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NL2012949B1 - Heat collector. - Google Patents

Heat collector. Download PDF

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Publication number
NL2012949B1
NL2012949B1 NL2012949A NL2012949A NL2012949B1 NL 2012949 B1 NL2012949 B1 NL 2012949B1 NL 2012949 A NL2012949 A NL 2012949A NL 2012949 A NL2012949 A NL 2012949A NL 2012949 B1 NL2012949 B1 NL 2012949B1
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NL
Netherlands
Prior art keywords
heat
transfer fluid
tube
heat transfer
heat collector
Prior art date
Application number
NL2012949A
Other languages
Dutch (nl)
Inventor
Reijer Gouw Marcel
Bin Lei Hai
Original Assignee
Global-E-Systems Europa B V
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Priority to NL2012949A priority Critical patent/NL2012949B1/en
Application granted granted Critical
Publication of NL2012949B1 publication Critical patent/NL2012949B1/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S10/00Solar heat collectors using working fluids
    • F24S10/40Solar heat collectors using working fluids in absorbing elements surrounded by transparent enclosures, e.g. evacuated solar collectors
    • F24S10/45Solar heat collectors using working fluids in absorbing elements surrounded by transparent enclosures, e.g. evacuated solar collectors the enclosure being cylindrical
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00Domestic hot-water supply systems
    • F24D17/0015Domestic hot-water supply systems using solar energy
    • F24D17/0021Domestic hot-water supply systems using solar energy with accumulation of the heated water
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S60/00Arrangements for storing heat collected by solar heat collectors
    • F24S60/10Arrangements for storing heat collected by solar heat collectors using latent heat
    • 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

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)

Abstract

The present invention relates to a heat collector for capturing solar energy comprising an evacuated tube comprising an outer glass tube and an inner glass tube wherein each glass tube is made of borosilicate glass, a thermal storage material enclosed by the evacuated tube for storing thermal solar energy, and a heat-transfer fluid system enclosed by and/or embedded in the thermal storage material comprising at least one inlet means to feed a heat-transfer fluid to the heat collector and at least one outlet means to discharge the heat-transfer fluid from the heat collector, wherein the thermal storage material comprises a phase change material. The present invention further relates to device comprising the heat collector of the present invention and a system comprising the device.

Description

Heat collector
The present invention relates to an heat collector for capturing solar energy and a device comprising the evacuated tube collector of the present invention. The present invention further relates to a system comprising the device of the present invention.
Renewable energy, e.g. energy from resources which are naturally replenished on a human timescale such as sunlight, wind, rain, tides, waves and geothermal heat, has the potential to play an important role in an efficient way to achieve sustainable development. In particular, solar energy, i.e. radiant light and heat from the sun, is harnessed using a range of ever-evolving technologies such as solar heating, solar photovoltaic, solar thermal electricity, solar cooling, solar architecture and artificial photosynthesis. Solar technologies are broadly characterized as either passive solar or active solar depending on the way they capture, convert and distribute solar energy. Active solar techniques include the use of photovoltaic panels and solar thermal collectors to harness the energy. Passive solar techniques include orienting a building to the Sun, selecting materials with favourable thermal mass or light dispersing properties, and designing spaces that naturally circulate air.
The present invention relates to the field of active solar technologies, in particular solar thermal collectors. A solar thermal collector collects heat by absorbing sunlight. Nowadays, flat-plate and evacuated-tube solar collectors are used to collect heat for space heating, domestic hot water or cooling with an absorption chiller. Currently used solar thermal collectors need large storage tanks to store the collected thermal heat energy in order to ensure that sufficient heat energy is supplied once the supply of the collected heat energy is required.
It is an object of the present invention to simplify the construction of a system comprising a solar thermal collector. It is another object of the present invention to increase the heat energy transfer efficiency of the solar thermal collectors, presently known.
The invention provides hereto a heat collector for capturing solar energy comprising an evacuated tube comprising an outer glass tube and an inner glass tube wherein each glass tube is made of borosilicate glass, a thermal storage material enclosed by the evacuated tube for storing thermal solar energy, and a heat-transfer fluid system enclosed by and/or embedded in the thermal storage material comprising at least one inlet means to feed a heat-transfer fluid to the heat collector and at least one outlet means to discharge the heat-transfer fluid from the heat collector. It was found that by providing a heat collector as described above wherein the thermal storage material comprises a phase change material, the efficiency of the transfer of heat energy stored by the heat collector of the present invention is improved. Even further, the use of a storage tank for storage of the thermally heated heat-transfer fluid is no longer required. As a consequence, by providing a thermal storage material comprising a phase change material, the heat collector of the present invention captures and stores the heat energy collected from the Sun. The collected heat energy is only released from the heat collector once the system requires the supply of heat energy.
It is noted that the phase change material, also referred to as ‘PCM’, is a substance with a high heat of fusion which, by melting and solidifying at a certain temperature, is capable of storing and releasing large amounts of energy. Heat is absorbed or released when the material changes from solid to liquid and vice versa. Any phase change material may be used in the heat collector of the present invention. Preferably, the phase change material is a high temperature phase change material, i.e. a phase change material having a phase change temperature, i.e. melting point, of about 100°C or higher. Suitable phase change materials may be selected from high temperature salt hydrates and/or paraffin wax. In particular advantageous phase change materials may be selected from non-toxic high temperature phase change materials. Non-toxic high temperature phase change materials may be edible phase change materials having a phase change temperature of about 100°C or higher. For example, such an edible phase change material may be a food additive, such as erythritol, xylitol and/or sorbitol.
The evacuated tube of the present invention is of the type commonly used in evacuated-tube solar collectors comprising two concentric glass tubes, i.e. an outer glass tube and an inner glass tube, wherein the space between the outer glass tube and inner glass tube comprises an under pressure, e.g. a vacuum. The evacuated tube is preferably U-shaped and is arranged to enclose further components, e.g. the thermal storage material and heat-transfer fluid system according to the present invention. In an embodiment of the present invention, the inner and/or outer surface of the inner glass tube is coated with a spectrally selective coating. By providing an evacuated tube wherein the inner glass tube is coated with a spectrally selective coating, to enables the use of the whole solar energy spectrum to generate heat. Suitable spectrally selective coatings are, for example, described in US Patents 6,632,542 and 6,783,653. However, many other spectrally selective coatings known in the art may be used as well.
The heat-transfer fluid may be selected from heat-transfer fluids known in the art, such as water optionally in combination with additives like corrosion inhibitors, e.g. benzotriazole, and antifreeze, e.g. ethylene glycol, di-ethylene glycol or propylene glycol. However, other suitable heat-transfer fluids such as oil, e.g. mineral oil, silicone oil, transformer oil, may be used as well. In an embodiment of the present invention, the heat-transfer fluid is water. The use of water as a heat-transfer fluid is particularly advantageous for use of the heat collector in a heat system which heat system is in open connection with a water supply system, such as the public water supply system. By providing a heat collector comprising a heat-transfer fluid system wherein the inlet means and outlet means are directly connected to the public water supply system, drinking water may be directly supplied to the heat collector in order to heat the drinking water.
In an embodiment, the evacuated tube may be filled with a liquid thermal storage material comprising a phase change material in which the heat-transfer fluid system is inserted, i.e. the heat-transfer fluid system being embedded in the thermal storage material comprising a phase change material. In a further embodiment of the present invention, the evacuated tube encloses a casing comprising the thermal storage material and wherein the casing is preferably made of copper and/or aluminium. By providing a casing comprising the thermal storage material, the thermal storage material comprising the phase change material can be easily inserted in the evacuated tube. Therefore, providing a less complex method of assembling the heat collector of the present invention compared to filling the evacuated tube with liquid thermal storage material. It is further noted that an additional closure means, e.g. a cap or the like, may be used to prevent leakage of thermal storage material from the filled evacuated tube or casing material.
In another embodiment of the present invention, the thermal storage material is enclosed between an outer wall and an inner wall of a double-walled envelope, wherein the double-walled envelope is preferably made of copper and/or aluminium. By providing a double-walled envelope where the thermal storage material is contained in, an even further advantage is provided in the construction of the heat collector of the present invention. By providing a double-walled thermal storage material comprising envelope the different parts of the heat collector, i.e. the evacuated tube, the thermal storage material and the heat-transfer fluid system, can be manufactured separately before assembling the heat collector. Even further, by providing a double-walled thermal storage material comprising envelope the heat-transfer fluid system is enclosed by, i.e. no longer embedded in, the thermal storage material comprising the phase change material, consequently simplifying the design of the heat-transfer fluid system.
Both the above-mentioned casing and double-walled envelope are preferably made of copper and/or aluminium. It was found that by providing a casing or double-walled envelope made of copper and/or aluminium a strong and high temperature, i.e. 100°C or higher, resistant casing or double-walled envelope can be constructed.
As already mentioned above, the design of the heat-transfer fluid system may depend on the construction of the thermal storage material comprising the phase change material.
In case the heat-transfer fluid system is embedded in the thermal storage material it is preferred that the heat-transfer fluid system comprises a heat-transfer fluid tube extending in the longitudinal direction of the evacuated tube comprising at least one first tube end connected to the at least one inlet means and at least one second tube end connected to the at least one outlet means. Preferably, the heat-transfer fluid tube may have a U-shaped form, however, other forms, e.g. W-shaped, M-shaped or Y-shaped forms, may be suitable as well.
It is noted that the flow direction of the heat-transfer fluid is preferably W-shaped, i.e. the inflow of cold heat-transfer fluid via the central longitudinal axis of the heat collector wherein the outflow of heated heat-transfer fluid is arranged in between the inflow of cold heat-transfer fluid and the inner surface of the thermal storage material comprising component.
In case the heat collector of the present invention comprises a double-walled thermal storage material comprising envelope another design of the heat-transfer fluid system is possible. In such case the heat-transfer fluid system comprises a heat-transfer fluid tube extending in the longitudinal direction of the evacuated tube comprising at least one first tube end connected to the at least one inlet means and at least one second tube end located at a distance opposite to the at least one first tube end, wherein the second tube end being an open end to discharge the heat-transfer fluid from the heat-transfer fluid tube. Such construction is a further simplification of the heat-transfer fluid system having a U-shaped form. In such an embodiment it is preferred that the heat-transfer fluid discharged from the heat-transfer fluid tube is in direct contact with the inner wall of the double-walled envelope to provide the most efficient heat energy transfer between the thermal storage material comprising phase change material and the heat-transfer fluid.
In yet another embodiment it is preferred the heat-transfer fluid discharged from the heat-transfer fluid tube is at some distance of the inner wall of the double-walled envelope to avoid leakage of thermal storage material into the heat-transfer fluid. In this particular embodiment, the heat-transfer fluid tube extending in the longitudinal direction of the evacuated tube is enclosed by a tube housing, which tube housing is connected to the outlet means.
Because the heat-transfer fluid system needs to withstand high temperatures, i.e. 100°C or higher, the heat-transfer fluid tube comprised in the heat-transfer fluid system is preferably made of copper and/or a heat resistant synthetic material, such as heat resistant plastic.
In a particular preferred embodiment of the present invention, the phase change material is selected from a non-toxic high temperature phase change material, preferably a food additive such as erythritol, xylitol and/or sorbitol. In case the water supply system is in open connection with, i.e. directly coupled to, the heat-transfer fluid system of the heat collector of the present invention, case should be taken in selecting the phase change material comprised in the thermal storage material. By providing a non-toxic high temperature phase change material, any leakage, although not expected, of the phase change material into the heat-transfer fluid, i.e. drinking water, will not harm the end- user. Even further, by providing a food additive such as erythritol, xylitol and/or sorbitol the end-user may be able to detect any undesirable leakage of phase change material into the heat-transfer fluid and may take necessary action to prevent the leakage of phase change material.
In another aspect, the present invention provides a device comprising one or more heat collectors as described above and at least one manifold, also commonly named header, wherein the manifold comprises at least one supply means to feed a heat-transfer fluid to the manifold, at least one discharge means to discharge the heat-transfer fluid from the manifold, and one or more connectors to connect the one or more heat collectors with the manifold, wherein the at least one supply means is connected to at least one of the at least one inlet means of the one or more heat collectors and the at least one discharge means is connected to at least one of the at least one outlet means of the one or more heat collectors. It was found that the device according to the present invention is able to capture and store solar energy without the need of an additional storage tank to store the captured solar energy.
In an embodiment of the present invention, the manifold further comprises an insulating layer enclosing the at least one supply means and the at least one discharge means to prevent loss of heat energy transferred to the heat-transfer fluid.
In order to increase the heat-transfer flow capacity and the heat energy storage capacity of the device of the present invention, the device may comprise two or more heat collectors coupled in parallel wherein each of the at least one inlet means of the heat collectors are connected to the at least one supply means of the manifold and each of the at least one outlet means of the heat collectors are connected to the at least one discharge means of the manifold.
In a further embodiment of the present invention, the device further comprises an insulated heat-transfer fluid storage container, e.g. storage tank, connected to the at least one discharge means of the manifold for storing thermal energy. By providing a heat-transfer fluid storage container, the heat energy storage capacity of the device of the present invention is increased even further.
In a further aspect, the present invention provides a system comprising the device as described above, wherein the heat-transfer fluid is water and wherein the heat-transfer fluid system is in open communication with the water supply system, such as the public water supply system, e.g. a cold and hot water supply system. As already mentioned above, the heat collectors of the present invention may be connected directly to the public water supply system such that the drinking water is allowed to flow through the heat collector. By providing a heat collector comprising a thermal storage material comprising a phase change material, there is no need to supply drinking water to the system without immediately using the heated drinking water. Since the heat energy is stored in the thermal storage material instead of a heat-fluid storage tank, the growth of bacteria in the heat-fluid, e.g. drinking water, is prevented. The drinking water is supplied to the heat collector only in case heated drinking water is needed.
The present invention will be further elucidated on the basis of the non-limitative exemplary embodiments shown in the following figures. Herein: figure 1 shows a schematic view of the device comprising the heat collector according to the invention; figure 2A-B shows a detailed schematic view of a part of the construction of the heat collector according to the invention comprising an heat-transfer fluid system enclosed by the thermal storage material; and figure 3A-B shows a schematic view of a system wherein the heat collector according to the invention is used.
Figure 1 shows a schematic view of the device 1, comprising a plurality of heat collectors 20 according to the present invention. The evacuated tube 21, as well as the thermal storage material 22 and the inlet tube 23 are displayed as well. Figure 3 further pictures the manifold 10 comprising an feed means 11 and a discharge means 12 for, respectively, supplying and discharging heat-transfer fluid from the device 1 (indicated by the arrows Pi and P2). The feed means 11 is connected to the inlet tubes 23 comprised in the multiple heat collectors 20. The manifold 10 is insulated with a heat insulating material 13. Figure 1 indicates area 2 which area is described in more detail in figure 2A-B.
Figure 2A shows a detailed schematic view of the heat collector 20 comprising a heat-transfer fluid system construction comprising an inlet tube 23 which extends in the longitudinal direction of the evacuated tube (not shown) having a first opening 23a and a second opening 23b. The first opening 23 a is connected to heat-transfer fluid inlet means (not shown). The second opening 23b discharges the heat-transfer fluid into the space 24 located between the inlet tube 23 and the inner wall 25 of the double-walled envelop 26 comprising the thermal storage material 22 comprising the phase change material. The inlet tube 23 and inner wall 25 are concentric to one another to optimise the contact between the heat-transfer fluid, e.g. water discharged from the inlet tube 23, and the inner wall 25. It is further noted that the double-walled envelop 26 further comprises an outer wall 27 to prevent leakage of the thermal storage material 22.
Once the double-walled envelop 26 is filled with thermal storage material 22, the double-walled envelop 26 is closed by closure 28, such as a copper ring and gasket construction or the like. Further resilient rings (not shown) may be used, e.g. silicone rubber or Teflon rings, to provide an hermitic closure of the double-walled envelop 26. The closure 28 further comprises connecting means 29, such as a screw type fastener, to further connect the closure 28 to a ring 30. The connecting means 29 are preferably resilient in order to allow small volume changes of the thermal storage material 22 contained in the double-walled envelop 26 in case the phase change material comprised in the thermal storage material 22 changes from the liquid phase to the solid phase and vice versa. The inner wall 25 of the double-walled envelop 26 preferably projects out of the pictured assembly. The inner wall 25 may further comprise connecting means 31 to connect the outlet 32 of heated heat-transfer fluid, e.g. water, to the discharge means of a manifold (not shown).
Figure 2B shows a schematic view of a similar assembly 20 as pictured in figure 1, wherein the assembly 20 is enclosed by an evacuated tube 21 forming the heat collector 30 of the present invention. The evacuated tube 21 comprises an outer glass tube 33 and an inner glass tube 34 enclosing an evacuated space 35. The outer glass tube 33 and the inner glass tube 34 are concentric to one another. The inner glass tube 34 is coated with a spectrally selective coating 36. Even further, the assembly 20 is concentric to the evacuated tube 21 as well. For the sake of completeness, the different components of the assembly 20, corresponding to the components as described for figure 1 has been numbered in accordance with the numbering used in figure 1.
Figure 3A pictures a schematic view of a system 50 comprising the device 1 wherein the discharge means of the device 1 located in the header 10 is connected to a heater 51, e.g. gas or electric heater, which heater 51 is further connected to a three-way control valve 52 which is able to control the temperature of the water, i.e. in the range of 30°C to 60°C, connected to the hot water supply system of a household 53. Furthermore, the three-way control valve 52 is connected to the cold water supply system 55. The feed means of heat-transfer fluid, e.g. water, to the device 1 may be connected via overflow safety valve 54 with the cold water supply system 55 as well.
Figure 3B pictures a schematic view of a system 60, similar to the system as described in figure 3A comprising the device 1, heater 61, three-way control valve 62, hot water supply system 63, cold water supply system 65 and overflow safety valve 64. System 60 differs from system 50 in that an accumulation tank 66 is installed which disconnects the heat-transfer fluid used in the device 1 from the water used in the hot water supply system 63 and cold water supply system 65. The accumulation tank 66 is provided with an inlet and outlet for supplying and discharging water used in the hot water supply system 63 and the cold water supply system 65. The water supplied to the tank 66 is heated by the heat-transfer fluid, which heat transfer fluid is heated in device 1. The closed system of heat-transfer fluid further comprises a temperature control system 67, pressure safety valve 68, circulating pump 69 and an expansion vessel 70.

Claims (14)

1. Warmtecollector voor het opvangen van zonne-energie, omvattende: een vacuüm-gepompte buis omvattende een buitenste glasbuis en een binnenste glasbuis waarbij elke glasbuis van borosilicaatglas is gemaakt; een door de vacuüm-gepompte buis omsloten materiaal voor thermische opslag voor het opslaan van thermische zonne-energie; en een warmteoverdrachtsfluïdumsysteem dat is omsloten door en/of ingebed in het materiaal voor thermische opslag, omvattende ten minste één inlaatmiddel om een warmteoverdrachtsfluïdum naar de warmtecollector toe te voeren en ten minste één uitlaatmiddel om het warmteoverdrachtsfluïdum uit de warmtecollector af te voeren, met het kenmerk dat het materiaal voor thermische opslag een faseveranderingsmateriaal omvat.A heat collector for collecting solar energy, comprising: a vacuum-pumped tube comprising an outer glass tube and an inner glass tube wherein each glass tube is made of borosilicate glass; a thermal storage material enclosed by the vacuum-pumped tube for storing solar thermal energy; and a heat transfer fluid system enclosed by and / or embedded in the thermal storage material, comprising at least one inlet means for supplying a heat transfer fluid to the heat collector and at least one outlet means for discharging the heat transfer fluid from the heat collector, characterized that the thermal storage material comprises a phase change material. 2. Warmtecollector volgens conclusie 1, met het kenmerk dat het binnenste en/of buitenste oppervlak van de binnenste glasbuis is bedekt met een spectraal selectieve deklaag.A heat collector according to claim 1, characterized in that the inner and / or outer surface of the inner glass tube is covered with a spectrally selective coating. 3. Warmtecollector volgens conclusie 1 of 2, met het kenmerk dat het warmteoverdrachtfluïdum water is.A heat collector according to claim 1 or 2, characterized in that the heat transfer fluid is water. 4. Warmtecollector volgens één van de voorgaande conclusies, met het kenmerk dat de vacuüm-gepompte buis een behuizing omsluit dat het materiaal voor thermische opslag omvat en waarbij de behuizing bij voorkeur van koper en/of aluminium is gemaakt.A heat collector according to any one of the preceding claims, characterized in that the vacuum-pumped tube encloses a housing comprising the material for thermal storage and wherein the housing is preferably made of copper and / or aluminum. 5. Warmtecollector volgens één van de voorgaande conclusies, met het kenmerk dat het materiaal voor thermische opslag is omsloten tussen een buitenste wand en een binnenste wand van een dubbelwandige omhulling, waarbij de dubbelwandige omhulling bij voorkeur van koper en/of aluminium is gemaakt.A heat collector according to any one of the preceding claims, characterized in that the material for thermal storage is enclosed between an outer wall and an inner wall of a double-walled casing, the double-walled casing preferably being made of copper and / or aluminum. 6. Warmtecollector volgens één van de voorgaande conclusies, met het kenmerk dat het warmteoverdrachtsfluïdumsysteem een warmteoverdrachtsfluïdumbuis omvat die zich in de lengterichting van de vacuüm-gepompte buis uitstrekt, omvattende ten minste één met het ten minste ene inlaatmiddel verbonden eerste buisuiteinde en ten minste één met het ten minste ene uitlaatmiddel verbonden tweede buisuiteinde.A heat collector according to any one of the preceding claims, characterized in that the heat transfer fluid system comprises a heat transfer fluid tube extending in the longitudinal direction of the vacuum-pumped tube, comprising at least one first tube end connected to the at least one inlet means and at least one with second tube end connected to the at least one outlet means. 7. Warmtecollector volgens conclusie 5, met het kenmerk dat het warmteoverdrachtsfluïdumsysteem een warmteoverdrachtsfluïdumbuis omvat die zich in de lengterichting van de vacuüm-gepompte buis uitstrekt, omvattende ten minste één met het ten minste ene inlaatmiddel verbonden eerste buisuiteinde en ten minste één op een afstand tegenover het ten minste ene eerste buisuiteinde gelegen tweede buisuiteinde, waarbij het tweede buisuiteinde een open uiteinde is om het warmteoverdrachtsfluïdum uit de warmteoverdrachtsfluïdumbuis af te voeren.A heat collector according to claim 5, characterized in that the heat transfer fluid system comprises a heat transfer fluid tube extending in the longitudinal direction of the vacuum-pumped tube, comprising at least one first tube end connected to the at least one inlet means and at least one spaced opposite the second tube end located at least one first tube end, the second tube end being an open end for discharging the heat transfer fluid from the heat transfer fluid tube. 8. Warmtecollector volgens conclusie 7, met het kenmerk dat het uit de warmteoverdrachtsfluïdumbuis afgevoerde warmteoverdrachtsfluïdum in direct contact verkeert met de binnenste wand van de dubbelwandige omhulling.A heat collector according to claim 7, characterized in that the heat transfer fluid discharged from the heat transfer fluid tube is in direct contact with the inner wall of the double-walled enclosure. 9. Warmtecollector volgens één van de conclusies 6 tot en met 8, met het kenmerk dat de warmteoverdrachtsfluïdumbuis is gemaakt van koper en/of een warmteresistent synthetisch materiaal, zoals warmteresistente kunststof.A heat collector according to any one of claims 6 to 8, characterized in that the heat transfer fluid tube is made of copper and / or a heat-resistant synthetic material, such as heat-resistant plastic. 10. Warmtecollector volgens één van de voorgaande conclusies, met het kenmerk dat het faseveranderingsmateriaal is gekozen uit een niet-toxisch hoge-temperatuur-faseveranderingsmateriaal, bij voorkeur een voedingssupplement zoals erythritol.A heat collector according to any one of the preceding claims, characterized in that the phase change material is selected from a non-toxic high-temperature phase change material, preferably a food supplement such as erythritol. 11. Inrichting omvattende één of meer warmtecollectoren volgens één van de voorgaande conclusies en ten minste één verdeelinrichting, waarbij de verdeelinrichting omvat: ten minste één toevoermiddel om een warmteoverdrachtsfluïdum naar de verdeelinrichting toe te voeren; ten minste één afvoermiddel om het warmteoverdrachtsfluïdum uit de verdeelinrichting af te voeren; en één of meer verbindingsstukken om de één of meer warmtecollectoren met de verdeelinrichting te verbinden, met het kenmerk dat het ten minste ene toevoermiddel is verbonden met ten minste één van de ten minste ene inlaatmiddelen van de één of meer warmtecollectoren en het ten minste ene afvoermiddel is verbonden met ten minste één van de ten minste ene uitlaatmiddelen van de één of meer warmtecollectoren.A device comprising one or more heat collectors according to any of the preceding claims and at least one distribution device, the distribution device comprising: at least one supply means for supplying a heat transfer fluid to the distribution device; at least one discharge means for discharging the heat transfer fluid from the distribution device; and one or more connecting pieces for connecting the one or more heat collectors to the distribution device, characterized in that the at least one supply means is connected to at least one of the at least one inlet means of the one or more heat collectors and the at least one discharge means is connected to at least one of the at least one outlet means of the one or more heat collectors. 12. Inrichting volgens conclusie 11, met het kenmerk dat de verdeelinrichting verder een isolerende laag omvat die het ten minste ene toevoermiddel en het ten minste ene afvoermiddel omsluit. 13 Inrichting volgens conclusie 11 of 12, met het kenmerk dat de inrichting twee of meer parallel gekoppelde warmtecollectoren omvat, waarbij elk van de ten minste ene inlaatmiddelen van de warmtecollectoren is verbonden met het ten minste ene toevoermiddel van de verdeelinrichting en elk van de ten minste ene uitlaatmiddelen van de warmtecollectoren is verbonden met het ten minste ene afvoermiddel van de verdeelinrichting.Device as claimed in claim 11, characterized in that the distributing device further comprises an insulating layer which encloses the at least one supply means and the at least one discharge means. Device as claimed in claim 11 or 12, characterized in that the device comprises two or more heat collectors coupled in parallel, wherein each of the at least one inlet means of the heat collectors is connected to the at least one supply means of the distribution device and each of the at least one one outlet means of the heat collectors is connected to the at least one outlet means of the distribution device. 14. Inrichting volgens één van de conclusies 11 tot en met 13, met het kenmerk dat de inrichting verder een geïsoleerde opslaghouder voor warmteoverdrachtsfluïdum omvat die is verbonden met het ten minste ene afvoermiddel van de verdeelinrichting voor het opslaan van thermische energie.Device according to one of claims 11 to 13, characterized in that the device further comprises an insulated heat transfer fluid storage container connected to the at least one discharge means of the distribution device for storing thermal energy. 15. Systeem omvattende de inrichting volgens één van de conclusies 11 tot en met 14, met het kenmerk dat het warmteoverdrachtsfluïdum water is en waarbij het warmteoverdrachtsfluïdumsysteem in open communicatie met het watertoevoersysteem verkeert.System comprising the device according to one of claims 11 to 14, characterized in that the heat transfer fluid is water and wherein the heat transfer fluid system is in open communication with the water supply system.
NL2012949A 2014-06-04 2014-06-04 Heat collector. NL2012949B1 (en)

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