CN220169552U - Water tank for heat pump heat storage - Google Patents
Water tank for heat pump heat storage Download PDFInfo
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- CN220169552U CN220169552U CN202320419494.1U CN202320419494U CN220169552U CN 220169552 U CN220169552 U CN 220169552U CN 202320419494 U CN202320419494 U CN 202320419494U CN 220169552 U CN220169552 U CN 220169552U
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- heat pump
- tank
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 168
- 238000005338 heat storage Methods 0.000 title claims abstract description 34
- 238000009825 accumulation Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- 230000004888 barrier function Effects 0.000 claims 2
- 230000017525 heat dissipation Effects 0.000 abstract description 15
- 238000002955 isolation Methods 0.000 abstract description 13
- 238000009792 diffusion process Methods 0.000 abstract description 2
- 239000003507 refrigerant Substances 0.000 description 10
- 239000007788 liquid Substances 0.000 description 7
- 230000006872 improvement Effects 0.000 description 6
- 239000012071 phase Substances 0.000 description 6
- 230000007704 transition Effects 0.000 description 4
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000009834 vaporization Methods 0.000 description 3
- 230000008016 vaporization Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000012808 vapor phase Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
Classifications
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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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- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The utility model relates to the field of water tanks, and discloses a water tank for heat pump heat storage, which comprises a tank body, a water isolation plate, a high-temperature water inlet pipe, a high-temperature water outlet pipe, a low-temperature water inlet pipe and a low-temperature water outlet pipe, wherein the water isolation plate is provided with a plurality of water isolation plates which are horizontally arranged on the inner side of the tank body, a water guide plate is arranged between two adjacent water isolation plates and is used for guiding water flow to longitudinally separate water bodies, support pieces fixedly connected with the side walls of the tank body are arranged on the lower sides of the water isolation plates, the vertical non-natural convection diffusion of the water bodies is realized, the heat pump heat storage is realized, the water body is output from the water tank to maintain the continuous low temperature during heat supply, the heat pump energy efficiency ratio is furthest improved during heat supply, the heat dissipation power of user side heat dissipation equipment is ensured, and the power consumption of heat medium circulation is reduced.
Description
Technical Field
The utility model relates to the field of water tanks, in particular to a water tank for heat pump heat storage.
Background
A heat pump is a device that transfers low-quality heat energy from a low-temperature region to a high-temperature region as high-quality heat energy to be released, that is, a heat pump is an energy transfer worker, and is a high-efficiency energy device because high-quality energy (electric energy W) consumed by transfer energy is smaller than energy Q2 transferred from the low-temperature region and energy Q1 released in the high-temperature region.
The heat pump transfers low-quality heat energy from a low-temperature area to a high-temperature area as high-quality heat energy for release, and the low-quality heat energy is realized through liquid vaporization and gaseous condensation circulation of refrigerant in the heat pump.
The heat storage water tank water body generates longitudinal heat conduction of the water body, the flowing mixed temperature of the water body is generated, the backwater enters the water tank during heat supply to cause the overall temperature of the water tank water body to be reduced, the hot water output temperature is reduced, and the heat dissipation equipment at the user side cannot achieve the design heat dissipation power; therefore, the water tank for heat pump heat accumulation reduces the longitudinal heat conduction of the water body, avoids the flowing and mixing temperature of the water body, and has important significance in maintaining the continuous low temperature of the water body extracted from the water tank by the heat pump heat accumulation and the continuous high temperature of the water body output from the water tank during heat supply.
Disclosure of Invention
The utility model provides a water tank for heat pump heat storage, which aims to solve the technical problems that the heat pump heat storage can be used for extracting water from the water tank and maintaining continuous low temperature, and the water body can be output from the water tank to maintain continuous high temperature during heat supply, so that the energy efficiency ratio of the heat pump is improved.
The utility model is realized by adopting the following technical scheme: the utility model provides a water tank for heat pump heat accumulation, includes box, water-stop sheet, high temperature inlet tube, high temperature outlet pipe, low temperature inlet tube, low temperature outlet pipe, the water-stop sheet is provided with a plurality of and level setting in the box inboard, adjacent two be provided with the water guide plate between the water-stop sheet, the water guide plate is used for guiding rivers to separate the water with vertically, a plurality of the downside of water-stop sheet all is provided with the support piece with box lateral wall fixed connection.
Through the technical scheme, the water body is longitudinally separated, the longitudinal heat conduction of the water body is reduced, the flowing and mixing temperature of the water body is avoided, the energy efficiency ratio of heat pump heat accumulation is ensured, and the high-efficiency heat supply capability of high-temperature water body heat supply is sustained.
As a further improvement of the scheme, the water guide plates between two adjacent water stop plates are arranged in a staggered mode and have overlapping parts, and a plurality of water guide plates are arranged vertically.
As a further improvement of the scheme, the supporting piece and the box body are of a connecting strip structure, and the height of the connecting strip is 2/3-3/4 of the interval between two adjacent water stop plates.
As a further improvement of the scheme, the water guide plate is adhered or welded on the water stop plate and is made of the same material as the water stop plate.
As a further improvement of the scheme, the water stop plates are made of low heat conduction materials, are round with notches tangential to the inner wall of the box body, and are arranged in a reverse symmetry mode.
As a further improvement of the scheme, the height of the water guide plate is 2/3-3/4 of the interval between two adjacent water stop plates, and the support piece and the water guide plate form a horizontal water flow guide mechanism.
Compared with the prior art, the utility model has the beneficial effects that:
the water tank realizes that the water body is diffused along the vertical natural convection, the heat pump heat storage is realized, the water body is extracted from the water tank to maintain the continuous low temperature, the water body is output from the water tank to maintain the continuous high temperature during heat supply, the heat pump energy efficiency ratio is improved to the maximum extent during heat storage, the heat radiation power of the user side heat radiation equipment is ensured during heat supply, and the power consumption of heat medium circulation is reduced.
The heat pump heat storage water tank has the characteristics of simple structure, convenience in use, high heat pump heat storage energy efficiency ratio, reduction in operation cost and energy consumption, continuous heating of the water body during heat supply, improvement in heat supply efficiency and the like.
Drawings
Fig. 1 is a schematic front sectional view of a water tank for heat storage of a heat pump according to the present utility model;
fig. 2 is a schematic top sectional view of a water tank for heat storage of a heat pump according to the present utility model.
Main symbol description:
1. a case; 2. a water-stop plate; 3. a support; 4. a water guide plate; 5. a high temperature water inlet pipe; 6. a high-temperature water outlet pipe; 7. a low temperature water inlet pipe; 8. and a low-temperature water outlet pipe.
Detailed Description
The present utility model will be further described with reference to the accompanying drawings and detailed description, wherein it is to be understood that, on the premise of no conflict, the following embodiments or technical features may be arbitrarily combined to form new embodiments.
The heat pump is used as a device for conveying low-quality heat energy from a low-temperature area to a high-temperature area as high-quality heat energy for releasing, and the heat quantity Q1 released in the high-temperature area is equal to the sum of the heat quantity Q2 conveyed from the low-temperature area and high-quality energy (electric energy) W consumed by conveying energy, namely:
Q1= Q2+W （1）
the ratio of Q1 to W is defined as the heat pump energy efficiency ratio COP, i.e.:
COP= Q1/W （2）
the heat Q1 released by the heat pump in the high temperature area and the heat Q2 conveyed from the low temperature area are energy movement realized through circulation between gaseous condensation and liquid vaporization of the refrigerant in the heat pump, and if the liquid vaporization and gaseous condensation circulation of the refrigerant are in an ideal gas working state, the heat pump COP calculation formula is as follows:
COP= Q1/W
= Q1/(Q1-Q2)
=T1/(T1-T2) （3）
wherein: COP: heat pump energy efficiency ratio under ideal state
W: compressor pair gas (work done by refrigerant vapor compressed to liquid state)
Q1: the refrigerant generates heat released by gas-liquid cooling phase change in a high-temperature and high-pressure area
Q2: heat absorbed by liquid-vapor phase change of refrigerant in low temperature and low pressure area
T1: the refrigerant is at the temperature corresponding to the phase transition of the gas-liquid in the high-temperature and high-pressure area
T2: the refrigerant is at a temperature corresponding to the liquid-vapor phase transition in the low temperature and low pressure region.
As can be seen from the formula (3), the heat pump energy efficiency ratio in an ideal state depends on the temperature difference between a high temperature region (the temperature corresponding to the phase transition of the refrigerant in the high temperature and high pressure region and the liquid-liquid cooling phase) and a low temperature region (the temperature corresponding to the phase transition of the refrigerant in the low temperature and low pressure region and the liquid-vapor evaporation phase). Therefore, the energy efficiency ratio of the heat pump for energy transfer under the condition of small temperature difference can be greatly reduced. From the above analysis, it is clear that in order to increase the heat pump energy efficiency ratio COP in heat pump applications, the heat pump output temperature of the heat medium should be reduced as low as possible, and the environmental energy medium with a higher temperature should be utilized as much as possible.
In order to balance the system and reasonably utilize peak-valley electricity spread resources, the large heat pump heating system is provided with a heat storage water tank, the water tank water body is heated in a stepping way by adopting a small temperature difference with high energy efficiency ratio when the heat pump stores heat, if the water tank water body cannot prevent longitudinal heat conduction, the heat pump extracts water body from the water tank to improve the temperature, and the T2 improves the heat pump energy efficiency ratio to be reduced, corresponding to the formula (3).
When heating, the heat dissipation capacity formula of the hot water as the heat supply medium at the user is as follows:
Q=（T1-T2）·V （4）
wherein: q: heat dissipation capacity of user
T1: output temperature of thermal medium
T2: return temperature of thermal medium
V: flow of the thermal medium.
As can be seen from the formula (4), under the same heat demand condition (i.e. the heat dissipation Q of the user side is unchanged), the higher the output temperature T1 of the heat medium is, the lower the flow V of the heat medium is, and the lower the power consumption of the heat medium is.
On the other hand, the heat dissipation device condition of the user side satisfies the following formula:
Q=KS·（T1-T2） （5）
wherein: q: design heat dissipation power of user
K: heat exchange constant of radiator for user terminal
S: heat exchange area of radiator for user terminal
T1: design of output temperature of thermal medium
T2: design of the return temperature of the thermal medium
As can be seen from the formula (5), if the heat storage water tank water body generates longitudinal heat conduction of the water body, the flowing mixed temperature of the water body is generated, and when the heat is supplied, backwater enters the water tank to cause the overall temperature of the water body of the water tank to be reduced, the output temperature of the hot water is reduced, and the heat dissipation equipment at the user side cannot achieve the design heat dissipation power.
Therefore, the water tank for heat pump heat accumulation reduces the longitudinal heat conduction of the water body, avoids the flowing and mixing temperature of the water body, and has important significance in maintaining the continuous low temperature of the water body extracted from the water tank by the heat pump heat accumulation and the continuous high temperature of the water body output from the water tank during heat supply.
Example 1:
referring to fig. 1-2, a water tank for heat pump heat storage in this embodiment includes a tank body 1, a water-stop plate 2, a high-temperature water inlet pipe 5, a high-temperature water outlet pipe 6, a low-temperature water inlet pipe 7, and a low-temperature water outlet pipe 8, wherein the water-stop plate 2 is provided with a plurality of water-guide plates 4 horizontally arranged inside the tank body 1, two adjacent water-stop plates 2 are provided with water-guide plates 4 therebetween, the water-guide plates 4 are used for guiding water flow to separate water bodies longitudinally, the lower sides of the water-stop plates 2 are provided with supporting pieces 3 fixedly connected with the side walls of the tank body 1, the water bodies can be separated longitudinally through the supporting pieces 3 and the water-guide plates 4, the longitudinal heat conduction of the water bodies is reduced, the flowing mixed temperature of the water bodies is avoided, the energy efficiency ratio of heat pump heat storage is ensured, and the high-efficiency heat supply capability of continuous water body heat supply is ensured. The water guide plates 4 between two adjacent water isolation plates 2 are arranged in a staggered mode and are mutually overlapped, the water guide plates 4 are vertically arranged, the supporting piece 3 and the box body 1 are of a connecting strip structure, the connecting strip height is 2/3-3/4 of the interval between the two adjacent water isolation plates 2, the water guide plates 4 are adhered or welded on the water isolation plates 2 and are made of the same material as the water isolation plates 2, the water isolation plates 2 are resin plates, PP plates and PVC plates, preferably PVC plates, the water isolation plates 2 are round with gaps tangential to the inner wall of the box body 1, the gaps of the water isolation plates 2 are arranged in a reverse symmetry mode, the height of each water guide plate 4 is 2/3-3/4 of the interval between the two adjacent water isolation plates 2, the supporting piece 3 and the water guide plates 4 form a horizontal water flow diversion mechanism, the vertical non-natural convection diffusion of the water body is realized, the heat pump heat storage is maintained at a continuous low temperature from the water tank, the continuous high temperature is maintained from the output water tank during heat supply, the heat pump energy efficiency ratio is improved, the heat pump is ensured during heat supply, the heat dissipation medium heat dissipation power consumption of a heat dissipation device is reduced, and the heat dissipation medium is circulated.
The implementation principle of the water tank for heat pump heat storage in the embodiment of the utility model is as follows: when the heat storage is started, the whole temperature of the water tank is 40 ℃, low-temperature water is extracted from the bottom of the high-temperature heat storage water tank body 1 through the low-temperature water outlet pipe 8, is sent to the heat pump unit to exchange heat and raise the temperature by 5 ℃ to 45 ℃, then returns from the high-temperature water inlet pipe 5 at the top of the high-temperature heat storage water tank body 1, the returned hot water with the temperature raised by 5 ℃ to 45 ℃ gradually advances downwards, the low-temperature water is extracted to the bottom of the tank body 1 to 45 ℃, and the heat pump in the process completes the water temperature of the water body at 40 ℃ to 45 ℃, so that the heat pump has extremely high energy efficiency ratio. The heat storage water tank is continuously subjected to temperature gradient progressive temperature rise to the temperature of 75 ℃ when the low-temperature water is pumped from the bottom of the high-temperature heat storage water tank body 1, the maximum heat storage is realized, and the high energy efficiency ratio state of the heat pump is maintained in the whole process. When the heat supply is started, the whole temperature of the water tank is 75 ℃, the water is conveyed to a user end from the top of the high-temperature heat storage water tank body 1 through the high-temperature water outlet pipe 6, after heat exchange, 40 ℃ low-temperature water returns from the low-temperature water inlet pipe 7 at the bottom of the high-temperature heat storage water tank body 1, the low-temperature water flows to the top at 40 ℃, the total heat storage quantity is basically output at high temperature, and the whole heat supply process is kept in a high-efficiency state.
The above embodiments are only preferred embodiments of the present utility model, and the scope of the present utility model is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present utility model are intended to be within the scope of the present utility model as claimed.
Claims (6)
1. The utility model provides a water tank for heat pump heat accumulation, its characterized in that, including box (1), water-stop sheet (2), high temperature inlet tube (5), high temperature outlet pipe (6), low temperature inlet tube (7) and low temperature outlet pipe (8), water-stop sheet (2) are provided with a plurality of and the level sets up in box (1) inboard, adjacent two be provided with water guide plate (4) between water-stop sheet (2), water guide plate (4) are used for guiding rivers to separate the water with vertically, a plurality of the downside of water-stop sheet (2) all is provided with support piece (3) with box (1) lateral wall fixed connection.
2. A water tank for heat pump heat storage according to claim 1, wherein the water guide plates (4) between two adjacent water stop plates (2) are arranged alternately and have overlapping portions with each other, and a plurality of the water guide plates (4) are arranged vertically.
3. A water tank for heat pump heat storage as claimed in claim 1, wherein the supporting member (3) and the tank body (1) are of a connecting strip structure, and the height of the connecting strip is 2/3-3/4 of the interval between two adjacent water stop plates (2).
4. The water tank for heat pump heat storage according to claim 1, wherein the water-stop plates (2) are made of low heat conduction materials, the water-stop plates (2) are round with notches tangential to the inner wall of the tank body (1), and the notches of the water-stop plates (2) are arranged in a reverse symmetry mode.
5. A tank for heat storage of a heat pump according to claim 1, characterized in that the water guiding plate (4) is glued or welded to the water barrier (2) and is of the same material as the water barrier (2).
6. A water tank for heat pump heat storage as claimed in claim 1, wherein the height of the water guide plate (4) is 2/3-3/4 of the interval between two adjacent water stop plates (2), and the support (3) and the water guide plate (4) form a horizontal water flow guide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320419494.1U CN220169552U (en) | 2023-03-08 | 2023-03-08 | Water tank for heat pump heat storage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320419494.1U CN220169552U (en) | 2023-03-08 | 2023-03-08 | Water tank for heat pump heat storage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220169552U true CN220169552U (en) | 2023-12-12 |
Family
ID=89052251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320419494.1U Active CN220169552U (en) | 2023-03-08 | 2023-03-08 | Water tank for heat pump heat storage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220169552U (en) |
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2023
- 2023-03-08 CN CN202320419494.1U patent/CN220169552U/en active Active
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