CN107388337B - distributed efficient energy-saving phase-change heat storage system - Google Patents
distributed efficient energy-saving phase-change heat storage system Download PDFInfo
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- CN107388337B CN107388337B CN201710451617.9A CN201710451617A CN107388337B CN 107388337 B CN107388337 B CN 107388337B CN 201710451617 A CN201710451617 A CN 201710451617A CN 107388337 B CN107388337 B CN 107388337B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D15/00—Other domestic- or space-heating systems
- F24D15/02—Other domestic- or space-heating systems consisting of self-contained heating units, e.g. storage heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
- F24D19/1015—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/08—Electric heater
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/14—Solar energy
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2220/00—Components of central heating installations excluding heat sources
- F24D2220/04—Sensors
- F24D2220/042—Temperature sensors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2220/00—Components of central heating installations excluding heat sources
- F24D2220/04—Sensors
- F24D2220/044—Flow sensors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2220/00—Components of central heating installations excluding heat sources
- F24D2220/04—Sensors
- F24D2220/046—Pressure sensors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2220/00—Components of central heating installations excluding heat sources
- F24D2220/10—Heat storage materials, e.g. phase change materials or static water enclosed in a space
Abstract
The invention relates to a distributed efficient energy-saving phase-change heat storage system which comprises a heat storage loop and an output loop, wherein the heat storage loop consists of a phase-change heat storage main body, a heat exchanger and an electric heater, the heat storage loop comprises a new energy heat supply mode and an electric heating mode, the phase-change heat storage main body and the heat exchanger are connected to form heat storage circulation in the new energy heat supply mode, the phase-change heat storage main body and the electric heater are connected to form heat storage circulation in the electric heating mode, the output loop comprises a direct output mode and an electric heating auxiliary heating mode, an inlet and an outlet of the phase-change heat storage main body are respectively connected with a cold water inlet and a hot water outlet in the direct output mode, and a water inlet of the phase-change heat storage main body is connected with a cold. Compared with the prior art, the invention has the advantages of flexible arrangement, small occupied area, large heat storage capacity, quick and convenient heat storage/utilization, and the like.
Description
Technical Field
The invention relates to a phase change heat storage system, in particular to a distributed efficient energy-saving phase change heat storage system.
Background
At present, the heat supply requirements of residential areas and new rural areas are gradually increased, the burden of traditional boiler equipment is increased, and the defects of complex heat supply pipelines, high energy consumption, inconvenience in maintenance and the like exist to different degrees, so that the defects of long heat supply pipelines, high coal-electricity cost, unstable heat supply and the like are caused.
The traditional household heat storage unit mostly adopts a water tank inner container, has the defects of weak heat storage capacity and large occupied space, and can influence the use after the internal water is repeatedly heated or stored for a long time. Meanwhile, as the sensible heat and the heat storage capacity of the water are small, the resources such as industrial waste heat and solar energy cannot be utilized more fully to achieve the ideal effect of saving energy.
The phase change material is a material that changes phase state (such as solid state to liquid state) with temperature change, and in the phase change process, the phase change material can absorb or release a large amount of heat, called latent heat of phase change, and the temperature in the phase change process is basically unchanged, so that the phase change material can store more heat than water in the same temperature range. At present, the research on phase change heat storage is not mature, and the defects that the phase change material has slow heat conduction, heat exchange tubes buried in the phase change material are not uniformly distributed, the heat exchange efficiency is not high, the designed heat storage amount is too low and the like exist, so that the development and the utilization of a phase change heat storage system are hindered.
looking up the prior related inventions and the utility model patent, the invention patent with the patent application number of CN201210108199.0 discloses a phase change heat storage system, wherein a phase change heat storage material is filled between a heat exchanger and a container to form a heat storage unit, and then at least one heat storage unit is connected in parallel on a heat medium conveying pipeline. The system has small container and heat exchange area, and does not have a special controller for intelligently controlling the input and output of heat. Patent application No. CN201520822183.5 utility model discloses a phase change formula solar water heating system, through solar collector or electric heater heating phase change material. The cold fluid of the system is directly output after sequentially passing through the solar heat collector, the electric heater and the heat storage and heat storage pool, and the residual heat in the system is not recycled after the temperature of the heat storage and heat storage pool is lower than a limit value, so that the energy utilization rate is reduced.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a distributed efficient energy-saving phase-change heat storage system.
The purpose of the invention can be realized by the following technical scheme:
a distributed high-efficiency energy-saving phase-change heat storage system comprises a heat storage loop and an output loop, wherein the heat storage loop consists of a phase-change heat storage main body, a heat exchanger and an electric heater,
The heat storage loop comprises a new energy source heat supply mode and an electric heating mode, in the new energy source heat supply mode, the phase change heat storage main body is connected with the heat exchanger to form heat storage circulation, in the electric heating mode, the phase change heat storage main body is connected with the electric heater to form heat storage circulation,
The output loop comprises a direct output mode and an electric heating auxiliary heating mode, wherein in the direct output mode, an inlet and an outlet of the phase change heat storage main body are respectively connected with a cold water inlet and a hot water outlet, in the electric heating auxiliary heating mode, a water inlet of the phase change heat storage main body is connected with the cold water inlet, and a water outlet is sequentially connected with an electric heater and the hot water outlet.
As a preferred embodiment, the phase change heat storage main body, the heat exchanger and the first circulating pump are sequentially connected to form a heat storage loop, a first three-way valve is further arranged on a pipeline between the phase change heat storage main body and the heat exchanger, and a second three-way valve is further arranged on a pipeline between the first circulating pump and the phase change heat storage main body, wherein the other interface of the first three-way valve is connected with the electric heater, two branches are led out from a water outlet of the electric heater, one of the branches is directly connected with a hot water outlet, the other branch returns to be connected with the phase change heat storage main body, the other interface of the second three-way valve is connected with a cold water pipeline, and the cold water.
As a further preference of the above preferred embodiment, the other branch led out from the water outlet of the electric heater is connected to the water inlet of the second circulating pump of the cold water pipeline, and is returned to the phase change heat storage main body through the second circulating pump.
As a more preferable embodiment of the above-mentioned preferable embodiment, flow control valves are respectively provided on branches of the heat exchanger, the first circulation pump, the hot water outlet, the cold water inlet, and the electric heater connected to the cold water pipeline, and the flow control valves, the first three-way valve, and the second three-way valve are further connected to a PLC controller, and the valves are controlled by the PLC controller to be switched.
As a further preferred of the above more preferred embodiment, temperature sensors are respectively arranged in the phase change heat storage main body, at the inlet and outlet of the phase change heat storage main body and at the outlet of the electric heater, a pressure sensor is further arranged at the outlet of the electric heater, flow sensors are respectively arranged at the outlets of the first circulating pump and the second circulating pump, and the temperature sensors, the pressure sensors and the flow sensors are all feedback-connected to the PLC controller.
As a preferred embodiment, the phase-change heat storage main body comprises at least one heat storage unit, the heat storage unit comprises a shell, an inner container, a heat exchange tube set, a metal corrugated fin set and a TP valve, wherein the shell and the inner container are made of stainless steel, a heat insulation material is filled between the shell and the inner container, the phase-change material is filled between the heat exchange pipeline and the metal corrugated fin, and the TP valve is installed on a drainage pipeline of the heat storage unit and can be automatically opened when the internal pressure and temperature of the heat reservoir are too high, so that the safety protection effect is achieved.
As a more preferable aspect of the above preferable embodiment, the phase-change heat storage main body includes a plurality of heat storage units connected in series and parallel, wherein the inlet main pipeline is divided into water inlet branches connected to the water inlet of each heat storage unit, the water outlet of each heat storage unit is also connected to the outlet main pipeline through a pipeline confluence, a pipeline switching valve is further disposed between the water outlets of two adjacent heat storage units, the branch led out from the pipeline switching valve is connected to the water inlet branch of the next heat storage unit, and a blocking valve for adjusting the series and parallel states of the heat storage units is further disposed on the water inlet branch.
As a further preference of the above more preferred embodiment, a water inlet valve is further provided at the water inlet of the heat storage unit.
Compared with the prior art, the invention has the following advantages:
(1) The phase-change material with proper phase-change temperature and high heat storage density is selected to replace medium water as the filling material of the heat storage device, so that the space volume of the device can be effectively reduced, the heat storage efficiency is improved, and the heat is conveniently taken and put.
(2) The heat storage main body can adjust the number and the series-parallel connection of the heat storage units according to the number of users, heat demand, required temperature and the like. The PLC controller is adopted to adjust all parts of the system, so that proper water temperature and water quantity can be obtained, and the system is more intelligent.
(3) Multiple heat supply sources can be selected, solar heat can be used for heat storage under the condition that solar energy is sufficient, and electric heating can be directly used under the insufficient condition. When the heat released by the heat storage main body is insufficient, the temperature of the output loop is less than a set value but higher than the ambient temperature, and at the moment, the electric heating auxiliary heating can be turned on to utilize the heat, so that the efficiency is improved, and the electric charge is saved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of series and parallel connection of heat storage units of the phase change heat storage body of the present invention;
In the figure, 1 is a phase-change heat storage main body, 1-1 is a heat exchange tube set, 1-2 is an inner container, 1-3 is a shell, 1-4 is a phase-change material, 1-5 is a TP valve, 2 is an electric heater, 3-1, 3-2, 3-3 and 3-4 are temperature sensors, 4-a heat exchanger, 5-1, 5-2 and 5-3 are flow control valves, 6-a PLC controller, 7-1 is a first three-way valve, 7-2 is a second three-way valve, 8 is a hot water output port, 9 is a cold water input port, 10-1 is a first circulating pump, 10-2 is a second circulating pump, 11-1 and 11-2 are flow sensors, 12-a pressure sensor, 100-a heat storage unit, 200-a water inlet valve and 300-a pipeline switching valve, 401-inlet main, 402-outlet main.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
A distributed high-efficiency energy-saving phase-change heat storage system is shown in figure 1 and comprises a heat storage loop and an output loop, wherein the heat storage loop consists of a phase-change heat storage main body 1, a heat exchanger 4 and an electric heater 2, the heat storage loop comprises a new energy heating mode and an electric heating mode, in a new energy heat supply mode, the phase change heat storage body 1 and the heat exchanger 4 are connected to form a heat storage cycle, in the electric heating mode, the phase change heat storage body 1 and the electric heater 2 are connected and constitute a heat storage cycle, the output loop comprises a direct output mode and an electric heating auxiliary heating mode, in the direct output mode, the inlet and outlet of the phase-change heat storage body 1 are respectively connected with a cold water input port 9 and a hot water output port 8, in the electric heating auxiliary heating mode, a water inlet of the phase change heat storage main body 1 is connected with a cold water inlet 9, and a water outlet is sequentially connected with an electric heater 2 and a hot water outlet 8.
As a preferred embodiment, the phase change heat storage body 1, the heat exchanger 4 and the first circulation pump 10-1 are sequentially connected to form a loop, a first three-way valve 7-1 is further arranged on a pipeline between the phase change heat storage body 1 and the heat exchanger 4, a second three-way valve 7-2 is further arranged on a pipeline between the first circulation pump 10-1 and the phase change heat storage body 1, wherein the other interface of the first three-way valve 7-1 is connected with the electric heater 2, two branches are led out from a water outlet of the electric heater 2, one branch is directly connected with the hot water outlet 8, the other branch is connected with the phase change heat storage body 1 in a returning manner, the other interface of the second three-way valve 7-2 is connected with the cold water pipeline, and the second circulation pump 10-2 is arranged on the. As a more preferable mode of the above preferable embodiment, the other branch led out from the water outlet of the electric heater 2 is connected to the water inlet of the second circulation pump 10-2 of the cold water pipeline, and returns to the phase change heat storage main body 1 through the second circulation pump 10-2; flow control valves are respectively arranged on branches of the heat exchanger 4, a first circulating pump 10-1, a hot water output port 8, a cold water input port 9 and a cold water pipeline connected with the electric heater 2, the flow control valves, the first three-way valve 7-1 and the second three-way valve 7-2 are also connected with the PLC 6, and the PLC 6 controls the on-off of each valve to realize pipeline switching; temperature sensors are respectively arranged in the phase change heat storage main body 1, the inlet and outlet of the phase change heat storage main body 1 and the outlet of the electric heater 2, a pressure sensor 12 is further arranged at the outlet of the electric heater 2, flow sensors are respectively arranged at the water outlets of the first circulating pump 10-1 and the second circulating pump 10-2, and the temperature sensors, the pressure sensors 12 and the flow sensors are all connected with the PLC 6 in a feedback mode.
As a preferred embodiment, the phase-change heat storage body 1 comprises at least one heat storage unit 100, and the heat storage unit 100 comprises a shell 1-3, an inner container 1-2, a heat exchange tube set 1-1, a metal corrugated fin set and a TP valve 1-5, wherein the shell 1-3 and the inner container 1-2 are made of stainless steel, a heat insulation material is filled between the shell 1-3 and the inner container 1-2, the phase-change material 1-4 is filled between the heat exchange tube and the metal corrugated fin, and the TP valve 1-5 is installed on a drainage tube of the heat storage unit 100, and is automatically opened when the internal pressure and temperature of the heat reservoir are too high, so as to achieve a safety protection effect. As a more preferable embodiment, referring to fig. 2, the phase-change heat storage main body 1 includes a plurality of heat storage units 100 connected in series and parallel, wherein an inlet main pipeline 401 is divided into inlet branches respectively connected to the inlets of each heat storage unit 100, the outlets of each heat storage unit 100 are further connected to an outlet main pipeline 402 through pipeline confluence, a pipeline switching valve 300 is further disposed between the outlets of two adjacent heat storage units 100, a branch led out from the pipeline switching valve 300 is connected to the inlet branch of the next heat storage unit 100, and a blocking valve for adjusting the series and parallel states of the heat storage units 100 is further disposed on the inlet branch. As a further preference of the above more preferred embodiment, the water inlet of the heat storage unit 100 is further provided with a water inlet valve 200.
Example 1
As shown in figure 1, the phase-change heat storage device comprises a phase-change heat storage main body 1, a heat storage loop, an output loop and a PLC (programmable logic controller), wherein the PLC 6 is connected with temperature sensors 3-1, 3-2, 3-3 and 3-4, flow sensors 11-1 and 11-2 and a pressure sensor 12, and is used for monitoring temperature and pressure changes and controlling the flow and switching of pipelines. Wherein, the single or a plurality of heat storage units 100 used in the phase-change heat storage main body 1 can be controlled by series-parallel connection and a valve; an electric heating mode and a new energy heating mode can be used under the heat storage loop; the output loop can directly output and assist the electric heating output.
The following will specifically describe 2 heat storage modes: as shown in fig. 1, when new energy such as solar energy is used for heat supply, a first three-way valve 7-1 and a second three-way valve 7-2 are respectively communicated with a1-C1 and a2-C2, a medium obtains heat from a heat exchanger 4, enters a phase change heat storage body 1 through a flow control valve 5-1, a first circulating pump 10-1, a flow sensor 11-1 and a temperature sensor 3-2 for heat storage, then returns to the heat exchanger 4 through the temperature sensor 3-3 to complete one cycle, and continuously stores the heat into the phase change heat storage body 1 through the cycle; when solar energy is insufficient, an electric heating mode is used, the first three-way valve 7-1 and the second three-way valve 7-2 are respectively communicated with A1, B1, A2 and B2, the flow control valves 5-2 and 5-3 are closed, the flow control valve 5-4 is opened, a medium with a lower temperature comes out of the phase change heat storage main body 1, is heated by the electric heater 2, and then enters the phase change heat storage main body 1 through the flow control valves 5-4, the second circulating pump 10-2, the flow sensor 11-2 and the temperature sensor 3-2 to store heat to complete a cycle, and the heat is stored in the heat storage main body continuously through the cycle.
the output mode will be described in detail below: as shown in fig. 1, when a user needs to use heat, a first three-way valve 7-1 and a second three-way valve 7-2 are respectively communicated with a1, B1, a2 and B2, flow control valves 5-2 and 5-3 are opened, a flow control valve 5-4 is closed, cold water enters from a cold water inlet 9, sequentially passes through the flow control valves 5-3, a second circulating pump 10-2, a flow sensor 11-2 and a temperature sensor 3-2, enters a phase change heat storage body 1 to be heated, sequentially passes through the temperature sensor 3-3, an electric heater 2 (if the temperature is lower than a user set value, electric heating is turned on for auxiliary heating, otherwise, electric heating is not turned on), the temperature sensor 3-4 and a pressure sensor 12, and finally flows out from a hot water outlet 8.
The following will specifically describe the connection condition of the series and parallel connection inside the heat storage main body: referring to fig. 2, the heat storage body 1 may have a single heat storage unit 100 therein, or may have a plurality of heat storage units 100 connected in series and parallel. When the pipeline switching valve 300 is communicated with the pipelines a and b, the pipelines are in a parallel mode at this time, a medium flows in from the inlet main pipeline 401, then enters each heat storage unit 100 for heat exchange by being shunted to each water inlet branch (at this time, each water inlet branch is communicated), and then converges and concentrates to the outlet main pipeline 402 to flow out; when the pipeline switching valve 300 is connected with the pipelines a and c, the pipelines are in a series mode (at this time, the stop valves on the water inlet branches are closed), a medium flows in from the inlet main pipeline 401, then sequentially enters the heat storage units 100 for heat exchange, and finally flows out from the outlet main pipeline 402, and the inlet and outlet fluids can obtain a large temperature difference in the mode. When the heat supply of the heat source can not satisfy the requirement of a plurality of heat storage units, the heat storage unit 100 can be disconnected only by closing the valve 200 corresponding to the water inlet of the heat storage unit 100, so that the quantity of the heat storage units 100 which are effectively utilized is adjusted.
The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (6)
1. A distributed high-efficiency energy-saving phase-change heat storage system is characterized by comprising a heat storage loop and an output loop, wherein the heat storage loop consists of a phase-change heat storage main body, a heat exchanger and an electric heater,
The heat storage loop comprises a new energy source heat supply mode and an electric heating mode, in the new energy source heat supply mode, the phase change heat storage main body is connected with the heat exchanger to form heat storage circulation, in the electric heating mode, the phase change heat storage main body is connected with the electric heater to form heat storage circulation,
The output loop comprises a direct output mode and an electric heating auxiliary heating mode, wherein in the direct output mode, an inlet and an outlet of the phase change heat storage main body are respectively connected with a cold water input port and a hot water output port, in the electric heating auxiliary heating mode, a water inlet of the phase change heat storage main body is connected with the cold water input port, and a water outlet of the phase change heat storage main body is sequentially connected with an electric heater and the hot water output port;
The phase change heat storage main body, the heat exchanger and the first circulating pump are sequentially connected to form a loop, a first three-way valve is further arranged on a pipeline between the phase change heat storage main body and the heat exchanger, a second three-way valve is further arranged on a pipeline between the first circulating pump and the phase change heat storage main body, the other interface of the first three-way valve is connected with the electric heater, two branches are led out from a water outlet of the electric heater, one of the two branches is directly connected with a hot water outlet, the other branch returns to be connected with the phase change heat storage main body, the other interface of the second three-way valve is connected with a cold water pipeline, and a second circulating pump;
The other branch led out from the water outlet of the electric heater is connected to the water inlet of a second circulating pump of the cold water pipeline and returns to the phase change heat storage main body through the second circulating pump.
2. The distributed efficient energy-saving phase-change heat storage system according to claim 1, wherein flow control valves are respectively arranged on branches of the heat exchanger, the first circulating pump, the hot water outlet, the cold water inlet, and the electric heater connected to the cold water pipeline, and the flow control valves, the first three-way valve and the second three-way valve are further connected with a PLC controller, and the valves are controlled to be switched by the PLC controller.
3. The distributed efficient energy-saving phase-change heat storage system according to claim 2, wherein temperature sensors are respectively arranged in the phase-change heat storage main body, at the inlet and outlet of the phase-change heat storage main body and at the outlet of the electric heater, a pressure sensor is further arranged at the outlet of the electric heater, flow sensors are respectively arranged at the outlets of the first circulating pump and the second circulating pump, and the temperature sensors, the pressure sensors and the flow sensors are all connected with a PLC (programmable logic controller) in a feedback manner.
4. The distributed efficient energy-saving phase-change heat storage system according to claim 1, wherein the phase-change heat storage body comprises at least one heat storage unit, and the heat storage unit comprises a shell, an inner container, a heat exchange tube set, a metal corrugated fin set and a TP valve, wherein the shell and the inner container are made of stainless steel, a heat insulation material is filled between the shell and the inner container, the phase-change material is filled between the heat exchange pipeline and the metal corrugated fin, and the TP valve is installed on a drainage pipeline of the heat storage unit.
5. the distributed efficient energy-saving phase-change heat storage system according to claim 4, wherein the phase-change heat storage main body comprises a plurality of heat storage units connected in series and parallel, wherein an inlet main pipeline is divided into an inlet branch and an outlet branch which are respectively connected with a water inlet of each heat storage unit, a water outlet of each heat storage unit is also connected with an outlet main pipeline through pipeline confluence, a pipeline switching valve is further arranged between water outlets of two adjacent heat storage units, a branch led out from the pipeline switching valve is connected to an inlet branch of the next heat storage unit, and a cut-off valve used for adjusting the series and parallel states of the heat storage units is further arranged on the inlet branch.
6. The distributed efficient energy-saving phase-change heat storage system as claimed in claim 5, wherein a water inlet valve is further arranged at the water inlet of the heat storage unit.
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| CN108240675A (en) * | 2018-02-13 | 2018-07-03 | 天津大学 | A kind of coal changes TV university capacity low temperature phase change heat reservoir and central heating system |
| CN210154395U (en) * | 2019-01-21 | 2020-03-17 | 深圳市爱能森科技有限公司 | Phase-change material heat storage device |
| CN115490383B (en) * | 2022-09-27 | 2023-07-14 | 国能神东煤炭集团有限责任公司 | Membrane distillation device |
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| CN102242698A (en) * | 2010-05-11 | 2011-11-16 | 北京智慧剑科技发展有限责任公司 | Distributed-type heat and power cogeneration set capable of accumulating energy and heat |
| CN203719234U (en) * | 2014-01-27 | 2014-07-16 | 艾绍奎 | Distributed multi-fuel heat source auxiliary solar integration refrigeration heating system |
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