099U priority Critical patent/CN201382600Y/en
Application granted granted Critical
Publication of CN201382600Y publication Critical patent/CN201382600Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers
    • Y02E10/44Heat exchange systems
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00Climate change mitigation technologies for sector-wide applications
    • Y02P80/20Climate change mitigation technologies for sector-wide applications using renewable energy

Landscapes

  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

The utility model relates to a solar heat superconducting heat collecting device, which belongs to the technical field of solar heat utilization, and is especially suitable for heat collection power generation, heat supply, water supply, drying, heating, industrial heat exchange, etc. The solar heat superconducting heat collecting device comprises a vacuum glass tube or a solar energy vacuum heat collection pipe, a multi-curved-surface special-shaped metal heat exchange pipe, superconductive medium, an evaporator, a frame, an upper casing and a lower casing, wherein the evaporator is provided with a totally closed pressure bearing case body inside which a plurality of multi-curved-surface special-shaped metal heat radiating pipes are mounted, and the lower ends of the multi-curved-surface special-shaped metal heat radiating pipes are fixed at the bottom part of the pressure bearing case body via heat exchange pipe connectors; the multi-curved-surface special-shaped metal heat exchange pipe is communicated with the multi-curved-surface special-shaped metal heat radiating pipes inside the evaporator in a sealing way and is injected with the superconductive medium; the vacuum glass tube or the solar energy vacuum heat collection pipe is sleeved outside the multi-curved-surface special-shaped metal heat exchange pipe; and the frame is mounted between the upper casing and the lower casing for connection.

Description

Solar heat superconducting heat-gathering device
Technical field
The utility model relates to a kind of solar heat superconducting heat-gathering device, belong to the technical field of solar thermal utilization.Be specially adapted to aspects such as heat build-up generating, heating, water supply, oven dry, heating, industrial heat exchange.
Background technology
Along with the energy crisis of the world today, non-renewable resources days such as oil, natural gas, coal are closely exhausted, and energy prices also rise steadily, and have a strong impact on the global economy development, and development and use regenerative resource and solar energy become the focus that the whole world is paid close attention to.At present existing heat build-up (heating) device that utilizes solar energy, but general heat exchange area is little, firing rate slow, easy diffusion, the generation heating load is few, input cost is high, and itself range of application is little.As vacuum heat collection pipe, only as the thermal source of production, domestic water, in the summer of sweltering heat, when solar energy was the most sufficient, the hot water use amount was but less relatively, caused unnecessary heat to be wasted because of the evaporation of moisture.
Summary of the invention
The purpose of this utility model is at above-mentioned weak point, a kind of solar heat superconducting heat-gathering device is provided, and this device comprises glass tube with vacuum or associated fittings such as solar vacuum heat-collecting pipe, many curve specials metallic heat exchanger tube, superconductive medium, evaporimeter, frame and lower casing body.Utilize glass tube with vacuum or solar vacuum heat-collecting pipe, many curve specials metallic heat exchanger tube and superconductive medium to combine, in the negative pressure of vacuum working environment, reach best heat build-up, heat-transfer effect.Utilize glass tube with vacuum or solar vacuum heat-collecting pipe and many curve specials metallic heat exchanger tube to absorb the solar radiant energy that disperses, and by realizing cold and hot exchange, the superconductive medium in the heat transferred pipe, in the lasting heating process of solar energy, the superconductive medium of vaporization is vaporized rapidly to rise and is entered the interior many curve specials metallic heat exchanger tube of evaporimeter after being heated, manage cold and hot exchange through this, make the fluid media (medium) (superconductive medium in the evaporimeter, water or air etc.) be heated vaporization or evaporation, and via the vaporization channel injection, enter cryogenic-fluid energy conversion device, hybrid multi-heat source rapid water heater or superconduction multifunctional heater etc., can improve the utilization rate of solar radiant energy greatly, energy savings.
Solar heat superconducting heat-gathering device is to take following technical scheme to realize: solar heat superconducting heat-gathering device comprises glass tube with vacuum or solar vacuum heat-collecting pipe, many curve specials metallic heat exchanger tube, superconductive medium, evaporimeter, frame, upper shell and lower casing body.
Evaporimeter has totally-enclosed pressure-bearing casing, the heat dissipation metal of curve special more than some pipe is housed in totally-enclosed pressure-bearing casing, the pipe of curve special heat dissipation metal more than some lower end is fixed on totally-enclosed pressure-bearing bottom half by the heat-exchange tube connector, end socket is equipped with in this pipe upper end, in the totally-enclosed pressure-bearing casing fluid media (medium) is housed, described fluid media (medium) can adopt superconductive medium, water or air.Totally-enclosed pressure-bearing casing is provided with vaporization channel interface and medium circulation interface.Totally-enclosed high-pressure tank external body is equipped with upper shell, between upper shell and totally-enclosed pressure-bearing casing heat-insulation layer is housed.
Many curve specials metallic heat exchanger tube upper end is fixed with connector, this connector is tightly connected by the connector of screw or connecting thread and many curve specials metal fever exchange lower end, vacuumizing joint is equipped with in many curve specials metallic heat exchanger tube lower end, many curve specials metallic heat exchanger tube is communicated with many curve specials heat dissipation metal seal of tube in the evaporimeter, vacuumize by vacuumizing joint, vacuum is 0.03-0.1MPa, is filled with superconductive medium.
Glass tube with vacuum or solar vacuum heat-collecting pipe are sleeved on many curve specials metallic heat exchanger tube outside, and by the sealing strip sealing, the solar vacuum heat-collecting pipe lower end is fixed on the spacing pad of lower house.Between upper shell and the lower house frame is housed, upper shell and lower house is connected and fixed by frame.
Described many curve specials metallic heat exchanger tube adopts many curve specials metal heat exchange round tubes, many curve specials metal fever exchange flat pipe or many curve specials metal fever exchange rectangular tube.
Described solar vacuum heat-collecting pipe adopts solar vacuum heat-collecting pipes such as the commercially available Hua Feng of Beijing University, precious light, Hua Yu and bold and unconstrained light,
Described glass tube with vacuum is commercially available double glazing tubular construction, is vacuum between outer tube and interior pipe.
Operation principle: the solar selectively absorbing coating of solar vacuum heat-collecting pipe inwall, the solar radiant energy that disperses is converged on the many curve specials metallic heat exchanger tube outer wall that is arranged in the pipe, the solar selectively absorbing coating of this pipe outer wall absorbs heat rapidly and passes to the interior superconductive medium of pipe, makes it rapid intensification; When the superconductive medium in many curve specials metallic heat exchanger tube reaches certain entry condition, vaporization rapidly, and rise along inside pipe wall, enter the many curve specials metallic heat exchanger tube in the evaporimeter, because there is temperature difference in the inside and outside both sides of many curve specials metallic heat exchanger tube, make the cold and hot exchange of fluid media (medium) (superconductive medium, water or air etc.) that bog and evaporimeter are interior.Evaporimeter inner fluid medium is heated up and vaporization, enter the vaporization passage, spouting, enter cryogenic-fluid energy conversion device, hybrid multi-heat source rapid water heater or superconduction multifunctional heater etc., can improve the utilization rate of solar radiant energy greatly, energy savings.
The technical characterstic of the utility model solar heat superconducting heat-gathering device:
1, many curve specials metallic heat exchanger tube is by advanced technologies moulding such as cold-drawn, hydraulic pressure and extruding, heat exchange area is big, efficient height: use thin-walled (0.35-0.6mm) stainless steel material of Ф 59mm (girth is 185mm) to be example with many curved surfaces metal circular tube, through cold drawing molding 10 identical projectioies being arranged is the special pipe of 9mm, special pipe cylindrical after the shaping is Ф 32mm, centre bore is Ф 16mm, and the pipe girth of same specification Ф 32mm only is 100mm, and promptly the heat exchange area of the utility model heat-exchange tube is 1.8 times of same specification pipe.During with aluminium alloy (6063) extrusion modling, interior have rib to innermost being face or outer centrifugal curved surface forming, make as the many curve specials metallic heat exchanger tube that transmits media, the heat energy that solar vacuum heat-collecting pipe is absorbed is transported to many curve specials metallic heat exchanger tube inside rapidly, improve the heat transfer rate of many curve specials metallic heat exchanger tube inside, and the many curve specials metallic heat exchanger tube in the evaporimeter can make bog and the heat exchange of evaporimeter inner fluid media implementation more fast.
2, the heat transfer rate is fast, efficient is high: be negative pressure (0.03-0.1Pa) state owing to vacuumize in the pipe of back, make the superconductive medium boiling point that itself just has the cold-starting characteristic reduce, reach impayable heat exchange effect.In continuing heating process, heat energy constantly distributes, can reach temperature required rapidly and make each limb fall with evaporimeter in liquid realize heat exchange, and distance, ability that superconductive medium transmits are strong, heat medium speed is fast.
3, glass tube with vacuum does not directly contact with medium (water, superconductive medium etc.) with solar vacuum heat-collecting pipe, reduces the bombing odds.Many curved surfaces metal tube outer surface scribbles coating for selective absorption, is initiatively conduction-type heat absorption by original passive closing-sunning type endothermic transition, has greatly improved heat exchanger effectiveness, and has improved the non-oxidizability of metal tube, has prolonged service life.
4, according to " analysis of unlike material (copper pipe or stainless steel tube) heat exchanger heat transfer characteristic " record, have under the condition of identical heat exchange area at copper pipe or stainless steel tube, when adopting thin stainless steel tube, the thermal conduction resistance of stainless steel tube will reduce greatly, thermal conductivity factor increases, and heat exchange efficiency improves.
5, cost of investment is moderate, and applied range, easily universal: the high-temperature evaporation gas of generation is mainly used in generating, also can be widely used in aspects such as refrigeration, heating, heat supply water and vapours, oven dry, heating, industrial heat exchange.Response country calls, and meets the building energy conservation requirement of local government, splendid application space is arranged, small investment, return rate height aspect architecture-integral.
6, many curve specials metallic heat exchanger tube suction/heat-radiating integrated: the radiant energy that this pipe converges solar vacuum heat-collecting pipe passes to superconductive medium in the pipe, the vaporization that makes it to heat up is risen along tube wall, simultaneously, the gas after the vaporization is by many curve specials metallic heat exchanger tube and its internal flow media implementation heat exchange in the evaporimeter.Accumulated Heat Units adopts integrated mode directly to link to each other with vapourizing unit is same.Behind the apparatus integration, reduce the energy loss in the transmittance process, improve the utilization rate of solar radiant energy, overall structure takes up room little, the economical with materials cost.
7, the heat-exchange tube of the length of many curve specials metal fever exchange pipe in the evaporimeter promptly absorbs heat greater than heat radiation the sufficient quick heating of thermal source.
8, overall structure is simple, good seal performance, and bearing capacity is strong, and easy for installation, easy-maintaining, long service life, freezing tolerance are strong.
9, the utility model utilizes the high-temperature evaporation gas that solar energy produces, and with this as power, enter " energy conversion device ", under the effect of impulsive force, be converted to rotating mechanical energy and directly drive other machinery or be used for generating.Moreover, also can be widely used in aspects such as heating, water supply, oven dry, heating, industrial heat exchange.
Description of drawings
The utility model is described in further detail below with reference to accompanying drawing.
Fig. 1 is the solar heat superconducting heat-gathering device front view.
Fig. 2 is the vertical view (A-A partly cuts open) of solar heat superconducting heat-gathering device.
Fig. 3 is the B-B partial enlarged drawing of solar heat superconducting heat-gathering device.
The specific embodiment
With reference to accompanying drawing 1~3, solar heat superconducting heat-gathering device comprises solar vacuum heat-collecting pipe 14, many curve specials metallic heat exchanger tube 8, superconductive medium 10, evaporimeter, frame 9, goes up shell body 1 and lower casing body 13.
Evaporimeter has totally-enclosed pressure-bearing casing 4, the heat dissipation metal of curve special more than some pipe 5 is housed in totally-enclosed pressure-bearing casing 4, the pipe of curve special heat dissipation metal more than some 5 lower ends are fixed on totally-enclosed pressure-bearing casing 4 bottoms by heat-exchange tube connector 15, end socket is equipped with in this pipe upper end, in the totally-enclosed pressure-bearing casing 4 fluid media (medium) 6 is housed, said fluid media (medium) 6 can adopt superconductive medium, water or air.Totally-enclosed pressure-bearing casing 4 is provided with vaporization channel interface 2 and medium circulation interface 7.Upper shell 1 is equipped with in totally-enclosed pressure-bearing casing 4 outsides, between upper shell 1 and totally-enclosed pressure-bearing casing 4 heat-insulation layer 3 is housed.
Many curve specials metallic heat exchanger tube 8 upper ends are fixed with connector 16, this connector is tightly connected by the connector of screw or connecting thread and many curve specials heat dissipation metal pipe 5 lower ends, vacuumizing joint 11 is equipped with in many curve specials metallic heat exchanger tube 8 lower ends, many curve specials metallic heat exchanger tube 8 is communicated with many curve specials heat dissipation metal pipe 5 sealings in the evaporimeter, vacuumize by vacuumizing joint 11, vacuum is 0.03-0.1MPa, is filled with superconductive medium 10.
Glass tube with vacuum or solar vacuum heat-collecting pipe 14 are sleeved on many curve specials metallic heat exchanger tube 8 outsides, and by sealing strip 17 sealings, glass tube with vacuum or solar vacuum heat-collecting pipe 14 lower ends are fixed on the spacing pad 12 of lower house 13.Between upper shell 1 and the lower house 13 frame 9 is housed, upper shell 1 and lower house 13 is connected and fixed by frame 9.
Described many curve specials metallic heat exchanger tube 8 adopts many curve specials metal heat exchange round tubes, many curve specials metal fever exchange flat pipe is flat or many curve specials metal fever exchange rectangular tube.
Described many curve specials heat dissipation metal pipe 5 adopts many curve specials metal heat exchange round tubes, many curve specials metal fever exchange flat pipe is flat or many curve specials metal fever exchange rectangular tube.
Described solar vacuum heat-collecting pipe 14 adopts solar vacuum heat-collecting pipes such as the commercially available Hua Feng of Beijing University, precious light, Hua Yu and bold and unconstrained light, and generally the specification of Cai Yonging has Ф 47mm (internal diameter Ф 37mm), Ф 58mmm (internal diameter Ф 47mm), Ф 70mm (internal diameter Ф 58mm).Described glass tube with vacuum 14 adopts commercially available double glazing tubular construction, is vacuum between outer tube and interior pipe.
Described many curve specials metallic heat exchanger tube 8 outer walls are coated with solar energy and select absorber coatings, it adopts advanced production technology, solar energy in the spraying of pipe outer wall is selected absorber coatings, can be that thermal energy storage is in pipe rapidly with transform light energy, wherein solar selectively absorbing coating can adopt the Solar Energy Inst., Beijing to produce black chromium and select coating, coating absorptivity δ 〉=0.93, infrared emittance ε≤0.10 effectively raises its heat build-up efficient.Main thin-wall stainless steel or the aluminium alloy of adopting utilizes cold drawn or extrusion forming technology as raw material, makes that the heat exchange area of the many curve specials metallic heat exchanger tube 8 after the moulding is about 1.8 times of the common light-wall pipe of same specification.What be worth emphasizing is can form rib in this pipe on innermost being face or outer centrifugal curved surface, and points to pipe center or rightabout.This pipe is coated with coating for selective absorption equally through anti-oxidant treatment and at outer wall.
The conductive fluid that described superconductive medium 10 adopts commercially available 2-2 superconductive medium (Weifang City, Shandong China rich new product research institute produces), low temperature conduction oil and can vaporize when 35 ℃ to 50 ℃ left and right sides of low temperature, under negative pressure condition, start-up temperature is lower.Under the lasting heated condition of solar energy, heat energy constantly distributes, and makes superconductive medium absorb heat rapidly to heat up to move upward vaporization and boiling along inside pipe wall, and speed is more than tens of times of water.

Claims (5)

1, a kind of solar heat superconducting heat-gathering device is characterized in that comprising glass tube with vacuum or solar vacuum heat-collecting pipe, many curve specials metallic heat exchanger tube, superconductive medium, evaporimeter, frame, upper shell and lower casing body;
Evaporimeter has totally-enclosed pressure-bearing casing, the heat dissipation metal of curve special more than some pipe is housed in totally-enclosed pressure-bearing casing, the pipe of curve special heat dissipation metal more than some lower end is fixed on totally-enclosed pressure-bearing bottom half by the heat-exchange tube connector, end socket is equipped with in this pipe upper end, in the totally-enclosed pressure-bearing casing fluid media (medium) is housed, the totally-enclosed pressure-bearing casing of radiating tube is provided with vaporization channel interface and medium circulation interface, and totally-enclosed high-pressure tank external body is equipped with upper shell;
Many curve specials metallic heat exchanger tube upper end is fixed with connector, this connector is tightly connected by the connector of screw or connecting thread and many curve specials metal fever exchange lower end, vacuumizing joint is equipped with in many curve specials metallic heat exchanger tube lower end, many curve specials metallic heat exchanger tube is communicated with many curve specials heat dissipation metal seal of tube in the evaporimeter, vacuumize by vacuumizing joint, be filled with superconductive medium;
Glass tube with vacuum or solar vacuum heat-collecting pipe are sleeved on many curve specials metallic heat exchanger tube outside, and seal by sealing strip, glass tube with vacuum or solar vacuum heat-collecting pipe lower end are fixed on the spacing pad of lower house, between upper shell and the lower house frame is housed, upper shell and lower house is connected and fixed by frame.
2, solar heat superconducting heat-gathering device according to claim 1 is characterized in that described fluid media (medium) adopts superconductive medium, water or air.
3, solar heat superconducting heat-gathering device according to claim 1 is characterized in that between upper shell and totally-enclosed pressure-bearing casing heat-insulation layer being housed.
4, solar heat superconducting heat-gathering device according to claim 1 is characterized in that described many curve specials metallic heat exchanger tube adopts many curve specials metal heat exchange round tubes, many curve specials metal fever exchange flat pipe or many curve specials metal fever exchange rectangular tube.
5, solar heat superconducting heat-gathering device according to claim 1 is characterized in that described many curve specials metallic heat exchanger tube outer wall is coated with solar energy and selects absorber coatings.
CN200920041099U 2009-04-10 2009-04-10 Solar heat superconducting heat collecting device Expired - Fee Related CN201382600Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200920041099U CN201382600Y (en) 2009-04-10 2009-04-10 Solar heat superconducting heat collecting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200920041099U CN201382600Y (en) 2009-04-10 2009-04-10 Solar heat superconducting heat collecting device

Publications (1)

Publication Number Publication Date
CN201382600Y true CN201382600Y (en) 2010-01-13

Family

ID=41526073

Family Applications (1)

Application Number Title Priority Date Filing Date
CN200920041099U Expired - Fee Related CN201382600Y (en) 2009-04-10 2009-04-10 Solar heat superconducting heat collecting device

Country Status (1)

Country Link
CN (1) CN201382600Y (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101581504B (en) * 2009-04-10 2010-09-01 无锡意凯顺得科技有限公司 Solar heat superconducting heat-gathering device
CN101858310A (en) * 2010-04-15 2010-10-13 刘君才 Hot wind power generation system employing superconductive tube

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101581504B (en) * 2009-04-10 2010-09-01 无锡意凯顺得科技有限公司 Solar heat superconducting heat-gathering device
CN101858310A (en) * 2010-04-15 2010-10-13 刘君才 Hot wind power generation system employing superconductive tube

Similar Documents

Publication Publication Date Title
CN103986414B (en) A kind of photovoltaic and photothermal building integration system
CN103697603B (en) Solar high-efficiency dual temperature phase-change collector and phase-change material for collector
CN201672716U (en) Heat collection and heating integrated solar heat utilization device
CN101581504B (en) Solar heat superconducting heat-gathering device
CN201363922Y (en) Heat tube tank type solar collector
CN106885381A (en) A kind of solar energy hot hold over system
CN103216955A (en) Energy-storage solar heat collector
CN101408353A (en) Hot pipe type solar heat collector
CN201779886U (en) Solar heat-collecting unit structure
CN201382600Y (en) Solar heat superconducting heat collecting device
CN101387451B (en) Closed-loop capillary pipe plate type solar heat collector
CN110108044A (en) A kind of compound heat collector of photovoltaic and photothermal solar
CN201417034Y (en) Solar energy collector
CN202254392U (en) Vacuum pipe solar thermal collector with thermal storage function
CN201191092Y (en) Split type and flat plate type solar energy water-heater
CN204084880U (en) A kind of heat-tube vacuum cast solar heat collector
CN200975790Y (en) Oil filling type solar high-temperature heat collectors
CN101387447B (en) Graphite-filled vacuum glass tube closed-loop capillary pipe solar thermal-collecting tube
CN1995867A (en) Integrated thin-wall heat pipe type vacuum pipe heat-collector and adsorption bed refrigeration system
CN211625735U (en) Flat-plate solar water heating system
CN101093110B (en) Parallel type aluminum made solar energy collector with fins
CN102032684A (en) Tube-in-tube type double-cavity solar energy connector
CN201229074Y (en) Plate type solar heat-collector and water heater comprising the heat collector
CN202013029U (en) Heat transfer device for heat pipe type solar heat collector
CN2901113Y (en) Finned tubular type oil tube electric heater

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100113

Termination date: 20110410