CN113340143A - Greenhouse underground heat storage system - Google Patents
Greenhouse underground heat storage system Download PDFInfo
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- CN113340143A CN113340143A CN202110763787.7A CN202110763787A CN113340143A CN 113340143 A CN113340143 A CN 113340143A CN 202110763787 A CN202110763787 A CN 202110763787A CN 113340143 A CN113340143 A CN 113340143A
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- 238000005338 heat storage Methods 0.000 title claims abstract description 130
- 239000002689 soil Substances 0.000 claims abstract description 72
- 239000012782 phase change material Substances 0.000 claims description 6
- 241000270295 Serpentes Species 0.000 claims description 4
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 3
- 239000001110 calcium chloride Substances 0.000 claims description 3
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 3
- 238000009825 accumulation Methods 0.000 abstract description 22
- 238000012546 transfer Methods 0.000 abstract description 13
- 238000004321 preservation Methods 0.000 abstract description 8
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 238000009413 insulation Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 11
- 238000010438 heat treatment Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 7
- 239000011232 storage material Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/0052—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using the ground body or aquifers as heat storage medium
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
- F28D20/026—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat with different heat storage materials not coming into direct contact
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Central Heating Systems (AREA)
- Greenhouses (AREA)
Abstract
A greenhouse underground heat storage system relates to a greenhouse heat storage system. The invention aims to solve the technical problems of poor heat insulation performance, low heat storage capacity, energy shortage and environmental pollution of the existing agricultural greenhouse. The greenhouse underground heat storage system transfers the energy collected by the heat collection system to the phase change heat storage module through the ground heat exchanger, stores all heat in the phase change heat storage module and the soil, and the soil plays a role in heat preservation around the phase change heat storage module and the ground heat exchanger; the heat stored in the phase change heat storage module can be supplied to the greenhouse by the ground heat exchanger through the ground source heat pump, and can also be released to the surrounding soil to enable the soil to store heat together, so that a certain temperature is provided for the root system of crops; can realize thermal storage and recycle, improve the heat storage capacity of energy utilization efficiency and system, make crops not receive winter or overcast and rainy weather influence, solve the not enough problem of traditional heat storage system heat accumulation volume, promote the reliability of system's heat accumulation by a wide margin.
Description
Technical Field
The invention relates to a greenhouse heat storage system.
Background
The cultivation technique in greenhouses is affected by many factors, among which the influence is the greatest with the indoor ambient temperature. Because the area is influenced by the increase of winter weather and daily overcast and rainy weather, the environmental temperature of a plurality of greenhouses can not be maintained, the heat preservation performance can not be effectively exerted, the growth of crops is difficult to be ensured, and the economic benefit is greatly influenced. In order to ensure that crops can normally grow in the winter in the greenhouse, heating or heat storage devices must be appropriately provided. The greenhouse is considered to be one of the most effective facilities for utilizing shallow geothermal energy due to the self heat storage effect, and a higher-grade heat source can be obtained through a heat pump technology and the geothermal energy stored in summer, so that the dependence on fossil energy is greatly reduced.
In recent years, the concept of sustainable development is in depth, and China generally pays attention to the problems of energy shortage, environmental pollution and the like. The ground source heat pump system is one of the systems with mature technology in the world energy market, has the advantages of good stability, high reliability and less cost compared with the traditional heating mode, and is the best substitute product with the highest technical content of the conventional heating system if considering environmental benefit, energy guarantee and long-term utilization. However, with the gradual deepening of the application of the ground source heat pump and the extension of the use area, the problem of energy utilization load imbalance appears in the area with annual average cooling and large heat load demand difference, the comprehensive efficiency is reduced, and the application of the ground source heat pump is influenced. Because the operation time of the ground source heat pump is short in summer, the heat storage is less, the heating time is long in winter, the load requirement is high, and the soil heat storage capacity is not enough to maintain the temperature required in the greenhouse. When the system continuously operates, if other technologies are not used for assisting soil heat storage, the soil temperature is gradually reduced, the condensation temperature or the evaporation temperature of the heat pump fluctuates under the influence of soil temperature change, and the operation energy efficiency of the system is influenced by the instability of the soil temperature.
Because soil has a large heat capacity, a greenhouse generally carries out heat storage in the daytime and heat release at night through soil passively, so that the hot environment in the greenhouse is effectively improved, but the soil has a limited heat storage and release function, energy cannot be stored and utilized to a large extent, and the heat loss of the greenhouse cannot be met in low-temperature weather. The energy is stored by utilizing the heat storage technology, so that the purposes of energy supplement and reutilization can be achieved, and the influence caused by energy unbalance is reduced. The storage techniques of heat in common use are basically divided into two main types, namely sensible heat storage and phase change heat storage. The phase-change material is widely used, has strong heat storage performance, absorbs and stores heat generated by solar radiation in the daytime, and releases the stored heat at night, so that the temperature of the greenhouse is improved. The phase-change heat storage material has excellent performance in the aspect of heat energy utilization, the latent heat storage technology for storing heat energy by utilizing phase-change latent heat of the phase-change heat storage material stores energy by phase change of the heat storage material, the temperature is kept unchanged or changed slightly in the phase-change process, and the phase-change heat storage material has the advantages of high energy storage density, relatively small heat storage volume and the like, and has wide development space and application prospect in many fields.
As a developing large country with the largest agricultural population and the fastest economic growth in the world, China fundamentally solves the problem of whether the agriculture can be continuously and rapidly developed and maintain prosperity and stability. With the development of society, China faces the problems of insufficient crop supply, energy shortage, environmental deterioration and the like, new energy is developed in greenhouses, and the key for solving the problems is to convert and store energy.
Disclosure of Invention
The invention provides an underground heat storage system of a greenhouse, aiming at solving the technical problems of poor heat insulation performance, low heat storage capacity, energy shortage and environmental pollution of the existing agricultural greenhouse.
The greenhouse underground heat storage system consists of a phase change heat storage module 1, a ground heat exchanger 2, soil 3, a heat collection system 4, a ground source heat pump 5 and a controller;
the ground heat exchangers 2 are arranged in a snake shape in the soil 3 in the greenhouse 6; the phase change heat storage modules 1 are arranged in soil 3 in a greenhouse 6, and the phase change heat storage modules 1 are uniformly arranged around the ground heat exchanger 2;
the heat output end of the heat collection system 4 is connected with the heat input end of the ground heat exchanger 2; the heat input end of the ground source heat pump 5 is connected with the heat output end of the ground heat exchanger 2;
and the signal output end of the controller is respectively connected with the signal input end of the ground source heat pump 5 and the signal input end of the heat collection system 4.
The heat collecting system 4 and the ground source heat pump 5 can be arranged inside or outside the greenhouse 6 and determined according to actual working conditions.
The working principle of the greenhouse underground heat storage system is as follows:
the invention combines a phase change heat storage module 1 with soil 3 and a ground heat exchanger 2 to construct a novel greenhouse underground heat storage system. Bury phase change heat accumulation module 1 and ground heat exchanger 2 in shallow soil, utilize ground heat exchanger 2 to store up in phase change heat accumulation module 1 and soil 3 with the energy transfer that heating system 4 collected, soil 3 plays heat retaining effect around phase change heat accumulation module 1 and ground heat exchanger 2 simultaneously, thereby phase change heat accumulation module 1 and soil 3 carry out the heat transfer and realize the two heat accumulation jointly, it is strong to reach the heat-retaining ability, the long effect of heat-retaining time, make the heat accumulation fully satisfy the heat supply demand in the greenhouse.
The tail end of the greenhouse underground heat storage system is connected with a ground source heat pump 5, the temperature in the greenhouse is ensured by utilizing the heat stored in the underground heat storage system, and meanwhile, the phase change heat storage module 1 releases heat to the soil 3, so that the soil temperature can be properly improved, the temperature of crop root systems is maintained, and the growth of crops is promoted.
Because the heat collecting system 4 has regional difference, cannot collect heat at night and in rainy days, the soil temperature is unstable, the heat storage capacity is insufficient, and the indoor heat cannot be supplemented in winter, the energy consumption load in the greenhouse is unbalanced, and the heating requirement in the greenhouse cannot be met; the invention utilizes the phase-change heat storage technology and adopts the combination of multiple heat storage technologies, energy is stored in the phase-change heat storage module 1 and the soil 3, the soil 3 plays roles of heat preservation and heat storage at the same time, the energy collected by the heat collection system 4 can be stored in summer or sunny days, the heat stored in the phase-change heat storage module 1 and the soil 3 is released in winter at night or rainy days, part of the heat is transferred to the ground source heat pump 5 to supply heat indoors, the indoor temperature is improved, and the phase-change heat storage module 1 and the soil 3 transfer the stored heat to the root system of crops to maintain the temperature of the root system.
The greenhouse underground heat storage system can realize the storage and the reutilization of heat, improve the energy utilization efficiency and the heat storage capacity of the system, prevent crops from being influenced by winter or rainy weather, solve the problem of insufficient heat storage capacity of the traditional heat storage system and greatly improve the heat storage reliability of the system.
The greenhouse underground heat storage system transfers the energy collected by the heat collection system 4 to the phase change heat storage module 1 through the ground heat exchanger 2, stores all heat in the phase change heat storage module 1 and the soil 3, and meanwhile, the soil 3 plays a role in heat preservation around the phase change heat storage module 1 and the ground heat exchanger 2; the heat stored in the phase change heat storage module 1 can be supplied to the greenhouse by the ground heat exchanger 2 through the ground source heat pump 5; the heat stored in the phase change heat storage module 1 can be released to the surrounding soil 3 to enable the soil 3 to store heat together, and a certain temperature is provided for the root system of crops.
Drawings
FIG. 1 is a schematic top view of an underground heat storage system of a greenhouse according to a first embodiment;
fig. 2 is a schematic view of a greenhouse 6 according to a first embodiment.
Detailed Description
The first embodiment is as follows: the embodiment is a greenhouse underground heat storage system, as shown in fig. 1 and 2, and specifically comprises a phase change heat storage module 1, a ground heat exchanger 2, soil 3, a heat collection system 4, a ground source heat pump 5 and a controller;
the ground heat exchangers 2 are arranged in a snake shape in the soil 3 in the greenhouse 6; the phase change heat storage modules 1 are arranged in soil 3 in a greenhouse 6, and the phase change heat storage modules 1 are uniformly arranged around the ground heat exchanger 2;
the heat output end of the heat collection system 4 is connected with the heat input end of the ground heat exchanger 2; the heat input end of the ground source heat pump 5 is connected with the heat output end of the ground heat exchanger 2;
and the signal output end of the controller is respectively connected with the signal input end of the ground source heat pump 5 and the signal input end of the heat collection system 4.
The heat collecting system 4 and the ground source heat pump 5 can be arranged inside or outside the greenhouse 6 and determined according to actual working conditions.
The working principle of the greenhouse underground heat storage system of the embodiment is as follows:
the phase change heat storage module 1, the soil 3 and the ground heat exchanger 2 are combined together to construct a novel greenhouse underground heat storage system. Bury phase change heat accumulation module 1 and ground heat exchanger 2 in shallow soil, utilize ground heat exchanger 2 to store up in phase change heat accumulation module 1 and soil 3 with the energy transfer that heating system 4 collected, soil 3 plays heat retaining effect around phase change heat accumulation module 1 and ground heat exchanger 2 simultaneously, thereby phase change heat accumulation module 1 and soil 3 carry out the heat transfer and realize the two heat accumulation jointly, it is strong to reach the heat-retaining ability, the long effect of heat-retaining time, make the heat accumulation fully satisfy the heat supply demand in the greenhouse.
The terminal connection ground source heat pump 5 of the greenhouse underground heat storage system of this embodiment utilizes the heat that the underground heat storage system stores to guarantee the temperature in the greenhouse, and phase change heat storage module 1 releases the heat to soil 3 simultaneously, can suitably improve soil temperature, maintains the temperature of crops root system, promotes crops to grow.
Because the heat collecting system 4 has regional difference, cannot collect heat at night and in rainy days, the soil temperature is unstable, the heat storage capacity is insufficient, and the indoor heat cannot be supplemented in winter, the energy consumption load in the greenhouse is unbalanced, and the heating requirement in the greenhouse cannot be met; the invention utilizes the phase-change heat storage technology and adopts the combination of multiple heat storage technologies, energy is stored in the phase-change heat storage module 1 and the soil 3, the soil 3 plays roles of heat preservation and heat storage at the same time, the energy collected by the heat collection system 4 can be stored in summer or sunny days, the heat stored in the phase-change heat storage module 1 and the soil 3 is released in winter at night or rainy days, part of the heat is transferred to the ground source heat pump 5 to supply heat indoors, the indoor temperature is improved, and the phase-change heat storage module 1 and the soil 3 transfer the stored heat to the root system of crops to maintain the temperature of the root system.
The greenhouse underground heat storage system of the embodiment can realize the storage and the reutilization of heat, improves the energy utilization efficiency and the heat storage capacity of the system, enables crops not to be influenced by winter or rainy weather, solves the problem of insufficient heat storage capacity of the traditional heat storage system, and greatly improves the reliability of system heat storage.
The greenhouse underground heat storage system of the embodiment transfers the energy collected by the heat collection system 4 to the phase change heat storage module 1 through the ground heat exchanger 2, stores all heat in the phase change heat storage module 1 and the soil 3, and meanwhile, the soil 3 plays a role in heat preservation around the phase change heat storage module 1 and the ground heat exchanger 2; the heat stored in the phase change heat storage module 1 can be supplied to the greenhouse by the ground heat exchanger 2 through the ground source heat pump 5; the heat stored in the phase change heat storage module 1 can be released to the surrounding soil 3 to enable the soil 3 to store heat together, and a certain temperature is provided for the root system of crops.
The second embodiment is as follows: the first difference between the present embodiment and the specific embodiment is: the phase change heat storage module 1 is composed of a heat exchanger and phase change materials therein. The rest is the same as the first embodiment.
The third concrete implementation mode: the second embodiment is different from the first embodiment in that: the phase-change material is CaCl2·6H2And O. The rest is the same as the second embodiment.
The fourth concrete implementation mode: the difference between this embodiment mode and one of the first to third embodiment modes is: the heat collecting system 4 is a solar heat collector. The rest is the same as one of the first to third embodiments.
The fifth concrete implementation mode: the fourth difference between this embodiment and the specific embodiment is that: the phase change heat storage module 1 is arranged 5 m-200 m below the ground surface. The rest is the same as the fourth embodiment.
The invention was verified with the following tests:
test one: the test is a greenhouse underground heat storage system, as shown in fig. 1 and 2, and specifically comprises a phase change heat storage module 1, a ground heat exchanger 2, soil 3, a heat collection system 4, a ground source heat pump 5 and a controller;
the ground heat exchangers 2 are arranged in a snake shape in the soil 3 in the greenhouse 6; the phase change heat storage modules 1 are arranged in soil 3 in a greenhouse 6, and the phase change heat storage modules 1 are uniformly arranged around the ground heat exchanger 2;
the heat output end of the heat collection system 4 is connected with the heat input end of the ground heat exchanger 2; the heat input end of the ground source heat pump 5 is connected with the heat output end of the ground heat exchanger 2;
the phase change heat storage module 1 consists of a heat exchanger and a phase change heat storage material therein; the phase-change material is CaCl2·6H2O; the heat collecting system 4 is a solar heat collector; the phase change heat storage module 1 is arranged at a position 5 m-10 m below the ground surface;
and the signal output end of the controller is respectively connected with the signal input end of the ground source heat pump 5 and the signal input end of the heat collection system 4.
The heat collecting system 4 and the ground source heat pump 5 can be arranged inside or outside the greenhouse 6 and determined according to actual working conditions.
The working principle of the experimental greenhouse underground heat storage system is as follows:
the phase change heat storage module 1 is combined with soil 3 and a ground heat exchanger 2 in the experiment to construct a novel greenhouse underground heat storage system. Bury phase change heat accumulation module 1 and ground heat exchanger 2 in shallow soil, utilize ground heat exchanger 2 to store up in phase change heat accumulation module 1 and soil 3 with the energy transfer that heating system 4 collected, soil 3 plays heat retaining effect around phase change heat accumulation module 1 and ground heat exchanger 2 simultaneously, thereby phase change heat accumulation module 1 and soil 3 carry out the heat transfer and realize the two heat accumulation jointly, it is strong to reach the heat-retaining ability, the long effect of heat-retaining time, make the heat accumulation fully satisfy the heat supply demand in the greenhouse.
The terminal connection ground source heat pump 5 of this experimental greenhouse underground heat storage system utilizes the heat that underground heat storage system stored to guarantee the temperature in the greenhouse, and phase change heat storage module 1 releases the heat to soil 3 simultaneously, can suitably improve soil temperature, maintains the temperature of crops root system, promotes crops to grow.
Because the heat collecting system 4 has regional difference, cannot collect heat at night and in rainy days, the soil temperature is unstable, the heat storage capacity is insufficient, and the indoor heat cannot be supplemented in winter, the energy consumption load in the greenhouse is unbalanced, and the heating requirement in the greenhouse cannot be met; the invention utilizes the phase-change heat storage technology and adopts the combination of multiple heat storage technologies, energy is stored in the phase-change heat storage module 1 and the soil 3, the soil 3 plays roles of heat preservation and heat storage at the same time, the energy collected by the heat collection system 4 can be stored in summer or sunny days, the heat stored in the phase-change heat storage module 1 and the soil 3 is released in winter at night or rainy days, part of the heat is transferred to the ground source heat pump 5 to supply heat indoors, the indoor temperature is improved, and the phase-change heat storage module 1 and the soil 3 transfer the stored heat to the root system of crops to maintain the temperature of the root system.
This experimental greenhouse underground heat storage system can realize thermal storage and recycle, improves the heat storage capacity of energy utilization efficiency and system, makes crops not receive winter or overcast and rainy weather influence, solves the not enough problem of traditional heat storage system heat accumulation, has promoted the reliability of system's heat accumulation by a wide margin.
The greenhouse underground heat storage system of the test transfers the energy collected by the heat collection system 4 to the phase change heat storage module 1 through the ground heat exchanger 2, stores all heat in the phase change heat storage module 1 and the soil 3, and meanwhile, the soil 3 plays a role in heat preservation around the phase change heat storage module 1 and the ground heat exchanger 2; the heat stored in the phase change heat storage module 1 can be supplied to the greenhouse by the ground heat exchanger 2 through the ground source heat pump 5; the heat stored in the phase change heat storage module 1 can be released to the surrounding soil 3 to enable the soil 3 to store heat together, and a certain temperature is provided for the root system of crops.
Claims (5)
1. A greenhouse underground heat storage system is characterized by consisting of a phase change heat storage module (1), a ground heat exchanger (2), soil (3), a heat collection system (4), a ground source heat pump (5) and a controller;
the ground heat exchangers (2) are arranged in a snake shape in the soil (3) in the greenhouse (6); the phase change heat storage modules (1) are arranged in soil (3) in the greenhouse (6), and the phase change heat storage modules (1) are uniformly arranged around the ground heat exchanger (2);
the heat output end of the heat collection system (4) is connected with the heat input end of the ground heat exchanger (2); the heat input end of the ground source heat pump (5) is connected with the heat output end of the ground heat exchanger (2);
and the signal output end of the controller is respectively connected with the signal input end of the ground source heat pump (5) and the signal input end of the heat collection system (4).
2. An underground heat storage system for greenhouses according to claim 1, wherein the phase change heat storage module (1) is composed of a heat exchanger and a phase change material therein.
3. The underground greenhouse heat storage system according to claim 2, wherein the phase change material is CaCl2·6H2O。
4. An underground heat storage system for greenhouses according to claim 1, wherein the heat collecting system (4) is a solar heat collector.
5. An underground heat storage system for a greenhouse as claimed in claim 1, wherein the phase-change heat storage module (1) is located 5m to 200m below the ground surface.
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| CN202110763787.7A CN113340143A (en) | 2021-07-06 | 2021-07-06 | Greenhouse underground heat storage system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114585240A (en) * | 2022-04-02 | 2022-06-03 | 北京有竹居网络技术有限公司 | Data center waste heat utilization system |
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| US4412527A (en) * | 1980-04-09 | 1983-11-01 | Hitachi, Ltd. | Greenhouse of an underground heat accumulation system |
| CN205491944U (en) * | 2016-03-16 | 2016-08-24 | 天津城建大学 | Warmhouse booth with combined type heating system |
| CN109028253A (en) * | 2018-07-11 | 2018-12-18 | 北京石油化工学院 | A kind of greenhouse solar energy heating system |
| CN109386978A (en) * | 2018-12-05 | 2019-02-26 | 河北省科学院能源研究所 | Energy tower-soil thermal storage coupling buried pipe ground-source heat pump system and its application in soil thermal storage |
| CN111500263A (en) * | 2019-12-31 | 2020-08-07 | 天津市城市规划设计研究院 | Phase-change heat storage concrete structure in severe cold area |
| CN215063958U (en) * | 2021-07-06 | 2021-12-07 | 东北林业大学 | Greenhouse underground heat storage system |
-
2021
- 2021-07-06 CN CN202110763787.7A patent/CN113340143A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4412527A (en) * | 1980-04-09 | 1983-11-01 | Hitachi, Ltd. | Greenhouse of an underground heat accumulation system |
| CN205491944U (en) * | 2016-03-16 | 2016-08-24 | 天津城建大学 | Warmhouse booth with combined type heating system |
| CN109028253A (en) * | 2018-07-11 | 2018-12-18 | 北京石油化工学院 | A kind of greenhouse solar energy heating system |
| CN109386978A (en) * | 2018-12-05 | 2019-02-26 | 河北省科学院能源研究所 | Energy tower-soil thermal storage coupling buried pipe ground-source heat pump system and its application in soil thermal storage |
| CN111500263A (en) * | 2019-12-31 | 2020-08-07 | 天津市城市规划设计研究院 | Phase-change heat storage concrete structure in severe cold area |
| CN215063958U (en) * | 2021-07-06 | 2021-12-07 | 东北林业大学 | Greenhouse underground heat storage system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114585240A (en) * | 2022-04-02 | 2022-06-03 | 北京有竹居网络技术有限公司 | Data center waste heat utilization system |
| CN114585240B (en) * | 2022-04-02 | 2023-09-22 | 北京有竹居网络技术有限公司 | Data center waste heat utilization system |
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