CN1731027A - Seasonal solar energy heat storage system utilizing phase-change material - Google Patents
Seasonal solar energy heat storage system utilizing phase-change material Download PDFInfo
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- CN1731027A CN1731027A CN 200510010261 CN200510010261A CN1731027A CN 1731027 A CN1731027 A CN 1731027A CN 200510010261 CN200510010261 CN 200510010261 CN 200510010261 A CN200510010261 A CN 200510010261A CN 1731027 A CN1731027 A CN 1731027A
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/20—Solar thermal
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Abstract
The present invention is one seasonal solar heat accumulating system with phase changing material, relates to solar energy accumulating system, and aims at providing city with heat energy in reduced power consumption and environmental pollution. The seasonal solar heat accumulating system consists of solar heat collector, circulating pump, T-valve, valves, plate heat exchanger, heat pump set, heat accumulator with phase changing material and fluid passage. The present invention has the features of best utilization of solar energy, small size of phase changing heat accumulator, high heat accumulating efficiency, high running efficiency of the heat pump set and less ecological pollution.
Description
Technical field:
The present invention relates to the solar heat-preservation system.
Background technology:
Form by thermal source (as coal-burning boiler, combustion gas (oil) boiler, thermalization power station etc.), heat supply network and indoor heating system at traditional heating system in China " three Norths " area at present.As everyone knows, the heating system of China mostly is the central heating pattern of the former Soviet Union that introduces in early 1950s, in service over a long time, find that there are the following problems: (1) China heating energy consumption is too high, and its index is 2～3 times of developed country under the similar weather conditions; The heating of China's building and the energy resource consumption of air-conditioning account for 30～40% of energy resource consumption total amount; (2) thermal source of tradition heating gives off a large amount of CO
2, SO
2With harmful objects such as dust, the destruction (as warmization of the whole world, acid rain etc.) that causes ecological environment.The ratio of coal accounts for more than 70% in the production of China's energy and in consuming, and under the condition based on the energy resource structure of coal, building heating usefulness can cause one of principal element of urban atmospheric pollution especially.And China is located in the east of Eurasia, the Northern Hemisphere, and is vast in territory, and solar energy resources is abundant.The data information of surveying accumulation for a long time according to 700 meteorological stations in the whole nation shows that between 3300～8400MJ/m2a, its mean value is about 5900MJ/m2a to China's various places solar radiation total amount greatly.
Summary of the invention:
The present invention has city heat supply energy consumption height, the serious problem of environmental pollution now in order to solve, and then a kind of seasonal solar energy heat storage system that utilizes phase-change material is provided, and the technical scheme that addresses this problem is as follows:
The present invention comprises solar thermal collector 1, circulating pump 7, triple valve 8, valve 9, the output of solar thermal collector 1 is connected with first triple valve 8-1-1 end with the first valve 9-1 respectively, the other end of the first valve 9-1 is connected with the end of the second valve 9-2, the other end of the second valve 9-2 is connected with the input of circulating pump 7, the output of circulating pump 7 is connected with the end of the second triple valve 8-2-1, the end of the second triple valve 8-2-2 is connected with the end of the first triple valve 8-1-3, the end of the second triple valve 8-2-3 is connected with the input of solar thermal collector 1, at the first triple valve 8-1-2 and the first valve 9-1, be provided with storage heater 2 between the tie point place of the second valve 9-2, storage heater 2 is built-in with phase-change material 13, and phase-change material 13 is provided with fluid passage 14.
It is little that the seasonal solar energy heat storage system that utilizes phase-change material of the present invention has a volume that makes full use of renewable energy solar energy, phase transition heat accumulation unit, the heat storage efficiency height of storage heater 2, the operational efficiency height of source pump 12, the characteristics that ecological environmental pollution is little.
Description of drawings:
Fig. 1 is the overall structure schematic diagram of native system, and Fig. 2 is the surface structure schematic diagram of storage heater 2, and Fig. 3 is the A-A cutaway view of Fig. 2.
The specific embodiment:
The specific embodiment one: present embodiment is by solar thermal collector 1, circulating pump 7, triple valve 8, valve 9 is formed, the output of solar thermal collector 1 is connected with the first triple valve 8-1-1 with the first valve 9-1, the other end of the first valve 9-1 is connected with the end of the second valve 9-2, the other end of the second valve 9-2 is connected with the input of circulating pump 7, the output of circulating pump 7 is connected with the second triple valve 8-2-1, one end, the end of the second triple valve 8-2-2 is connected with the end of the first triple valve 8-1-3, the end of the second triple valve 8-2-3 is connected with the input of solar thermal collector 1, at the first triple valve 8-1-2 and the first valve 9-1, be provided with storage heater 2 between the tie point place of the second valve 9-2, storage heater 2 is built-in with phase-change material 13, and phase-change material 13 is provided with fluid passage 14.
Because the latent heat of phase change of phase-change material is much larger than its sensible heat, therefore, the volume of storage heater 2 can reduce greatly, and feasibility improves greatly.The phase-change material 13 that adopts in the storage heater 2 is CaCl
26H
2O, the fusing point of this phase-change material are 29 ℃, and latent heat of phase change is 187.49kJ/kg, and solid phase specific heat is 1.46kJ/kgK, and liquid phase specific heat is 2.13kJ/kgK, and the solid phase thermal conductivity factor is 1.088W/mK, and the liquid phase thermal conductivity factor is 0.54W/mK, and averag density is 1710kg/m
3Its every m
3The amount of stored heat of phase-change material is about 3.46 * 10
8J～3.82 * 10
8J.
One building usable floor area is the two-layer positive North and South direction villa buildings of 239.21m2.The thermal-arrest time: about about 11 months; Intensity of solar radiation: every day, average intensity of solar radiation was about: 200～500W/m
2
With the Border in Harbin Area is example, the area A c=70 of solar thermal collector 1～100m
2, the volume of storage heater 2 is 565～850m
3, heat-collecting capacity is Q=1.54 * 10
11～2.61 * 10
11J, amount of stored heat is 1.31 * 10
11J～2.12 * 10
11J, building thermic load Qa=2.01 * 10
11J, heating load accounts for 65～100% of thermic load.
With the Beijing area is example, the area A c=30 of solar thermal collector 1～40m
2, the volume of storage heater 2 is 282m
3, heat-collecting capacity is Q=8.21 * 10
10J～10.2 * 10
10J, amount of stored heat is 7.13 * 10
10J～8.55 * 10
10J, building thermic load Qa=9.54 * 10
10J, heating load accounts for 75～89.6% of thermic load.Can come the area of solar thermal collector 1 in the design system and the volume of storage heater 2, to reach optimum Match according to the difference of area and building thermic load.
The specific embodiment two: present embodiment is that system is in the accumulation of heat pattern, solar thermal collector 1 in the system is with storage heater 2 and circulating pump 7 operations, close the first valve 9-1, heat exchanging fluid flows out from solar thermal collector 1, be input to first triple valve 8-1-1 end, output in the input of storage heater 2 and the fluid passage 14 on the phase-change material from storage heater 2 13 from first triple valve 8-1-2 end (end of the first triple valve 8-1-3 is closed) and to flow through, the heat exchanging fluid draw heat that phase-change material 13 (PCM) in the storage heater 2 flows out from solar thermal collector 1 also is stored in the phase-change material 13 storage heater 2, heat exchanging fluid is after the output outflow of storage heater 2, flow to the input of circulating pump 7 through the second valve 9-2, the input of heat exchanging fluid to the second triple valve 8-2-1 of circulating pump 7 outputs, feed back input to solar thermal collector 1 (second triple valve 8-2-2 end is closed) in output by the second triple valve 8-2-3, this cyclic process can make the phase-change material 13 (PCM) in the storage heater 2 constantly absorb heat from the heat exchanging fluid that solar thermal collector 1 flows out and store, and finishes heat-accumulating process when summer, intensity of solar radiation was high (this process by realize).
The specific embodiment three: present embodiment is that system is in the heat release pattern, and present embodiment increases again source pump 12, and two inputs of the evaporimeter 3 of source pump 12 are connected on the tie point at the second valve 9-2 two ends.(Border in Harbin Area can adopt the SHSR-250 source pump to source pump 12, and the standard condition heating capacity is 30KW; The SHSR-150 source pump can be adopted in the Beijing area, the standard condition heating capacity is 18KW) form by evaporimeter 3, throttle mechanism 4, condenser 5, compressor 6, one end of throttle mechanism 4 is connected with an end of evaporimeter 3, the other end of throttle mechanism 4 is connected with an end of condenser 5, the other end of condenser 5 is connected with an end of compressor 6, and the other end of compressor 6 is connected with the other end of evaporimeter 3.Storage heater 2, circulating pump 7 and source pump 12 are moved together, close the first valve 9-1, the second valve 9-2, heat exchanging fluid enters from first triple valve 8-1-3 end, output in the input of storage heater 2 and the fluid passage 14 on the phase-change material from storage heater 2 13 from first triple valve 8-1-2 end (end of the first triple valve 8-1-1 is closed) and to flow through, (storage heater 2 has been stored enough heat energy by the process of the specific embodiment one), make and flow into the low level heat energy of the evaporimeter 3 of source pump 12 in the phase-change material 13 (PCM) of heat exchanging fluid from storage heater 2 behind the absorption heat energy as heat pump, by source pump 12 to building 11 heat supplies, be transported to the input of circulating pump 7 behind the heat exchanging fluid heat release from the other end of the evaporimeter 3 of source pump 12, enter the input of the second triple valve 8-2-1 through the heat exchanging fluid of circulating pump 7 output, export first triple valve 8-1-3 end to by the second triple valve 8-2-2 (the second triple valve 8-2-3 closes) again and circulate.This heat release process is suitable for winter, night or cloudy day.Present embodiment also increases plate type heat exchanger 10 and the 3rd valve 9-3, plate type heat exchanger 10 can just adopt electrical heating or water mode of heating, two outputs of plate type heat exchanger 10 are connected in parallel on the two ends of the 3rd valve 9-3, and the two ends of the 3rd valve 9-3 are connected between the tie point of the input of circulating pump 7 and the second valve 9-2 and evaporimeter 3.When the radiation of solar energy is more weak or amount of stored heat can start plate type heat exchanger 10 when not enough and be the heat exchanging fluid additional heat.In the time need not starting plate type heat exchanger 10, open the 3rd valve 9-3 with plate type heat exchanger 10 short circuits, when starting plate type heat exchanger 10, the 3rd valve 9-3 closes.
The specific embodiment four: present embodiment is that system is in accumulation of heat, the heat release double-mode, solar thermal collector 1, storage heater 2, circulating pump 7 and source pump 12 are moved together, close the first valve 9-1, the second valve 9-2, heat exchanging fluid absorbs by solar thermal collector 1 and is input to first triple valve 8-1-1 end behind the heat and outputs in the input of storage heater 2 and the fluid passage 14 on the phase-change material from storage heater 2 13 from first triple valve 8-1-2 end (end of the first triple valve 8-1-3 is closed) and flow through, the heat exchanging fluid draw heat that phase-change material 13 (PCM) in the storage heater 2 flows out from solar thermal collector 1 also is stored in the phase-change material 13 storage heater 2, heat exchanging fluid is from entering the evaporimeter 3 of source pump 12 after the output of storage heater 2 flows out, low level heat energy as source pump 12, to building 11 heat supplies, be transported to the end of the 3rd valve 9-3 behind the heat exchanging fluid heat release from the other end of the evaporimeter 3 of source pump 12, output to the input of circulating pump 7 at the other end from the 3rd valve 9-3, enter the input of the second triple valve 8-2-1 through the heat exchanging fluid of circulating pump 7 output, the input that exports solar thermal collector 1 to by the second triple valve 8-2-3 (the second triple valve 8-2-2 closes) continues to absorb heat again.Above-mentioned cyclic process not only accumulation of heat but also heat release, it is strong and when the area of heat collector greatly the time that this process is fit to solar radiation on daytime in winter, then solar thermal collector 1 collect heat more than the thermic load of building 11, therefore it is standby unnecessary solar energy storage can be got up.
Claims (4)
1, utilize the seasonal solar energy heat storage system of phase-change material, it comprises solar thermal collector (1), circulating pump (7), triple valve (8), valve (9), the output of solar thermal collector (1) is connected with first triple valve (8-1-1) end with first valve (9-1) respectively, the other end of first valve (9-1) is connected with an end of second valve (9-2), the other end of second valve (9-2) is connected with the input of circulating pump (7), the output of circulating pump (7) is connected with an end of second triple valve (8-2-1), one end of second triple valve (8-2-2) is connected with an end of first triple valve (8-1-3), one end of second triple valve (8-2-3) is connected with the input of solar thermal collector (1), it is characterized in that at first triple valve (8-1-2) and first valve (9-1), be provided with storage heater (2) between the tie point place of second valve (9-2), storage heater (2) is built-in with phase-change material (13), and phase-change material (13) is provided with fluid passage (14).
2, the seasonal solar energy heat storage system that utilizes phase-change material according to claim 1 is characterized in that phase-change material (13) adopts CaCl
26H
2O.
3, the seasonal solar energy heat storage system that utilizes phase-change material according to claim 1, it is characterized in that it also includes source pump (12), two inputs of source pump (12) are connected on the tie point at second valve (9-2) two ends, source pump (12) is by evaporimeter (3), throttle mechanism (4), condenser (5), compressor (6) is formed, one end of throttle mechanism (4) is connected with an end of evaporimeter (3), the other end of throttle mechanism (4) is connected with an end of condenser (5), the other end of condenser (5) is connected with an end of compressor (6), and the other end of compressor (6) is connected with the other end of evaporimeter (3).
4, the seasonal solar energy heat storage system that utilizes phase-change material according to claim 1, it is characterized in that it also contains plate type heat exchanger (10) and the 3rd valve (9-3), two outputs of plate type heat exchanger (10) are connected in parallel on the two ends of the 3rd valve (9-3), and the two ends of the 3rd valve (9-3) are connected between the tie point of evaporimeter (3) of the input of circulating pump (7) and second valve (9-2) and source pump (12).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510010261 CN1731027A (en) | 2005-08-12 | 2005-08-12 | Seasonal solar energy heat storage system utilizing phase-change material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510010261 CN1731027A (en) | 2005-08-12 | 2005-08-12 | Seasonal solar energy heat storage system utilizing phase-change material |
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| CN1731027A true CN1731027A (en) | 2006-02-08 |
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| CN 200510010261 Pending CN1731027A (en) | 2005-08-12 | 2005-08-12 | Seasonal solar energy heat storage system utilizing phase-change material |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943481A (en) * | 2010-09-09 | 2011-01-12 | 东南大学 | Phase change thermal storage type auxiliary solar hot-water device of air source heat pump |
| CN102032823A (en) * | 2010-11-23 | 2011-04-27 | 中国科学院电工研究所 | Solar high-temperature heat storage system with solid heat storage medium |
| CN102203520A (en) * | 2008-09-12 | 2011-09-28 | 因特纽电子有限公司 | Thermal vector system for solar concentration power plant |
| CN102889698A (en) * | 2012-11-05 | 2013-01-23 | 常州能源设备总厂有限公司 | Solar energy storage system |
| CN106369846A (en) * | 2016-08-29 | 2017-02-01 | 天津祥顺科技发展有限公司 | Solar heat collector with phase change material heat storage module |
| CN107388630A (en) * | 2017-06-27 | 2017-11-24 | 江苏大学 | A kind of solar energy heat pump system based on phase-transition heat-storage |
| CN108019973A (en) * | 2017-12-28 | 2018-05-11 | 天津商业大学 | A kind of New-type phase change accumulation of heat refrigerating and heat-supplying system |
-
2005
- 2005-08-12 CN CN 200510010261 patent/CN1731027A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102203520A (en) * | 2008-09-12 | 2011-09-28 | 因特纽电子有限公司 | Thermal vector system for solar concentration power plant |
| CN101943481A (en) * | 2010-09-09 | 2011-01-12 | 东南大学 | Phase change thermal storage type auxiliary solar hot-water device of air source heat pump |
| CN102032823A (en) * | 2010-11-23 | 2011-04-27 | 中国科学院电工研究所 | Solar high-temperature heat storage system with solid heat storage medium |
| CN102889698A (en) * | 2012-11-05 | 2013-01-23 | 常州能源设备总厂有限公司 | Solar energy storage system |
| CN102889698B (en) * | 2012-11-05 | 2014-04-23 | 常州能源设备总厂有限公司 | Solar energy storage system |
| CN106369846A (en) * | 2016-08-29 | 2017-02-01 | 天津祥顺科技发展有限公司 | Solar heat collector with phase change material heat storage module |
| CN107388630A (en) * | 2017-06-27 | 2017-11-24 | 江苏大学 | A kind of solar energy heat pump system based on phase-transition heat-storage |
| CN108019973A (en) * | 2017-12-28 | 2018-05-11 | 天津商业大学 | A kind of New-type phase change accumulation of heat refrigerating and heat-supplying system |
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