CN206582939U - Water resource heat pump solar energy Combined heating system - Google Patents

Abstract

The utility model relates to the structure of a water source heat pump solar energy composite heating system, which comprises a heat storage tank, one side of the heat storage tank is provided with a solar heat collector, the other side of the heat storage tank is provided with a water source heat pump unit, and the solar collector The heater forms a closed loop through the pipes and the heat storage tank. One side of the water source heat pump unit also forms a closed loop through the pipes and the heat storage tank. The water outlet pipe and the top of the hot water storage tank are connected with a water supply pipe, and an auxiliary electric heater, a temperature sensor and a water level gauge are also arranged in the hot water storage tank. The beneficial effect of the utility model is that the arrangement of the solar heat collector utilizes solar energy to heat the water tank to form a water source and a heat source, which can be used for the water source heat pump; the arrangement of the auxiliary electric heater makes up for the shortcomings of solar energy and improves the stability of the system. It also effectively utilizes low-valley power to shift peaks and fill valleys, which greatly reduces the operating cost of the system.

Description

Water source heat pump solar composite heating system

technical field

The utility model belongs to the technical field of heat pump heating and relates to a water source heat pump solar energy composite heating system.

Background technique

At present, the traditional coal-fired heating method is increasingly being replaced by clean energy such as gas and electricity. Among them, the heat pump technology represented by water source heat pump, ground source heat pump and air source heat pump has become the mainstream of electric energy heating, and has been widely recognized and applied, while water source heat pump is a heating method with high comprehensive energy efficiency.

Water source heat pump technology has its shortcomings and difficulties. First, water source heat pumps need to drill wells to exploit groundwater. Due to the impact of national land subsidence, groundwater exploitation is strictly controlled. At the same time, the water source heat pump system that has been built is difficult to recharge, and the water volume and water level have dropped. , leading to problems such as insufficient heat supply and decreased heating effect. In response to these problems, many comprehensive solutions have emerged, such as solar energy + air energy + water source heat pump, solar house + air energy + water source heat pump and other technologies. These technical systems are complex, with high initial investment and poor economy. At the same time, there is no classification of the market. There is a significant difference in heating demand between civil buildings and non-civil buildings. Non-civil buildings only need low-temperature circulation at night and do not require an overly complicated heating system.

Utility model content

The purpose of this utility model is to provide a water source heat pump solar energy composite heating system, which solves the problems of existing water source heat pumps such as the difficulty of drilling wells, the difficulty of recharging, and the low density of solar energy flow, intermittent, and instability. The problem of insufficient heat source.

The technical scheme adopted by the utility model is a water source heat pump solar energy composite heating system, which includes a hot water storage tank, a solar heat collector is arranged on one side of the hot water storage tank, and a water source is arranged on the other side of the hot water storage tank. For the heat pump unit, the solar collector forms a closed loop through the pipeline and the heat storage tank. One side of the water source heat pump unit also forms a closed loop through the pipeline and the heat storage tank. The other side of the water source heat pump unit is equipped with a load side inlet. The water pipe and the outlet pipe on the load side are connected to the water supply pipe on the top of the heat storage tank, and an auxiliary electric heater, a temperature sensor and a water level gauge are also arranged in the heat storage tank.

The utility model is also characterized in that,

Wherein, the water inlet pipe of the solar heat collector is provided with a circulating water pump of the solar heat collector, the outlet pipe of the heat storage tank to the water source heat pump unit is provided with an evaporator side circulating water pump, and the water inlet pipe of the load side of the water source heat pump unit is provided with Condenser side circulating water pump.

Wherein the first solenoid valve is housed on the replenishment pipeline of the heat storage tank.

The water storage tank is equipped with an overflow and maintenance water discharge device, which is connected to the bottom of the water storage tank through a water discharge pipe, and the overflow and maintenance water discharge device is connected to the upper part of the side wall of the heat storage tank through an overflow pipe. Connected, the discharge pipe of the hot water storage tank is equipped with a second solenoid valve.

The position of the solar heat collector is higher than that of the heat storage tank, and the top surface of the heat storage tank is flush with the top surface of the water source heat pump unit.

The outlet pipe of the solar collector is higher than the inlet pipe of the solar collector, the inlet pipe of the water storage tank facing the water source heat pump unit is higher than the outlet pipe of the water storage tank facing the water source heat pump unit, and the load of the water source heat pump unit The side water inlet pipe is higher than the load side water outlet pipe of the water source heat pump unit.

The beneficial effect of the utility model is that it solves the existing problems of the existing water source heat pumps, such as difficulty in drilling wells and recharging, and insufficient water and heat sources easily caused by low, intermittent and unstable solar energy flow density. The setting of solar collectors uses solar energy to heat the water tank to form water and heat sources, which can be used for water source heat pumps, realizing the organic combination and comprehensive utilization of solar energy and water source heat pumps (electric energy); the setting of auxiliary electric heaters makes up for the solar energy flow The shortcomings of low density, intermittent, and instability can be used in non-residential buildings such as office buildings, shopping malls, and schools. These buildings only need low-temperature circulation at night, and improve the stability of the system. Renewable energy reduces the use of conventional energy; the auxiliary electric heater can also use low-valley electricity to heat and store energy for the water tank, and effectively use low-valley electricity to shift peaks and fill valleys, alleviating the contradiction between peak and valley differences in charge, and at the same time making the system The operating cost is greatly reduced, which improves the economy of the system.

Description of drawings

Fig. 1 is a structural schematic diagram of a water source heat pump solar energy composite heating system of the present invention.

In the figure, 1. Solar collector, 2. Heat storage tank, 3. Auxiliary electric heater, 4. Water source heat pump unit, 5. Solar collector circulating water pump, 6. Evaporator side circulating water pump, 7. Temperature Sensor, 8. Water level gauge, 9. First solenoid valve, 10. Condenser side circulating water pump, 11. Overflow and maintenance water discharge device, 12. Second solenoid valve.

detailed description

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

The utility model relates to the structure of a water source heat pump solar composite heating system, as shown in Figure 1, comprising a heat storage tank 2, one side of the heat storage tank 2 is provided with a solar heat collector 1, and the other side of the heat storage tank 2 One side is provided with a water source heat pump unit 4, and the solar heat collector 1 forms a closed loop through the pipeline and the hot water storage tank 2, and one side of the water source heat pump unit 4 also forms a closed loop through the pipeline and the hot water storage tank 2, and the water source heat pump The other side of the unit 4 is provided with a load-side water inlet pipe and a load-side water outlet pipe. The top of the heat storage tank 2 is connected with a water supply pipe. The heat storage tank 2 is also equipped with an auxiliary electric heater 3, a temperature sensor 7 and a water level gauge. Count 8.

Wherein, the water inlet pipe of the solar heat collector 1 is provided with a solar heat collector circulating water pump 5, and the outlet pipe of the water storage tank 2 to the water source heat pump unit 4 is provided with an evaporator side circulating water pump 6, and the water source heat pump unit 4 The water inlet pipe on the load side is provided with a circulating water pump 10 on the condenser side. The first solenoid valve 9 is housed on the replenishment pipeline of the hot water storage tank 2 . The overflow and maintenance water discharge device 11 is arranged outside the hot water storage tank 2. The overflow and maintenance water discharge device 11 communicates with the bottom of the hot water storage tank 2 through the water discharge pipe, and the overflow and maintenance water discharge device 11 communicates with the hot water storage tank 2 through the overflow pipe. The upper part of the side wall of the tank 2 is connected, and the discharge pipe of the hot water storage tank 2 is equipped with a second solenoid valve 12 .

In addition, the position of the solar heat collector 1 is higher than the hot water storage tank 2 , and the top surface of the hot water storage tank 2 is flush with the top surface of the water source heat pump unit 4 . The water outlet pipe of the solar heat collector 1 is higher than the water inlet pipe of the solar heat collector 1, and the water inlet pipe of the heat storage tank 2 facing the water source heat pump unit 4 is higher than the water outlet pipe of the heat storage tank 2 facing the water source heat pump unit 4, The load side water inlet pipe of the water source heat pump unit 4 is higher than the load side water outlet pipe of the water source heat pump unit 4 .

Its use method is, about 6 hours before heating in winter, open the first solenoid valve 9 to fill the water storage tank 2 with water, then turn on the solar heat collector circulating water pump 5, and the solar heat collector 1 starts to serve as the heat storage tank. 2 Circulation heating, after heating to 25°C, turn on the water source heat pump unit 4, the hot water in the storage tank 2 enters the water source heat pump unit 4 through the evaporator side circulating water pump 6, and the water source heat pump unit 4 heats the water temperature to about 45°C and enters the load Side heating for the building.

When it rains and snows during the day, when the temperature of the solar heat collector 1 cannot be heated to 25°C for the heat storage tank 2, the auxiliary electric heater 3 is turned on to heat the heat storage tank to 25°C. At night, the auxiliary electric heater 3 is turned on to heat the water storage tank to 15°C, and the water source heat pump unit 4 heats the water temperature to about 35°C and then enters the low-temperature cycle on the load side.

The utility model is a water source heat pump solar energy composite heating system, which solves the existing problems of the existing water source heat pumps, such as the difficulty in drilling wells and recharging, and the problems of insufficient water and heat sources easily caused by low flow density, intermittent and instability of solar energy. . The setting of solar collectors uses solar energy to heat the water tank to form water and heat sources, which can be used for water source heat pumps, realizing the organic combination and comprehensive utilization of solar energy and water source heat pumps (electric energy); the setting of auxiliary electric heaters makes up for the solar energy flow The shortcomings of low density, intermittent, and instability can be used in non-residential buildings such as office buildings, shopping malls, and schools. These buildings only need low-temperature circulation at night, and improve the stability of the system. Renewable energy reduces the use of conventional energy; the auxiliary electric heater can also use low-valley electricity to heat and store energy for the water tank, and effectively use low-valley electricity to shift peaks and fill valleys, alleviating the contradiction between peak and valley differences in charge, and at the same time making the system The operating cost is greatly reduced, which improves the economy of the system.

Claims (6)

1. a kind of water resource heat pump solar energy Combined heating system, including hot water storage tank (2), it is characterised in that hot water storage tank (2) Side is provided with solar thermal collector (1), and the opposite side of hot water storage tank (2) is provided with water source heat pump units (4), solar energy heating Device (1) constitutes closed loop by pipeline and hot water storage tank (2), and the side of water source heat pump units (4) passes through pipeline and storage Boiler (2) also constitutes closed loop, and the opposite side of water source heat pump units (4) is provided with load side inlet channel and load side It is connected with the top of outlet conduit, hot water storage tank (2) in moisturizing pipeline, hot water storage tank (2) and is additionally provided with auxiliary electric heater (3), temperature Spend sensor (7) and water-level gauge (8).

2. water resource heat pump solar energy Combined heating system according to claim 1, it is characterised in that the solar energy heating It is provided with solar thermal collector water circulating pump (5) on the inlet channel of device (1), hot water storage tank (2) is to water source heat pump units (4) Vaporizer side water circulating pump (6) is provided with outlet conduit, the load side inlet channel of water source heat pump units (4) is provided with condensation Device side water circulating pump (10).

3. water resource heat pump solar energy Combined heating system according to claim 2, it is characterised in that the hot water storage tank (2) the first magnetic valve (9) is housed on moisturizing pipeline.

4. water resource heat pump solar energy Combined heating system according to claim 2, it is characterised in that the hot water storage tank (2) overflow and maintenance jettison gear (11) are provided with outside, overflow and maintenance jettison gear (11) pass through adjutage and hot water storage tank (2) bottom is connected, and overflow and maintenance jettison gear (11) are connected by overflow pipe with hot water storage tank (2) side wall upper part, accumulation of heat water The adjutage of case (2) is equipped with the second magnetic valve (12).

5. water resource heat pump solar energy Combined heating system according to claim 4, it is characterised in that the solar energy heating The position of device (1) is higher than hot water storage tank (2), the top surface of hot water storage tank (2) and the either flush of water source heat pump units (4).

6. water resource heat pump solar energy Combined heating system according to claim 5, it is characterised in that the solar energy heating The outlet conduit of device (1) is higher than the inlet channel of solar thermal collector (1), and hot water storage tank (2) is towards water source heat pump units (4) Inlet channel is higher than hot water storage tank (2) towards the outlet conduit of water source heat pump units (4), the load side of water source heat pump units (4) Inlet channel is higher than the load side outlet conduit of water source heat pump units (4).