CN212132657U - Combined heating system for different heating temperature requirements in alpine regions - Google Patents
Combined heating system for different heating temperature requirements in alpine regions Download PDFInfo
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- CN212132657U CN212132657U CN201921746313.6U CN201921746313U CN212132657U CN 212132657 U CN212132657 U CN 212132657U CN 201921746313 U CN201921746313 U CN 201921746313U CN 212132657 U CN212132657 U CN 212132657U
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Abstract
The utility model provides a combined heating system for different heat supply temperature requirements in alpine regions, which comprises a solar heat source, a heat storage water tank, a plate type heat exchanger group and a complementary heat source, wherein the heat source side of the heat storage water tank is connected with the solar heat source through a pipeline; the output side of the heat storage water tank is connected with the user side through a plate type heat exchanger group; the input end of the complementary heat source is connected with the water taking well through a pipeline; the output end of the complementary heat source is connected in parallel between the output side of the heat storage water tank and the connecting pipeline of the user side through a pipeline. The utility model discloses can realize that solar thermal energy source, complementary heat source alone operation or the mode of joint operation heat, can solve the problem that the water source heat pump set operation efficiency is low and the system totality operation energy consumption is high among the prior art, have energy-conserving efficient advantage.
Description
Technical Field
The utility model relates to a heating system field relates to a combined type heating system that is used for different heating temperature demands in alpine region very much.
Background
Currently, the forms of systems based on solar energy and water source heat pump combined heating actually used in alpine regions (high altitude and cold regions) mainly include the following:
solar combined heating system with water source heat pump connected to heat storage water tank
The system consists of a solar heat collecting system (comprising a heat collecting circulation, a heat storage circulation and a heat dissipation circulation), a complementary heat source system and a user side heating system. The hot water that solar energy collection system produced stores the heat in heat storage water tank behind the plate heat exchanger, and user side heating system obtains the required heat load of heating from heat storage water tank. This system has the following problems: 1) the effective heat utilization efficiency of solar energy is not high; 2) the energy consumption of the system is high; 3) for the heat exchange side of the water source heat pump, an underground water source needs to be extracted all the time to serve as a heat exchange heat source of the evaporator, and the energy consumption of the water pump is high; meanwhile, the pumping amount of underground water is too large, and certain influence is caused on the underground water body.
Heating system with water source heat pump and heat storage water tank connected in series at tail end
The system consists of a solar heat collecting system (comprising a heat collecting circulation, a heat storage circulation and a heat dissipation circulation), a complementary heat source system and a user side heating system. Hot water generated by the solar heat collection system is stored in the heat storage water tank after passing through the plate heat exchanger, and the complementary heat source and the heat storage water tank are connected in series to be connected into a tail end pipe network. The system can realize that the heat storage water tank and the complementary heat source respectively and independently supply heat to the user side, and when the temperature of the heat storage water tank does not reach the heating temperature of the user side, a series heating system can be formed, and the temperature is increased again by the complementary heat source to meet the heating requirement. The system can realize the maximum utilization of solar energy, but has more complex control and is suitable for projects with high management level and moderate area. For the heat exchange side of the water source heat pump, an underground water source needs to be extracted all the time to serve as a heat exchange heat source of the evaporator, and the energy consumption of the water pump is high; meanwhile, the pumping amount of underground water is too large, and certain influence is caused on the underground water body.
Water source heat pump and heat storage water tank are parallelly connected and are connected into terminal heating system
The system consists of a solar heat collecting system (comprising a heat collecting circulation, a heat storage circulation and a heat dissipation circulation), a complementary heat source system and a user side heating system. Hot water generated by the solar heat collection system passes through the plate heat exchanger and then stores heat in the heat storage water tank, and the complementary heat source and the heat storage water tank are connected into a tail end pipe network in parallel. When the temperature of the heat storage water tank meets the heating temperature requirement, the heat storage water tank independently supplies heat to the user side, otherwise, the complementary heat source independently supplies heat to the user side. The system is simple to control and is suitable for projects with low management level and moderate area. But the solar energy utilization rate is lower; for the heat exchange side of the water source heat pump, an underground water source needs to be extracted all the time to serve as a heat exchange heat source of the evaporator, and the energy consumption of the water pump is high; meanwhile, the pumping amount of underground water is too large, and certain influence is caused on the underground water body.
Therefore, the water source heat pump unit in the prior art is low in operation energy efficiency, and the total operation energy consumption of the system is high.
Disclosure of Invention
In order to solve the problem that the water source heat pump unit among the prior art operating efficiency is low and the system's totality operation energy consumption is high, the utility model provides a combined type heating system for alpine region's different heating temperature demands.
In order to realize the purpose, the utility model discloses a technical scheme be:
the combined heating system comprises a solar heat source 1, a heat storage water tank 2, a plate type heat exchanger group 3 and a complementary heat source 4, wherein the solar heat source 1 is connected with the heat storage side of the heat storage water tank 2 through a pipeline, one output side of the heat storage water tank 2 is connected with a user side 5 through the plate type heat exchanger group 3, and the other output side of the heat storage water tank 2 is connected with an evaporator side of the complementary heat source 4 after heat exchange is carried out through the plate type heat exchanger group 3; the evaporator side of the complementary heat source 4 exchanges heat with underground water through a pipeline, and the condenser side of the output end of the complementary heat source 4 is connected in parallel between the output side of the heat storage water tank 2 and the connecting pipeline of the user side 5 through a pipeline;
controllable electric two-way valves are arranged on pipelines between the heat storage side of the heat storage water tank 2 and the solar heat source 1, pipelines between the plate type heat exchanger group 3 and the user side 5 and pipelines at the output end of the complementary heat source 4, so that heat can be supplied to the user side 5 by the heat storage water tank 2 and the complementary heat source 4 independently or jointly to the user side 5 according to a temperature threshold.
In one embodiment, the solar heat source 1 comprises a solar heat collector 101, a heat collecting water pump 103 and a heat collecting heat exchanger 104;
wherein, the output end of the solar heat collector 101 is connected with the input end of the heat collecting heat exchanger 104; the output end of the heat collection heat exchanger 104 is connected with the heat collection water pump 103 and then connected with the input end B of the heat storage water tank 2, and the water outlet end of the output side of the heat storage water tank 2 is connected with the water outlet pump group 205.
In one embodiment, the plate heat exchanger package 3 comprises a first plate heat exchanger 301, a second plate heat exchanger 302, a third plate heat exchanger 303, a fourth plate heat exchanger 304, a first electrically powered two-way valve FM1, a second electrically powered two-way valve FM2, a third electrically powered two-way valve FM3, and a fourth electrically powered two-way valve FM 4;
the output end D of the water outlet pump group 205 is divided into two parallel paths: one path of the water inlet is connected with the third electric two-way valve FM3 and then is respectively connected with the water inlet ends of the input sides of the first plate heat exchanger 301 and the second plate heat exchanger 302 at the same time, and the other path of the water inlet is connected with the fourth electric two-way valve FM4 and then is respectively connected with the water inlet ends of the input sides of the third plate heat exchanger 303 and the fourth plate heat exchanger 304 at the same time;
water return ends of input sides of the first plate heat exchanger 301 and the second plate heat exchanger 302 are connected in parallel and then connected with an input end of the first electric two-way valve FM 1; the water return ends of the input ends of the third plate heat exchanger 303 and the fourth plate heat exchanger 304 are connected in parallel and then connected with the input end of the second electric two-way valve FM 2; the output end of the first electric two-way valve FM1 is connected with the output end of the second electric two-way valve FM2 in parallel and then connected with the water return end C on the output side of the heat storage water tank 2.
In one embodiment, the complementary heat source 4 includes a fifth electric two-way valve FM5, a sixth electric two-way valve FM6, a seventh electric two-way valve FM7, an eighth electric two-way valve FM8, a ninth electric two-way valve FM9, a tenth electric two-way valve FM10, a first high temperature water source machine 401, a second high temperature water source machine 402, and a power water pump set 403;
the water outlet ends I/K at the output sides of the third plate heat exchanger 303 and the fourth plate heat exchanger 304 are connected in parallel and then connected with the user side 5 through a seventh electric two-way valve FM 7; the return end of the user side 5 is connected with the fifth electric two-way valve FM5 and then is connected with the return water ends L/G at the output sides of the third plate heat exchanger 303 and the fourth plate heat exchanger 304;
the water outlet ends E/J at the output sides of the first plate heat exchanger 301 and the second plate heat exchanger 302 are connected in parallel, then are sequentially connected with the power water pump set 403 and the ninth electric two-way valve FM9, and then are simultaneously connected with the first input ends of the first high-temperature water source machine 401 and the second high-temperature water source machine 402; one path of the first output ends of the first high-temperature water source machine 401 and the second high-temperature water source machine 402 is communicated with the outside, and the other path of the first output ends is connected with the water return ends F/H at the output sides of the first plate heat exchanger 301 and the second plate heat exchanger 302 through a tenth electric two-way valve FM 10;
second input ends of the first high-temperature water source machine 401 and the second high-temperature water source machine 402 are connected in parallel and then connected with a sixth electric two-way valve FM6, and the sixth electric two-way valve FM6 is connected in parallel on a pipeline between the fifth electric two-way valve FM5 and the user side 5; second output ends of the first high-temperature water source machine 401 and the second high-temperature water source machine 402 are connected in parallel and then connected with an eighth electric two-way valve FM8, and the eighth electric two-way valve FM8 is connected in parallel on a pipeline between the seventh electric two-way valve FM7 and the user side 5.
In one embodiment, the user side 5 is provided with a heating circulation pump 501.
In one embodiment, a temperature sensor T2 provided inside the hot water storage tank 2 is further included.
In one embodiment, the output temperature of the user side 5 satisfies:
setting a lowest threshold t1 and a set threshold t 2;
when the temperature t in the hot water storage tank 2 is more than or equal to t2, the hot water storage tank 2 independently supplies heat for the user side 5;
when the temperature t1 in the hot water storage tank 2 is not more than t < t2, the hot water storage tank 2 is used as the heat source side heat exchange of the complementary heat source 4, and the complementary heat source 4 supplies heat to the user side 5;
when the temperature t < t1 in the hot-water storage tank 2, the complementary heat source 4 alone heats the user side 5.
In one embodiment, the lowest threshold t1 is 13 ℃ and the threshold t2 is set at 55 ℃.
In one embodiment, when the hot water storage tank 2 is used for heat exchange on the heat source side of the complementary heat source 4, the hot water of the hot water storage tank 2 enters the evaporator of the complementary heat source 4 unit and enters the evaporator as the heat source of the unit, and the heating temperature of the user side 5 on the condenser side of the complementary heat source 4 unit is in the range of 60-75 ℃.
In one embodiment, the evaporator is a wide-width evaporator, the water inlet temperature ranges from 10 ℃ to 60 ℃, and the water outlet temperature of the condenser reaches 60 ℃ to 75 ℃.
The utility model discloses an effective effect: the utility model can realize the independent operation of the solar heat source and the complementary heat source; when the water temperature of the heat storage water tank cannot meet the heat supply requirement of the tail end, the heat storage water tank and the complementary heat source work in a complementary mode, and the water discharged from the heat storage water tank is used as the water inlet of the evaporation heat exchange side of the complementary heat source; when the temperature of the heat storage water tank is lower than that of underground water, a complementary heat source is adopted to supply heat independently, and the energy-saving and efficient heat storage water tank has the advantages of energy conservation and high efficiency.
Drawings
The present invention will be described in more detail hereinafter based on embodiments and with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a solar heat source according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a hot water storage tank according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a plate heat exchanger group according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of the complementary heat source set according to the embodiment of the present invention.
In the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Referring to fig. 1 to 4, the combined heating system for different heating temperature requirements in alpine regions of the present invention includes a solar heat source 1, a heat storage water tank 2, a plate heat exchanger group 3 and a complementary heat source 4, wherein the heat storage side of the heat storage water tank 2 is connected to the solar heat source 1 through a pipeline; the output side of the heat storage water tank 2 is connected with a user side 5 through a plate type heat exchanger group 3; the input end of the complementary heat source 4 is connected with a water taking well through a pipeline; the output end of the complementary heat source 4 is connected in parallel between the output side of the heat storage water tank 2 and the connecting pipeline of the user side 5 through a pipeline;
controllable electric two-way valves are arranged on pipelines between the heat storage side of the heat storage water tank 2 and the solar heat source 1, pipelines between the plate type heat exchanger group 3 and the user side 5 and pipelines at the output end of the complementary heat source 4, so that heat can be supplied to the user side 5 by the heat storage water tank 2 and the complementary heat source 4 independently or jointly to the user side 5 according to a temperature threshold.
In a specific embodiment, as shown in fig. 1, the solar heat source 1 comprises a solar heat collector 101, a heat collecting water pump 103 and a heat collecting heat exchanger 104; wherein, the output end of the solar heat collector 101 is connected with the input end of the heat collecting heat exchanger 104; the output end of the heat collection heat exchanger 104 is connected with the heat collection water pump 103 and then connected with the input end of the heat storage water tank 2.
In another specific embodiment, referring to fig. 2, the water outlet end of the output side of the hot water storage tank 2 is connected with the water outlet pump set 205.
In another specific embodiment, as shown in fig. 2 and 3 in particular, the plate heat exchanger group 3 includes a first plate heat exchanger 301, a second plate heat exchanger 302, a third plate heat exchanger 303, a fourth plate heat exchanger 304, a first electric two-way valve FM1, a second electric two-way valve FM2, a third electric two-way valve FM3, and a fourth electric two-way valve FM 4; after the water outlet end of the output side of the heat storage water tank 2 is connected with the water outlet pump group 205, the water outlet end is simultaneously connected with the water inlet ends of the input sides of the first plate heat exchanger 301, the second plate heat exchanger 302, the third plate heat exchanger 303 and the fourth plate heat exchanger 304; the water return ends of the input sides of the first plate heat exchanger 301, the second plate heat exchanger 302, the third plate heat exchanger 303 and the fourth plate heat exchanger 304 are connected in parallel and then connected with the water return end C of the output side of the heat storage water tank 2.
Further, as shown in fig. 3, the output end D of the water outlet pump group 205 is divided into two parallel paths: one path of the water inlet end is simultaneously connected with the input sides of the first plate heat exchanger 301 and the second plate heat exchanger 302, and the other path of the water inlet end is simultaneously connected with the input sides of the third plate heat exchanger 303 and the fourth plate heat exchanger 304.
Specifically, in this example, one of the output ends D of the water outlet pump group 205 is simultaneously connected to the water inlet ends of the input sides of the first plate heat exchanger 301 and the second plate heat exchanger 302 through the third electric two-way valve FM3, and the other is simultaneously connected to the water inlet ends of the input sides of the third plate heat exchanger 303 and the fourth plate heat exchanger 304 through the fourth electric two-way valve FM 4.
Further, as shown in fig. 3, the water return ends on the input sides of the first plate heat exchanger 301 and the second plate heat exchanger 302 are connected in parallel and then connected to the water return end C on the output side of the hot water storage tank 2, and the water return ends on the input sides of the third plate heat exchanger 303 and the fourth plate heat exchanger 304 are connected in parallel and then connected to the water return end C on the output side of the hot water storage tank 2.
Specifically, in this example, the water return ends at the input sides of the first plate heat exchanger 301 and the second plate heat exchanger 302 are connected in parallel and then connected to the input end of the first electric two-way valve FM 1; the water return ends of the input sides of the third plate heat exchanger 303 and the fourth plate heat exchanger 304 are connected in parallel and then connected with the input end of the second electric two-way valve FM 2; the output end of the first electric two-way valve FM1 is connected with the output end of the second electric two-way valve FM2 in parallel and then connected with the water return end C on the output side of the heat storage water tank 2.
In yet another specific embodiment, as shown in fig. 4, the complementary heat source 4 includes a fifth electric two-way valve FM5, a sixth electric two-way valve FM6, a seventh electric two-way valve FM7, an eighth electric two-way valve FM8, a ninth electric two-way valve FM9, a tenth electric two-way valve FM10, a first high temperature water source machine 401, a second high temperature water source machine 402, and a power water pump set 403.
Further, as shown in fig. 3 and 4, the water outlet ends I/K at the output sides of the third plate heat exchanger 303 and the fourth plate heat exchanger 304 are connected in parallel and then connected to the user side 5 through a seventh electric two-way valve FM 7; and the return end of the user side 5 is connected with the fifth electric two-way valve FM5 and then is connected with the return water ends L/G at the output sides of the third plate heat exchanger 303 and the fourth plate heat exchanger 304.
On the other hand, the water outlet ends E/J of the output sides of the first plate heat exchanger 301 and the second plate heat exchanger 302 are connected in parallel, then are sequentially connected with the power water pump set 403 and the ninth electric two-way valve FM9, and then are simultaneously connected with the first input ends of the first high-temperature water source machine 401 and the second high-temperature water source machine 402; one path of the first output ends of the first high-temperature water source machine 401 and the second high-temperature water source machine 402 is communicated with the outside, and the other path of the first output ends is connected with the water return ends F/H at the output sides of the first plate heat exchanger 301 and the second plate heat exchanger 302 through a tenth electric two-way valve FM 10;
furthermore, second input ends of the first high-temperature water source machine 401 and the second high-temperature water source machine 402 are connected in parallel and then connected with a sixth electric two-way valve FM6, and the sixth electric two-way valve FM6 is connected in parallel on a pipeline between the fifth electric two-way valve FM5 and the user side 5; second output ends of the first high-temperature water source machine 401 and the second high-temperature water source machine 402 are connected in parallel and then connected with an eighth electric two-way valve FM8, and the eighth electric two-way valve FM8 is connected in parallel on a pipeline between the seventh electric two-way valve FM7 and the user side 5.
In another embodiment, referring to fig. 1, a temperature sensor T1 is further installed on the pipe of the solar collector 101 for monitoring the temperature of the solar collector 101 to prevent the solar heat collecting side from overheating.
Furthermore, a thirteenth electric two-way valve FM13, a fourteenth electric two-way valve FM14 and a fifteenth electric two-way valve FM15 are further arranged and used for heat dissipation when the solar heat collection side is overheated.
In another particular embodiment, and with reference to figure 2, a temperature sensor T2 is provided within the hot water storage tank 2 for monitoring the temperature within the hot water storage tank 2.
In the utility model, the user side 5 is provided with a heating circulating pump 501, see fig. 4.
The utility model discloses the control method of user side 5 output temperature is: setting a lowest threshold t1 and a set threshold t 2;
when the temperature t in the hot water storage tank 2 is more than or equal to t2, the hot water storage tank 2 independently supplies heat for the user side 5;
when the temperature t1 in the hot water storage tank 2 is not less than t < t2, the hot water storage tank 2 is used as the heat source side heat exchange of the complementary heat source 4, and the complementary heat source 4 supplies heat to the user side 5;
when the temperature t < t1 in the hot-water storage tank 2, the complementary heat source 4 alone heats the user side 5.
Different heating modes are obtained by comparing the temperature t in the hot water storage tank 2 with a minimum threshold value t1 and a set threshold value t 2.
For example: the lowest threshold t1 is 13 ℃; the threshold t2 is set at 55 c, and the set point of 55 c in the actual control can be reprogrammed according to the end room temperature conditions.
(1) When the user side 5 heating circulation pump 501 is in an operating state and the temperature t in the hot water storage tank 2 is greater than 55 ℃, the hot water storage tank 2 independently heats. Namely: when the heating circulating pump 501 is kept in an open state and t is greater than 55 ℃, the working principle of the system is as follows:
the first high temperature water source machine 401 and the second high temperature water source machine 402 remain off; the second electric two-way valve FM2, the fourth electric two-way valve FM4, the fifth electric two-way valve FM5 and the seventh electric two-way valve FM7 are turned on; the first and third electric two-way valves FM1 and FM3, the sixth and eighth electric two-way valves FM6 and FM8 are closed.
(2) When the user side 5 heating circulating pump 501 is in an operating state and t is more than or equal to 13 ℃ and less than 55 ℃, the heat storage water tank 2 is used as the heat source side heat exchange of the complementary heat source 4, namely, the hot water of the heat storage water tank 2 is only supplied to the heat taking side (evaporation side) of the complementary heat source 4 unit, then the complementary heat source 4 unit completes the internal work, and the complementary heat source 4 supplies heat to the tail end through the heat release of the condenser. Namely: when the heating circulating pump 501 is kept in an open state and t is more than or equal to 13 ℃ and less than 55 ℃, the working principle of the system is as follows:
the complementary heat source 4 remains on; the second electric two-way valve FM2 and the fourth electric two-way valve FM4, the fifth electric two-way valve FM5 and the seventh electric two-way valve FM7 are closed; the first electric two-way valve FM1, the third electric two-way valve FM3, the sixth electric two-way valve FM6 and the eighth electric two-way valve FM8 are turned on; ninth electric two-way valve FM9 and tenth electric two-way valve FM10 are kept open, and eleventh electric two-way valve FM11 and twelfth electric two-way valve FM12 are kept closed.
The complementary heat source 4 adopts a high-temperature water source heat pump unit, and the outlet water temperature of the complementary heat source 4 can reach more than 60 ℃, which is higher than that of the traditional water source heat pump unit which can only be below 45 ℃.
(3) When the heating circulating pump 501 at the user side 5 is in an operating state and t is less than 13 ℃, the heating capacity of the heat storage water tank 2 is insufficient, the complementary heat source 4 system is started, and the complementary heat source 4 is adopted for independent heating. Namely: when the heating circulating pump 501 is kept in an open state and t is less than 13 ℃, the working principle of the system is as follows:
the complementary heat source 4 remains on; the second electric two-way valve FM2 and the fourth electric two-way valve FM4, the fifth electric two-way valve FM5 and the seventh electric two-way valve FM7, and the first electric two-way valve FM1 and the third electric two-way valve FM3 are closed; the sixth electric two-way valve FM6 and the eighth electric two-way valve FM8 are turned on; ninth electric two-way valve FM9 and tenth electric two-way valve FM10 remain closed, and eleventh electric two-way valve FM11 and twelfth electric two-way valve FM12 remain open.
The complementary heat source 4 adopts a high-temperature water source heat pump unit, and the outlet water temperature of the complementary heat source 4 can reach more than 60 ℃, which is higher than that of the traditional water source heat pump unit which can only be below 45 ℃.
In order to satisfy the terminal indirect heating equipment of different heating temperature demands and evaporating temperature's broad width variation, the utility model discloses possess following characteristics:
when the combined heating system of the utility model is used for combined heating, heat source water of the heat storage water tank 2 enters the evaporator of the complementary heat source unit 4 and is used as heat source inlet water of the evaporator, the heating temperature range of the user side 5 at the condenser side of the complementary heat source unit 4 is 60-75 ℃, namely the water supply temperature at the condenser side of the heat pump unit is 60-75 ℃, and a plate heat exchanger can be arranged outside the system for secondary heating below 60 ℃;
the evaporation temperature of the heat pump unit is allowed to run in a wide range at 10-60 ℃, and the heat pump unit is mainly operated in the modes of external water inlet variable flow rate accurate control, a large temperature difference heat exchange type evaporator, a liquid spraying cooling compressor and the like.
The utility model can realize the independent operation of the solar heat source 1 and the complementary heat source 4; when the water temperature of the heat storage water tank 2 cannot meet the heat supply requirement of the tail end, the heat storage water tank 2 and the complementary heat source 4 work complementarily, and the water outlet of the heat storage water tank 2 is used as the water inlet of the evaporation heat exchange side of the complementary heat source 4; when the temperature of the heat storage water tank 2 is lower than that of underground water, the complementary heat source 4 is adopted to supply heat independently, and the energy-saving and efficient heat storage water tank has the advantages of energy conservation and high efficiency.
It is to be understood that: the temperature of the lowest threshold t1 may be the groundwater temperature, or may be set according to actual conditions.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present invention is not limited to the particular embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.
Claims (7)
1. The combined heating system for different heating temperature requirements in alpine regions is characterized by comprising a solar heat source (1), a heat storage water tank (2), a plate heat exchanger set (3) and a complementary heat source (4), wherein the solar heat source (1) is connected with the heat storage side of the heat storage water tank (2) through a pipeline, one output side of the heat storage water tank (2) is connected with a user side (5) through the plate heat exchanger set (3), and the other output side of the heat storage water tank (2) is connected with an evaporator side of the complementary heat source (4) after heat exchange through the plate heat exchanger set (3); the evaporator side of the complementary heat source (4) exchanges heat with underground water through a pipeline, and the condenser side of the output end of the complementary heat source (4) is connected in parallel between the output side of the heat storage water tank (2) and the connecting pipeline of the user side (5) through a pipeline;
the controllable electric two-way valves are arranged on a pipeline between the heat storage side of the heat storage water tank (2) and the solar heat source (1), a pipeline between the plate type heat exchanger group (3) and the user side (5) and a pipeline at the output end of the complementary heat source (4) so as to realize independent heat supply to the user side (5) by using the heat storage water tank (2) and the complementary heat source (4) or combined heat supply to the user side (5) according to a temperature threshold.
2. The compound heating system for different heating temperature requirements of alpine regions according to claim 1, wherein: the solar heat source (1) comprises a solar heat collector (101), a heat collection water pump (103) and a heat collection heat exchanger (104);
the output end of the solar heat collector (101) is connected with the input end of the heat collecting heat exchanger (104); the output end of the heat collection heat exchanger (104) is connected with the heat collection water pump (103) and then is connected with the input end (B) of the heat storage water tank (2), and the water outlet end of the output side of the heat storage water tank (2) is connected with the water outlet pump group (205).
3. The compound heating system for different heating temperature requirements of alpine regions according to claim 2, wherein: the plate heat exchanger group (3) comprises a first plate heat exchanger (301), a second plate heat exchanger (302), a third plate heat exchanger (303), a fourth plate heat exchanger (304), a first electric two-way valve (FM1), a second electric two-way valve (FM2), a third electric two-way valve (FM3) and a fourth electric two-way valve (FM 4);
wherein, the output end (D) of the water outlet pump group (205) is divided into two paths which are connected in parallel: one path of the water inlet pipe is connected with a third electric two-way valve (FM3) and then is respectively connected with the water inlet ends of the input sides of the first plate heat exchanger (301) and the second plate heat exchanger (302) at the same time, and the other path of the water inlet pipe is connected with a fourth electric two-way valve (FM4) and then is respectively connected with the water inlet ends of the input sides of the third plate heat exchanger (303) and the fourth plate heat exchanger (304) at the same time;
the water return ends of the input sides of the first plate heat exchanger (301) and the second plate heat exchanger (302) are connected in parallel and then connected with the input end of the first electric two-way valve (FM 1); the water return ends of the input ends of the third plate heat exchanger (303) and the fourth plate heat exchanger (304) are connected in parallel and then connected with the input end of a second electric two-way valve (FM 2); the output end of the first electric two-way valve (FM1) is connected with the output end of the second electric two-way valve (FM2) in parallel and then is connected with the water return end (C) on the output side of the heat storage water tank (2).
4. The compound heating system for different heating temperature requirements of alpine regions according to claim 3, wherein: the complementary heat source (4) comprises a fifth electric two-way valve (FM5), a sixth electric two-way valve (FM6), a seventh electric two-way valve (FM7), an eighth electric two-way valve (FM8), a ninth electric two-way valve (FM9), a tenth electric two-way valve (FM10), a first high-temperature water source machine (401), a second high-temperature water source machine (402) and a power water pump set (403);
the water outlet ends (I/K) of the output sides of the third plate heat exchanger (303) and the fourth plate heat exchanger (304) are connected in parallel and then are connected with the user side (5) through a seventh electric two-way valve (FM 7); the return end of the user side (5) is connected with a fifth electric two-way valve (FM5) and then is connected with the return ends (L/G) of the output sides of the third plate heat exchanger (303) and the fourth plate heat exchanger (304);
the water outlet ends (E/J) at the output sides of the first plate heat exchanger (301) and the second plate heat exchanger (302) are connected in parallel, then are sequentially connected with the power water pump set (403) and the ninth electric two-way valve (FM9), and then are simultaneously connected with the first input ends of the first high-temperature water source machine (401) and the second high-temperature water source machine (402); one path of the first output ends of the first high-temperature water source machine (401) and the second high-temperature water source machine (402) is communicated with the outside, and the other path of the first output ends is connected with the water return ends (F/H) on the output sides of the first plate type heat exchanger (301) and the second plate type heat exchanger (302) through a tenth electric two-way valve (FM 10);
second input ends of the first high-temperature water source machine (401) and the second high-temperature water source machine (402) are connected in parallel and then connected with a sixth electric two-way valve (FM6), and the sixth electric two-way valve (FM6) is connected in parallel on a pipeline between the fifth electric two-way valve (FM5) and the user side (5); second output ends of the first high-temperature water source machine (401) and the second high-temperature water source machine (402) are connected in parallel and then connected with an eighth electric two-way valve (FM8), and the eighth electric two-way valve (FM8) is connected in parallel on a pipeline between the seventh electric two-way valve (FM7) and the user side (5).
5. The compound heating system for different heating temperature requirements of alpine regions according to claim 1, wherein: a heating circulation pump (501) is arranged on the user side (5).
6. The compound heating system for different heating temperature requirements of alpine regions according to claim 1, wherein: and a temperature sensor (T2) arranged in the heat storage water tank (2).
7. The compound heating system for different heating temperature requirements of alpine regions according to claim 1, wherein: the evaporator is a wide evaporator.
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| CN201921746313.6U CN212132657U (en) | 2019-10-17 | 2019-10-17 | Combined heating system for different heating temperature requirements in alpine regions |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115127136A (en) * | 2022-05-25 | 2022-09-30 | 华电电力科学研究院有限公司 | Energy storage and heat supply system and method based on renewable energy heating power station |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115127136A (en) * | 2022-05-25 | 2022-09-30 | 华电电力科学研究院有限公司 | Energy storage and heat supply system and method based on renewable energy heating power station |
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