CN102538230B - Solar phase change thermal storage heating apparatus and method - Google Patents
Solar phase change thermal storage heating apparatus and method Download PDFInfo
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- CN102538230B CN102538230B CN2011104553556A CN201110455355A CN102538230B CN 102538230 B CN102538230 B CN 102538230B CN 2011104553556 A CN2011104553556 A CN 2011104553556A CN 201110455355 A CN201110455355 A CN 201110455355A CN 102538230 B CN102538230 B CN 102538230B
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000012782 phase change material Substances 0.000 claims abstract description 31
- 238000009413 insulation Methods 0.000 claims abstract description 9
- 239000011324 bead Substances 0.000 claims description 45
- 238000009825 accumulation Methods 0.000 claims description 43
- 238000005338 heat storage Methods 0.000 claims description 34
- 230000007704 transition Effects 0.000 claims description 18
- 229910001220 stainless steel Inorganic materials 0.000 claims description 14
- 239000010935 stainless steel Substances 0.000 claims description 14
- 238000010521 absorption reaction Methods 0.000 claims description 8
- 239000011810 insulating material Substances 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 230000005855 radiation Effects 0.000 abstract description 9
- 239000012774 insulation material Substances 0.000 abstract 1
- 238000004146 energy storage Methods 0.000 description 6
- 238000004321 preservation Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S60/00—Arrangements for storing heat collected by solar heat collectors
- F24S60/10—Arrangements for storing heat collected by solar heat collectors using latent heat
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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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Central Heating Systems (AREA)
- Building Environments (AREA)
Abstract
The invention relates to a solar phase change thermal storage heating apparatus and a solar phase change thermal storage heating method. The apparatus comprises a thermal storage box body consisting of a thermal insulation material and transparent insulation boards, phase change thermal storage small balls, a circulating fan and a heating fan. In the daytime, the solar radiation of the sunlight is converted into heat energy through the transparent insulation boards, the heat is adsorbed by the surfaces of the thermal storage small balls, the temperatures of the thermal storage balls are risen and the heat is transferred to phase change materials through heat conduction, the phase change materials are molten and the energy is stored; and after the temperatures of the thermal storage small balls on the upper layer reach the phase change temperature of the phase change materials in the thermal storage small balls on the upper layer, the circulating fan is started to timely transfer the adsorbed surplus solar radiation energy to the thermal storage small balls on the lower layers by a convection heat transfer mode and the energy is stored. At night, when the indoor temperature is excessively low, an air inlet is opened, the circulating fan is shut down and the heating fan is started to drive the air to flow, so that the heat is rapidly extracted from the thermal storage small balls to heat a room.
Description
Technical field
The present invention relates to a kind of storage of solar energy and release tech, particularly a kind ofly be widely used in building, solar energy phase transition heat accumulation heating installation and the method for the indoor heating of the facility such as agricultural greenhouse.
Background technology
The solar energy supply has randomness, intermittence, is subjected to geography, round the clock with the regular impact that changes such as season, and the restriction of the enchancement factor such as rain or shine sexual intercourse.Therefore, utilize solar heating, the characteristics such as the energy resource density that is subject to solar radiation and himself existence is low, cyclic fluctuation have limited the application of heliotechnics greatly.Passive solar heating technology adopts the methods such as thermal-arrest wall and benefited window to realize that the sun on daytime gets hot, but just can't obtain solar energy night.
In order to overcome this defective, usually adopt electrical heating to act as a supplement, need to consume mass energy, not only uneconomical but also dangerous.Phase-change accumulation energy has that energy storage density is high, energy storage easy control of temperature and the advantage such as range of choice is wide.Initiatively solar energy system utilizes phase-change accumulation energy to overcome the above problems, and the releasable heat of the sun on daytime is stored by phase-change material, and the energy that will accumulate night discharges and carries out indoor heating, and existing pertinent literature is reported it.Patent 02109563.9 has proposed a kind of " the solar heat-preservation heating is for cooling method and device ", by accepting solar energy with heat collector, and heat is stored in underground deep layer soil, when the heating of winter or summer or refrigeration, with heat-obtaining with get the device for cooling heat removal or cold heats or cooling.But this device utilizes soil thermal storage, and device is too complicated, and partial component needs in buried soil, and great in constructing amount, cost is high.Patent 200920245783.4 has proposed a kind of " phase-change solar hot air heater ", undergoes phase transition sunshine by daytime heat accumulation plate being placed in outdoor acceptance, is placed in indoor adiabatic the preservation, uses when low without solar radiation and indoor temperature until night.But this warmer needs manually-operated that heat accumulation plate is taken into and adiabatic the preservation, operation inconvenience.In addition, put into indoor preservation and the heat radiation need to take certain space, room.Patent 201010151097.8 has proposed a kind of " high-efficiency low-cost solar thermal storage and heating device ", by heat storage units with daytime solar radiant energy be converted into thermal energy storage, night or cloudy day start blower fan, drive Air Flow, heat is taken out from heat storage units, be indoor heating.But this device can only arrange single heat storage units, and the cavity of Air Flow need be set between heat storage units and heat-barrier material.Therefore, this device heat storage capacity is limited, takes up room larger.
Summary of the invention
The object of the present invention is to provide that a kind of can to overcome the solar heat-preservation volume large, the shortcoming that energy storage density is low, heat storage capacity is strong, compact conformation, the thermal efficiency is high, make the daytime regenerative apparatus can fully absorb solar radiation and with energy storage, in order to solar energy phase transition heat accumulation heating installation and the method for the use of warming oneself night.
For achieving the above object, the technical solution used in the present invention is: comprise the accumulation of heat casing that heat preserving and insulating material and transparent heat-insulation plate form, be provided with some layers of phase-transition heat-storage bead in the accumulation of heat casing, upper and lower end at the phase-transition heat-storage bead is respectively arranged with inlet channel and outlet passageway, the lower end of heat preserving and insulating material offers the venthole that is connected with outlet passageway, inlet channel and outlet passageway are connected through the circulating air passage, and in the circulating air passage, circulating fan are installed;
Also be provided with the air intake valve that is connected with atmosphere on described inlet channel;
The end of described outlet passageway is also installed the heating fan with temperature sensor.
Coating for selective absorption on the phase-transition heat-storage bead plated surface of the described the superiors.
Described phase-transition heat-storage bead is the Stainless Steel Spherical Shell Punch that contains cavity, the small ball's diameter is 30-200mm, inside is filled with phase-change material, the volume of phase-change material is 3/4 of Stainless Steel Spherical Shell Punch volume, and place, the outer hole of described accumulation of heat stainless steel bead adopts the stainless steel plug that scribbles high-temperature plastic to insert the sealing of outer hole.
The inner phase-change material of filling of the described bead of phase-transition heat-storage from top to bottom adopts gradient to arrange, namely the phase transition temperature of phase-change material is successively successively decreased from top to bottom.
In the phase-transition heat-storage bead of described upper strata, the phase-change material phase transition temperature is 40 ℃-60 ℃, and in lower floor's phase-transition heat-storage bead, the phase-change material phase transition temperature is 25 ℃-50 ℃.
Method of the present invention is as follows: during the daytime accumulation of heat, close air intake valve that inlet channel is connected with atmosphere and the heating fan of outlet passageway end, start the circulating fan in circulation canal, the heat that gas is not in time accumulated upper strata accumulation of heat bead by forced-convection heat transfer is carried into lower floor's accumulation of heat bead and stores;
Night is when heating, and closes circulating fan, opens valve that inlet channel is connected with atmosphere, starts heating fan with in air suction accumulation of heat casing, and air carries out heat convection with the accumulation of heat bead in flow process, and heat absorption heats up, and advances outlet passageway and enters indoor.
The present invention gives full play to heat storage capacity and the porous of phase-change material and piles up the characteristics that the ball specific area is large, exchange capability of heat is strong, and transparent heat-insulation plate and heat preserving and insulating material are encapsulated the accumulation of heat bead.On daytime, sunlight sees through the transparent heat-insulation plate solar radiation is converted into heat energy, the surface heat absorption of accumulation of heat bead, and temperature raises, and transfers heat to phase-change material by heat conduction, phase-change material fusing, storage power; Simultaneously, start circulating fan, the heat that gas is not in time accumulated upper strata accumulation of heat bead by forced-convection heat transfer is carried into lower floor's accumulation of heat bead and stores.Open air inlet night when indoor temperature is too low, close circulating fan and start heating fan, drives Air Flow, heat taken out fast be indoor heating from the accumulation of heat bead.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the A-A face cutaway view of Fig. 1;
Fig. 3 is the structural representation of phase-transition heat-storage bead housing;
Fig. 4 is the structural representation of the phase-transition heat-storage bead of packaging phase change material.
Wherein, hole, 2-4 stainless steel plug outside 1 heat preserving and insulating material, 2 phase-transition heat-storage beads, 3 transparent heat-insulation plates, 4 inlet channels, 5 ventholes, 6 outlet passageways, 7 heating fans with temperature sensor, 8 circulating air passages, 9 circulating fans, 10 air intake valves, 2-1 Stainless Steel Spherical Shell Punch, 2-2 phase-change material, 2-3.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Referring to Fig. 1,2, the present invention includes the accumulation of heat casing that heat preserving and insulating material 1 and transparent heat-insulation plate 3 form, be provided with some layers of phase-transition heat-storage bead 2 in the accumulation of heat casing, coating for selective absorption on phase-transition heat-storage bead 2 plated surfaces of the superiors, the inner phase-change material of filling of phase-transition heat-storage bead 2 adopts gradient to arrange from top to bottom, namely the phase transition temperature of phase-change material is successively successively decreased from top to bottom, in the phase-transition heat-storage bead of upper strata, the phase-change material phase transition temperature is 40 ℃-60 ℃, and in lower floor's phase-transition heat-storage bead, the phase-change material phase transition temperature is 25 ℃-50 ℃.Upper and lower end at phase-transition heat-storage bead 2 is respectively arranged with inlet channel 4 and outlet passageway 6, the lower end of heat preserving and insulating material 1 offers the venthole 5 that is connected with outlet passageway 6, inlet channel 4 and outlet passageway 6 are connected through circulating air passage 8, and in circulating air passage 8, circulating fan 9 are installed;
Also be provided with the air intake valve that is connected with atmosphere on described inlet channel 4;
The end of described outlet passageway 6 is also installed the heating fan 7 with temperature sensor.
Referring to Fig. 3,4, phase-transition heat-storage bead 2 is for containing the Stainless Steel Spherical Shell Punch of cavity, the small ball's diameter is 30-100mm, inside is filled with phase-change material 2-2, the volume of phase-change material 2-2 is 3/4 of Stainless Steel Spherical Shell Punch 2-1 volume, and 2-3 place, the outer hole of described accumulation of heat stainless steel bead adopts the stainless steel plug 2-4 that scribbles high-temperature plastic to insert outer hole 2-3 sealing.
During the daytime accumulation of heat, close valve that inlet channel 4 is connected with atmosphere and the heating fan 7 of outlet passageway end, sunlight sees through the transparent heat-insulation plate solar radiation is converted into heat energy, the heat absorption of accumulation of heat bead surface, temperature raises and transfers heat to phase-change material by heat conduction, the phase-change material fusing, storage power; After upper strata accumulation of heat bead reaches the phase change material inside phase transition temperature, start circulating fan heat in time is passed to lower floor's accumulation of heat bead by the mode of heat convection, and energy storage is got up;
Night is when heating, close circulating fan 9, open valve that inlet channel is connected with atmosphere, start heating fan 7 with in air suction accumulation of heat casing, air carries out heat convection with accumulation of heat bead 2 in flow process, heat absorption heats up, and advances outlet passageway and enters indoor.
The present invention compared with prior art, the most outstanding characteristics and significant effect are: adopt Stainless Steel Spherical Shell Punch accumulation of heat bead to overcome the phase-change material thermal conductivity factor as heat storage units low, store and the slow-footed shortcoming that releases energy, heat storage capacity is strong, storage and release heat rapid.The pore structure that is encapsulated between the accumulation of heat bead in the accumulation of heat casing can make gas communication, makes the heat accumulating and heating device volume greatly reduce, compact conformation.The bead specific area is large owing to piling up, and can fully receive solar radiation and be translated into heat to store that when helping warm oneself night, heat discharges rapidly.
Claims (4)
1. solar energy phase transition heat accumulation heating installation, it is characterized in that: comprise the accumulation of heat casing that heat preserving and insulating material (1) and transparent heat-insulation plate (3) form, be provided with some layers of phase-transition heat-storage bead (2) in the accumulation of heat casing, upper at phase-transition heat-storage bead (2), the lower end is respectively arranged with inlet channel (4) and outlet passageway (6), the lower end of heat preserving and insulating material (1) offers the venthole (5) that is connected with outlet passageway (6), inlet channel (4) and outlet passageway (6) are connected through circulating air passage (8), and circulating fan (9) is installed in circulating air passage (8),
Also be provided with the air intake valve (10) that is connected with atmosphere on described inlet channel (4);
The end of described outlet passageway (6) is also installed the heating fan (7) with temperature sensor;
Described phase-transition heat-storage bead (2) is for containing the Stainless Steel Spherical Shell Punch (2-1) of cavity, the small ball's diameter is 30-200mm, inside is filled with phase-change material (2-2), the volume of phase-change material (2-2) is 3/4 of Stainless Steel Spherical Shell Punch (2-1) volume, and outside described phase-transition heat-storage bead, hole (2-3) locates to adopt the stainless steel plug (2-4) that scribbles high-temperature plastic to insert outer hole (2-3) sealing;
The inner phase-change material of filling of described phase-transition heat-storage bead (2) adopts gradient to arrange, namely the phase transition temperature of phase-change material is successively successively decreased from top to bottom.
2. solar energy phase transition heat accumulation heating installation according to claim 1, is characterized in that: coating for selective absorption on phase-transition heat-storage bead (2) plated surface of the superiors.
3. solar energy phase transition heat accumulation heating installation according to claim 1 is characterized in that: in the phase-transition heat-storage bead of upper strata, the phase-change material phase transition temperature is 40 ℃-60 ℃, and in lower floor's phase-transition heat-storage bead, the phase-change material phase transition temperature is 25 ℃-50 ℃.
One kind as claimed in claim 1 the device the solar energy phase transition heat accumulation heating method, it is characterized in that: during the daytime accumulation of heat, close air intake valve (10) that inlet channel (4) is connected with atmosphere and the heating fan (7) of outlet passageway end, start the circulating fan (9) in circulation canal, the heat that gas is not in time accumulated upper strata accumulation of heat bead by forced-convection heat transfer is carried into lower floor's accumulation of heat bead and stores;
Night is when heating, close circulating fan (9), open valve that inlet channel is connected with atmosphere, start heating fan (7) with in air suction accumulation of heat casing, air carries out heat convection with accumulation of heat bead (2) in flow process, heat absorption heats up, and enters indoor through outlet passageway.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104553556A CN102538230B (en) | 2011-12-30 | 2011-12-30 | Solar phase change thermal storage heating apparatus and method |
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| CN2011104553556A CN102538230B (en) | 2011-12-30 | 2011-12-30 | Solar phase change thermal storage heating apparatus and method |
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| CN102538230A CN102538230A (en) | 2012-07-04 |
| CN102538230B true CN102538230B (en) | 2013-11-06 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020263954A1 (en) | 2019-06-26 | 2020-12-30 | University Of Houston System | Systems and methods for full spectrum solar thermal energy harvesting and storage by molecular and phase change material hybrids |
| CN113124578A (en) * | 2021-05-08 | 2021-07-16 | 燕山大学 | Heat accumulation type constant-temperature self-driven heat collector |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS60101453A (en) * | 1983-11-07 | 1985-06-05 | Shiyoujirou Nagao | Semi-mechanical solar house |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2020263954A1 (en) | 2019-06-26 | 2020-12-30 | University Of Houston System | Systems and methods for full spectrum solar thermal energy harvesting and storage by molecular and phase change material hybrids |
| EP3990837A4 (en) * | 2019-06-26 | 2023-07-19 | University of Houston System | Systems and methods for full spectrum solar thermal energy harvesting and storage by molecular and phase change material hybrids |
| CN113124578A (en) * | 2021-05-08 | 2021-07-16 | 燕山大学 | Heat accumulation type constant-temperature self-driven heat collector |
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| CN102538230A (en) | 2012-07-04 |
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