CN211400306U - Phase-change energy-storage type water heating system - Google Patents
Phase-change energy-storage type water heating system Download PDFInfo
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- CN211400306U CN211400306U CN201922228984.XU CN201922228984U CN211400306U CN 211400306 U CN211400306 U CN 211400306U CN 201922228984 U CN201922228984 U CN 201922228984U CN 211400306 U CN211400306 U CN 211400306U
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Abstract
The utility model provides a phase transition energy storage formula hot-water heating system, including refrigerant circulation subsystem, suspension circulation subsystem, refrigerant circulation subsystem includes condensation heat transfer portion, and suspension circulation subsystem includes circulating pump, first heat transfer portion, second heat transfer portion, wherein can carry out the heat exchange between first heat transfer portion and the condensation heat transfer portion, is equipped with domestic water heat exchanger in the second heat transfer portion and realizes the heat exchange through suspension between the two, and the suspension of circulation is phase change material microcapsule suspension among the suspension circulation subsystem. The utility model provides a pair of phase change energy storage formula hot-water heating system adopts phase change energy storage equipment and water heat exchanger's disconnect-type design, and the water safety of lift system adopts the suspension that has the phase change material microcapsule to realize that the heat accumulation is exothermic simultaneously, has promoted hot-water heating system's heat exchange efficiency.
Description
Technical Field
The utility model belongs to the technical field of the phase transition heat accumulation, concretely relates to phase transition energy storage formula hot water system.
Background
The phase-change heat storage type heat pump water heater or the hot water system applies the phase-change heat storage technology to the heat pump water heater, and the water heater or the hot water system fully utilizes the characteristics of large energy storage density, stable phase-change interval and the like of the phase-change material, so that the water heater or the hot water system has the advantages of small heat storage tank volume and stable heat release water temperature compared with the traditional heat pump water heater. However, most of the phase-change heat storage heat pump water heaters related to the prior art are formed by uniformly packaging phase-change materials in a phase-change heat storage tank, wherein the phase-change heat storage tank is provided with a refrigerant pipe for circulating a refrigerant and a water pipe for circulating domestic water in addition to the corresponding phase-change heat storage materials, and heat is transferred among the refrigerant, the phase-change materials and the domestic water, the heat exchange area is relatively small (at least halved), so that the heat exchange efficiency is low, the energy efficiency of a water heater of a hot water system is low, and on the other hand, the phase-change material has certain corrosivity (especially organic salt which is possibly added when the heat storage capacity of the phase-change material is improved), and can corrode a refrigerant pipe or a water pipe after long-term application, so that the potential safety hazard of water utilization exists.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the utility model is to provide a phase transition energy storage formula hot-water heating system adopts phase transition energy storage equipment and water heat exchanger's disconnect-type design, can utilize the advantage of the high energy storage density of phase transition energy storage, when improving the heat transfer efficiency, the water safety of lift system adopts the suspension that has the phase transition material microcapsule to realize that the heat accumulation is exothermic simultaneously, has promoted hot-water heating system's heat exchange efficiency.
In order to solve the problem, the utility model provides a phase transition energy storage formula hot-water heating system, including refrigerant circulation subsystem, suspension circulation subsystem, refrigerant circulation subsystem includes condensation heat transfer portion, suspension circulation subsystem is including the circulating pump, first heat transfer portion, the second heat transfer portion of pipe connection in proper order, wherein first heat transfer portion with can carry out the heat exchange between the condensation heat transfer portion, be equipped with domestic water heat exchanger in the second heat transfer portion and realize the heat exchange through suspension between the two, the suspension of circulation is phase change material microcapsule suspension among the suspension circulation subsystem.
Preferably, the phase change temperature range of the phase change material in the phase change material microcapsule is 40-60 ℃; and/or the circulating pump is a peristaltic pump.
Preferably, the domestic water heat exchanger comprises one of a finned tube heat exchanger, a spiral tube heat exchanger and a coiled tube heat exchanger.
Preferably, the pipeline of the suspension circulation subsystem is provided with a filling valve and/or an exhaust valve.
Preferably, the pipeline of the suspension liquid circulation subsystem is also provided with an expansion pipe.
Preferably, the second heat exchange part comprises a tank body, and the domestic water heat exchanger is positioned in the tank body.
Preferably, a protection valve and/or a pressure detection device are/is arranged on the tank body.
The utility model provides a pair of phase change energy storage formula hot-water heating system adopts the disconnect-type design of phase change energy storage equipment and water heat exchanger, can utilize the advantage of the high energy storage density of phase change energy storage, when improving the heat transfer efficiency, the water safety of lift system adopts the suspension that has the phase change material microcapsule to realize that the heat accumulation is exothermic simultaneously, has promoted hot-water heating system's heat exchange efficiency.
Drawings
Fig. 1 is a schematic diagram of a system principle of a phase-change energy-storage type water heating system according to an embodiment of the present invention, in which arrows respectively show a flow direction of a refrigerant in a refrigerant pipe, a flow direction of a suspension in a pipeline in a suspension circulation subsystem, and a flow direction of water in a water pipe.
The reference numerals are represented as:
101. a condensation heat exchange part; 102. a compressor; 103. an evaporation heat exchange part; 104. a throttling element; 105. a four-way valve; 201. a circulation pump; 202. a first heat exchanging portion; 203. a second heat exchanging portion; 204. a fill valve; 205. An exhaust valve; 206. a discharge valve; 207. an expansion tube; 208. a protection valve; 209. a pressure detection device; 210. a one-way valve; 211. a temperature detection device; 212. a rubber tube; 301. a domestic water heat exchanger; 302. A water inlet pipe; 303. and (5) discharging a water pipe.
Detailed Description
Referring to fig. 1, according to an embodiment of the present invention, there is provided a phase change energy storage type hot water system, including a refrigerant circulation subsystem and a suspension circulation subsystem, the refrigerant circulation subsystem includes a compressor 102, a condensation heat exchange portion 101, a throttling element 104 (e.g., an electronic expansion valve), and an evaporation heat exchange portion 103, which are sequentially connected by a pipeline and form a refrigerant circulation, the suspension circulation subsystem includes a circulation pump 201, a first heat exchange portion 202, and a second heat exchange portion 203, which are sequentially connected by a pipeline, wherein heat exchange can be performed between the first heat exchange portion 202 and the condensation heat exchange portion 101, a domestic water heat exchanger 301 is disposed in the second heat exchange portion 203, and heat exchange is realized between the two by a suspension, and the suspension circulating in the suspension circulation subsystem is a phase change material microcapsule suspension. Among this technical scheme, adopt the disconnect-type design of phase change energy storage equipment and water heat exchanger, can utilize the advantage of the high energy storage density of phase change energy storage, when improving the heat transfer efficiency, the water safety of lift system adopts the suspension that has the phase change material microcapsule to realize that the heat accumulation is exothermic simultaneously, has promoted hot water system's heat exchange efficiency. The phase change material microcapsule is used as a prior art, specifically, the phase change material is coated by organic or inorganic materials, the direct contact between the core material and the external environment is avoided, the formed composite material with micro/nano size can effectively solve the problems of leakage, corrosion, phase separation and the like of the phase change material, the use efficiency of the phase change material is improved, and the microcapsule with the particle size of 1-1000 μm is formed, the phase change material microcapsule with stable performance is dispersed in common heat transfer fluid (such as water or glycol liquid and the like) to form solid-liquid two-phase flow (suspension liquid) which has the characteristics of both the phase change material and the transport medium, and the phase change material microcapsule has the advantages of large apparent specific heat capacity, high heat transfer rate, wide application range, small heat loss in the heat storage and heat transfer process, capability of reducing the sizes of corresponding pipelines and heat exchangers and the like, the phase-change material can be directly recycled in the pipeline of the equipment, and the suspension liquid has the heat storage capacity of the phase-change material and the heat transfer capacity of the common fluid. The aforementioned suspensions are understood to be heat transfer media. And the domestic water heat exchanger 301 is provided with a corresponding water inlet pipe 302 and a corresponding water outlet pipe 303.
Further, the refrigerant circulation subsystem further includes a four-way valve 105, so that the refrigerant circulation subsystem has cooling and heating functions, and at this time, it can be understood that the hot water system can meet the requirements of cooling water as well as the requirements of heating water.
In order to prevent potential safety hazards caused by overhigh temperature of the outlet water of the hot water system, the phase change temperature range of the phase change material in the phase change material microcapsule is selected to be 40-60 ℃. And/or the circulation pump 201 is a peristaltic pump to ensure stability of the suspension at low flow rates.
The specific type of the domestic water heat exchanger 301 may be various, for example, one of a finned tube heat exchanger, a spiral tube heat exchanger, and a serpentine tube heat exchanger.
Preferably, a filling valve 204 and/or an exhaust valve 205 and/or an exhaust valve 206 are arranged on the pipeline of the suspension circulation subsystem, the filling valve 204 is used for filling the suspension in the pipeline of the suspension circulation subsystem, the exhaust valve 205 is arranged to ensure the filling degree of the suspension in the pipeline when the suspension is filled into the pipeline, and the exhaust valve 206 is used for draining the suspension in the pipeline. Further, a check valve 210 is arranged on a pipeline between the filling valve 204 and the suspension liquid circulation subsystem pipeline to ensure the counter flow in the suspension liquid filling process.
In order to absorb the volume fluctuation of the suspension caused by the temperature change and ensure the pressure stability of the system, an expansion pipe 207 is also arranged on the pipeline of the suspension circulation subsystem.
As a specific implementation manner of the second heat exchanging part 203, preferably, the second heat exchanging part 203 comprises a tank body, and the domestic water heat exchanger 301 is located in the tank body.
Preferably, the tank body is provided with a protection valve 208 and/or a pressure detection device 209 for monitoring the pressure in the suspension liquid circulation subsystem pipeline in real time, and/or a temperature detection device 211 for monitoring the temperature of the suspension liquid in the suspension liquid circulation subsystem pipeline, especially in the tank body in real time.
The rubber pipe 212 is arranged between two adjacent pipelines in the suspension circulation subsystem pipeline to realize the connection effect of the two pipelines, the rubber pipe 212 can effectively offset the fluctuation of the suspension pressure in the pipelines, and the position deviation of the two adjacent pipelines can be compensated.
According to the utility model discloses an embodiment still provides a phase transition energy storage formula hot water system's control method for control foretell phase transition energy storage formula hot water system, include:
acquiring an operation mode of a hot water system;
and controlling whether the refrigerant circulation subsystem operates or not according to the operation mode.
Specifically, the operation modes include a heat storage mode and a heat supply mode, when the operation mode is the heat storage mode, the refrigerant circulation subsystem is controlled to operate, that is, the refrigerant circulation subsystem is operated to exchange heat with the suspension, in particular, the phase-change material microcapsules, in the first heat exchange portion 202 at the condensation heat exchange portion 101, the suspension circulates in the suspension circulation subsystem (between the first heat exchange portion 202 and the second heat exchange portion 203) under the action of the circulation pump 201, and through multiple cycles, the heat storage temperature in the phase-change material microcapsules in the suspension reaches the corresponding set temperature, so as to realize the heat storage function, and it can be understood that the hot water system can take water at this time, so as to realize the real-time hot water taking function.
When the operation mode is the heating mode, the refrigerant circulation subsystem is controlled not to operate, and it is understood that this mode is premised on the fact that the heat storage temperature in the phase change material microcapsules in the suspension reaches the corresponding set temperature, and the refrigerant circulation subsystem, i.e., the compressor 102, does not need to be operated.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention. The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (7)
1. The phase-change energy-storage type hot water system is characterized by comprising a refrigerant circulation subsystem and a suspension circulation subsystem, wherein the refrigerant circulation subsystem comprises a condensation heat exchange part (101), the suspension circulation subsystem comprises a circulating pump (201), a first heat exchange part (202) and a second heat exchange part (203) which are sequentially connected through pipelines, heat exchange can be carried out between the first heat exchange part (202) and the condensation heat exchange part (101), a domestic water heat exchanger (301) is arranged in the second heat exchange part (203), heat exchange is realized between the first heat exchange part and the second heat exchange part through suspension, and the suspension circulating in the suspension circulation subsystem is phase-change material microcapsule suspension.
2. The water heating system according to claim 1, wherein the phase change material phase change temperature in the phase change material microcapsules ranges from 40 ℃ to 60 ℃; and/or the circulation pump (201) is a peristaltic pump.
3. The hot water system as claimed in claim 1, wherein the domestic water heat exchanger (301) comprises one of a finned tube heat exchanger, a spiral tube heat exchanger, a serpentine tube heat exchanger.
4. The hot water system according to claim 1, characterized in that the suspension circulation subsystem is provided with a filling valve (204), and/or a venting valve (205), and/or a discharge valve (206) in its piping.
5. The water heating system according to claim 1, wherein an expansion pipe (207) is further provided on the piping of the suspension circulation subsystem.
6. The hot water system as claimed in claim 1, characterized in that the second heat exchanging part (203) comprises a tank body, the domestic water heat exchanger (301) being located in the tank body.
7. A hot-water system according to claim 6, characterized in that the tank is provided with a protection valve (208) and/or a pressure detection device (209).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922228984.XU CN211400306U (en) | 2019-12-12 | 2019-12-12 | Phase-change energy-storage type water heating system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922228984.XU CN211400306U (en) | 2019-12-12 | 2019-12-12 | Phase-change energy-storage type water heating system |
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| CN211400306U true CN211400306U (en) | 2020-09-01 |
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| CN201922228984.XU Active CN211400306U (en) | 2019-12-12 | 2019-12-12 | Phase-change energy-storage type water heating system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111043759A (en) * | 2019-12-12 | 2020-04-21 | 珠海格力电器股份有限公司 | Phase-change energy-storage type hot water system and control method thereof |
| CN113212100A (en) * | 2021-06-02 | 2021-08-06 | 合肥工业大学 | Pure electric vehicle integrated heat management system and method based on phase change capsules |
-
2019
- 2019-12-12 CN CN201922228984.XU patent/CN211400306U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111043759A (en) * | 2019-12-12 | 2020-04-21 | 珠海格力电器股份有限公司 | Phase-change energy-storage type hot water system and control method thereof |
| CN113212100A (en) * | 2021-06-02 | 2021-08-06 | 合肥工业大学 | Pure electric vehicle integrated heat management system and method based on phase change capsules |
| CN113212100B (en) * | 2021-06-02 | 2022-08-16 | 合肥工业大学 | Pure electric vehicle integrated heat management system and method based on phase change capsules |
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