CN207797446U - Soil source heat pump and solar energy combined heating system for improving source side inlet water temperature - Google Patents

Abstract

A ground source heat pump and solar energy combined heating system for improving the temperature of inlet water at the source side belongs to the field of ground source heat pump systems. The heat pump unit is connected with the double-U heat exchanger, the heat pump unit is connected with the heat exchanger, the water storage container is connected with the heat exchanger, the heat exchanger is connected with the solar energy collection equipment, a ground source circulating pump and a valve are installed between the heat pump unit and the double-U heat exchanger, the valve is arranged between the heat exchanger and the heat pump unit, a heat storage circulating pump is arranged between the heat exchanger and the water storage container, a heat collection circulating pump is arranged between the heat exchanger and the solar energy collection equipment, and the controller. The beneficial effects are that the utility model discloses well ground source heat pump and solar energy coupling have improved heat pump set temperature of intaking, improve the efficiency of heat pump host computer, can also prepare life hot water through solar energy free when ground source heat pump refrigerates in summer simultaneously, have practiced thrift the energy, have improved system overall utilization.

Description

A Combined Heating System of Ground Source Heat Pump and Solar Energy to Raise the Inlet Water Temperature on the Source Side

technical field

The utility model belongs to the field of soil source heat pump systems, in particular to a combined heating system of soil source heat pumps and solar energy that increases the temperature of water entering the source side.

Background technique

The existing ground source heat pump system encounters extremely cold weather, often due to the low temperature of the water entering the unit, the efficiency of the ground source heat pump system is low, or even cannot be started, which affects the heating supply. During the construction process, the main pipe of the buried pipe is generally not Taking insulation measures will make the water temperature of the source-side inlet unit more difficult to guarantee, thereby affecting the efficiency and operation of the heat pump host. How to ensure the source-side working condition of the soil source heat pump host and improve the efficiency of the heat pump unit is an important issue in the current soil heat pump system. .

Utility model content

In order to overcome the deficiencies of the above-mentioned prior art, the utility model proposes a combined heating system of a soil source heat pump and solar energy that increases the inlet water temperature at the source side. In the heating season, the solar heat collector is mixed with the water entering the unit from the soil source side to increase the temperature of the water entering the source side, so as to ensure the stable operation of the unit and improve the operation efficiency. In the cooling season, the solar energy system is used as the domestic hot water heat source to prepare domestic hot water by switching the valve, which saves energy and improves the overall utilization rate of the system.

The technical scheme is as follows:

A soil source heat pump and solar energy combined heating system that increases the temperature of the water entering the source side, including: heat pump unit, heat exchanger, solar energy collection equipment, double U heat exchanger, ground source circulation pump, heat collection circulation pump, heat storage circulation pump, water storage container, valve and controller, the heat pump unit is connected to the double U heat exchanger, the heat pump unit is connected to the heat exchanger, the water storage container is connected to the heat exchanger, and the The heat exchanger is connected with the solar energy collection equipment, the ground source circulation pump and valve are installed between the heat pump unit and the double-U heat exchanger, and the heat exchanger and the heat pump unit are arranged The valve is provided, the heat storage circulation pump is arranged between the heat exchanger and the water storage container, the heat collection circulation pump is arranged between the heat exchanger and the solar energy collection equipment, and the The controller is connected to the heat storage circulating pump.

Further, the heat exchanger is a volumetric heat exchanger.

Further, the valve set between the heat exchanger and the water storage container is an electric valve I; the valve set between the heat exchanger and the heat pump unit is an electric valve II; the heat pump set and the heat pump set The valve set between the above-mentioned double U heat exchangers is the electric valve III.

Further, the controller is respectively connected with the electric valve I, the electric valve II and the electric valve III.

Further, the controller is a PLC control system.

Further, the number of double-U heat exchangers is more than one.

Further, the solar energy collection equipment adopts solar panels.

Further, the water storage container is a domestic hot water tank or a bath or swimming pool.

Further, the heat pump unit is externally equipped with a circulating pump for supplying heat to the heat-using end.

The beneficial effects of the utility model are:

In the joint heating system of soil source heat pump and solar energy that increases the inlet water temperature on the source side described in the utility model, the soil source heat pump is coupled with solar energy, which improves the inlet water temperature of the heat pump unit and improves the efficiency of the heat pump host, and can also be used in summer When the ground source heat pump is cooling, domestic hot water is prepared free of charge through solar energy, which saves energy and improves the overall utilization rate of the system.

Description of drawings

Fig. 1 is the structural representation of the utility model;

In the figure: 1. Heat pump unit, 2. Heat exchanger, 3. Solar energy collection equipment, 4. Double U heat exchanger, 5. Ground source circulation pump, 6. Heat collection circulation pump, 7. Heat storage circulation pump, 8 .Water storage container, 9. Electric valve Ⅰ, 10. Electric valve Ⅱ, 11. Electric valve Ⅲ.

Detailed ways

The combined heating system of soil source heat pump and solar energy for increasing the inlet water temperature on the source side will be further described below in conjunction with accompanying drawing 1 .

Example 1

A soil source heat pump and solar energy combined heating system that increases the temperature of the water entering the source side, including: heat pump unit 1, heat exchanger 2, solar energy collection equipment 3, double U heat exchanger 4, ground source circulation pump 5, heat collector circulation pump 6, heat storage circulation pump 7, water storage container 8, valves and controllers, the heat pump unit 1 is connected to the double U heat exchanger 4, the heat pump unit 1 is connected to the heat exchanger 2, the The water storage container 8 is connected to the heat exchanger 2, the heat exchanger 2 is connected to the solar energy collection equipment 3, and the ground source is installed between the heat pump unit 1 and the double U heat exchanger 4 Circulation pump 5 and valve, the valve is provided between the heat exchanger 2 and the heat pump unit 1, and the heat storage circulation pump 7 is provided between the heat exchanger 2 and the water storage container 8 , the heat collection circulation pump 6 is arranged between the heat exchanger 2 and the solar energy collection equipment 3, and the heat storage circulation pump 7 is connected to the controller.

The heat exchanger 2 is a volumetric heat exchanger 2, and an electric valve I9 is arranged between the heat exchanger 2 and the water storage container 8; There is an electric valve II10; an electric valve III11 is set between the heat pump unit 1 and the double-U heat exchanger 4, the solar energy collection device 3 uses a solar panel 3, and the water storage container 8 is a domestic hot water tank 8 , the heat pump unit 1 is externally equipped with a circulating pump for supplying heat to the heat-using end.

The system has the following two working modes:

1. Combined solar heating mode

The heat collected by the solar panel 3 is sent to the volumetric heat exchanger 2 through the heat collection circulation pump 6 to exchange heat with the circulation flow of the heat storage circulation pump 7, open the electric valve II10, close the electric valve I9, and adjust the electric valve III11 The opening degree makes part of the flow on the soil source side flow into the volumetric heat exchanger 2 for heat exchange and then mixes with other flows on the soil side before entering the unit, thereby increasing the water temperature entering the group. The heat pump unit 1 extracts the heat from the source side and supplies it to the heat-using end through the circulation pump.

2. The mode of domestic hot water preparation by solar energy

The heat collected by the solar panel 3 is sent to the volumetric heat exchanger 2 through the heat collection circulation pump 6 to exchange heat with the circulation flow of the heat storage circulation pump 7, open the electric valve I9, close the electric valve II10, and the heat storage circulation pump 7 is continuously circulated, and the domestic water tank 8 is heated to the design temperature, thereby completing the domestic hot water cycle prepared by solar energy. The heat pump unit 1 discharges the indoor building waste heat to the ground through the double-U heat exchanger 4 through the circulation pump to realize the refrigeration cycle.

Example 2

A soil source heat pump and solar energy combined heating system that increases the temperature of the water entering the source side, including: heat pump unit 1, heat exchanger 2, solar energy collection equipment 3, double U heat exchanger 4, ground source circulation pump 5, heat collector circulation pump 6, heat storage circulation pump 7, water storage container 8, valves and controllers, the heat pump unit 1 is connected to the double U heat exchanger 4, the heat pump unit 1 is connected to the heat exchanger 2, the The water storage container 8 is connected to the heat exchanger 2, the heat exchanger 2 is connected to the solar energy collection equipment 3, and the ground source is installed between the heat pump unit 1 and the double U heat exchanger 4 Circulation pump 5 and valve, the valve is arranged between the heat exchanger 2 and the heat pump unit 1, and the heat storage circulation pump 7 is arranged between the heat exchanger 2 and the water storage container 8 , the heat collection circulation pump 6 is arranged between the heat exchanger 2 and the solar energy collection equipment 3, and the heat storage circulation pump 7 is connected to the controller.

The heat exchanger 2 is a volumetric heat exchanger 2, and an electric valve I9 is arranged between the heat exchanger 2 and the water storage container 8; There is an electric valve II10; an electric valve III11 is set between the heat pump unit 1 and the double-U heat exchanger 4, and the controller is connected to the electric valve I9, the electric valve II10 and the electric valve III11 respectively.

The controller is a PLC control system, which is used to control the opening and closing of the controller and the electric valve I9, the electric valve II10 and the electric valve III11 respectively.

The double-U heat exchanger 4 is provided with 3 groups, and each group of double-U heat exchanger 4 is respectively connected with the heat pump unit 1, the solar energy collection device 3 adopts a solar panel 3, and the water storage container 8 is used for living heat. The water tank 8, the heat pump unit 1 is equipped with a circulating pump, which is used to supply heat to the heat-using end.

The system has the following two working modes:

1. Combined solar heating mode

The heat collected by the solar panel 3 is sent to the volumetric heat exchanger 2 through the heat collection circulation pump 6 to exchange heat with the circulation flow of the heat storage circulation pump 7, open the electric valve II10, close the electric valve I9, and adjust the electric valve III11 The opening degree makes part of the flow on the soil source side flow into the volumetric heat exchanger 2 for heat exchange and then mixes with other flows on the soil side before entering the unit, thereby increasing the water temperature entering the group. The heat pump unit 1 extracts the heat from the source side and supplies it to the heat-using end through the circulation pump.

2. The mode of domestic hot water preparation by solar energy

The heat collected by the solar panel 3 is sent to the volumetric heat exchanger 2 through the heat collection circulation pump 6 to exchange heat with the circulation flow of the heat storage circulation pump 7, open the electric valve I9, close the electric valve II10, and the heat storage circulation pump 7 is continuously circulated, and the domestic water tank 8 is heated to the design temperature, thereby completing the domestic hot water cycle prepared by solar energy. The heat pump unit 1 discharges the indoor building waste heat to the ground through the double-U heat exchanger 4 through the circulation pump to realize the refrigeration cycle.

Example 3

A ground source heat pump and solar energy combined heating system that increases the temperature of the source side water. The whole system includes the ground source heat pump subsystem and the solar energy subsystem. The ground source heat pump subsystem includes: heat pump unit, circulation pump, double U heat exchange Water supply and return pipes; solar subsystems include: solar panels, volumetric heat exchangers, circulation pumps, hot water pipes, domestic hot water tanks, and electric valves.

The heat collection side of the volumetric heat exchanger is connected to the solar panel, and there are two circuits on the heat storage side, one circuit is connected to the domestic hot water tank, and the other circuit is connected to the water supply and return pipe on the soil source side.

During the heating season, close the valve on the pipeline connected to the domestic hot water tank, and open the valve on the pipeline parallel to the water supply and return pipe on the source side, so that part of the water entering the source side can be heated through the volumetric heat exchanger, thereby increasing the efficiency of the unit. water temperature.

In the cold season, open the valve on the pipeline connected to the domestic hot water tank, and close the valve on the pipeline connected to the water supply and return pipe on the source side in parallel, so that the soil source heat pump subsystem and the solar energy subsystem operate independently, and the soil source heat pump system supplies Cold, solar system prepares domestic hot water.

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. The equivalent replacement or change of the new technical solution and the concept of the utility model shall be covered by the protection scope of the utility model.

Claims (9)

1. A combined soil source heat pump and solar energy heating system that increases the temperature of the inlet water at the source side, characterized in that it includes: heat pump unit (1), heat exchanger (2), solar energy collection equipment (3), double U heat exchanger Heater (4), ground source circulation pump (5), heat collection circulation pump (6), heat storage circulation pump (7), water storage container (8), valve and controller, the heat pump unit (1) and The double U heat exchanger (4) is connected, the heat pump unit (1) is connected to the heat exchanger (2), the water storage container (8) is connected to the heat exchanger (2), and the heat exchanger Heater (2) is connected with described solar energy collection equipment (3), described ground source circulation pump (5) and valve are installed between described heat pump unit (1) and described double U heat exchanger (4), The valve is arranged between the heat exchanger (2) and the heat pump unit (1), and the heat storage cycle is arranged between the heat exchanger (2) and the water storage container (8). pump (7), the heat collection circulation pump (6) is arranged between the heat exchanger (2) and the solar energy collection equipment (3), and the controller is connected to the heat storage circulation pump (7) . 2. The combined heating system of soil source heat pump and solar energy for increasing the temperature of inlet water at the source side according to claim 1, characterized in that the heat exchanger (2) is a volumetric heat exchanger. 3. The combined heating system of soil source heat pump and solar energy for increasing the inlet water temperature at the source side according to claim 2, characterized in that, the heat exchanger (2) and the water storage container (8) are arranged between The valve is electric valve I (9); the valve set between the heat exchanger (2) and the heat pump unit (1) is electric valve II (10); the heat pump unit (1) and the dual The valve arranged between the U heat exchangers (4) is an electric valve III (11). 4. The soil source heat pump and solar combined heating system for increasing the inlet water temperature at the source side according to claim 3, characterized in that, the controller is connected with the electric valve I (9) and electric valve II (10) respectively. ) is connected to the electric valve III (11). 5. The combined heating system of soil source heat pump and solar energy for increasing the temperature of inlet water at the source side according to any one of claims 1-4, characterized in that the controller is a PLC control system. 6. The combined heating system of soil source heat pump and solar energy for increasing the inlet water temperature at the source side according to claim 2, characterized in that, the number of the double U heat exchangers (4) is more than one. 7. The combined heating system of soil source heat pump and solar energy for increasing the inlet water temperature at the source side according to claim 2, characterized in that, the solar energy collection equipment (3) adopts solar panels. 8. The soil source heat pump combined with solar energy heating system for increasing the inlet water temperature at the source side according to claim 2, characterized in that the water storage container (8) is a domestic hot water tank or a bath or swimming pool. 9. The soil source heat pump combined with solar energy heating system for increasing the inlet water temperature at the source side according to claim 5, characterized in that, the heat pump unit (1) is equipped with a cycle for supplying heat to the heat-using end Pump.