CN207035380U - The air-conditioning system of station air draft water resource heat pump and heat supply network complementation combined heat - Google Patents

Abstract

The utility model provides an air-conditioning system for station air exhaust-water source heat pump and heating network complementary joint heating, which belongs to the technical field of air conditioning and includes heat pipe heat exchangers, heat storage tanks, water intake wells, return water wells, evaporators, expansion Valves, compressors, four-way reversing valves, condensers, auxiliary heaters, terminal air conditioners, heating network water supply pipelines and heating network return water pipelines, also including makeup water pumps and circulating water pumps, temperature control valves, gate valves, thermometers and pressure surface. The utility model provides an air-conditioning system for station air exhaust-water source heat pump and heating network complementary joint heating, which fully utilizes the ventilation system of large-space buildings such as stations, reduces the heat waste of exhaust air, and utilizes water source heat pumps as a renewable energy source. Joining the urban heating network, the combination of the three improves the thermal efficiency of the heat pump, reduces the initial investment of the system, alleviates the energy crisis, reduces environmental pollution, and saves operating costs at the same time.

Description

Station air-conditioning system with complementary combined heating of water source heat pump and heating network

technical field

The utility model belongs to the technical field of air-conditioning, in particular to an air-conditioning system in which station exhaust air-water source heat pumps and heating networks are combined for complementary heat supply.

Background technique

In recent years, due to the needs of work and life, the flow of people in stations has increased, and the heat generated by human body activities has accumulated in the station. The station is a large space and must be equipped with an exhaust system, so this part of the heat is discharged with the station exhaust system. , Doing so causes waste of heat and the discharge of heat into the air will cause thermal pollution and aggravate the greenhouse effect. Therefore, how to effectively use this part of heat in the heating system has become a new topic in the field of building energy conservation research.

Based on this, an air-conditioning system in which station exhaust air-water source heat pump and heat network are combined for complementary heating is proposed.

Utility model content

In order to overcome the deficiencies in the above-mentioned prior art, the utility model provides an air-conditioning system in which the station exhaust air-water source heat pump and the heat network are combined for complementary heat supply.

In order to achieve the above object, the utility model provides the following technical solutions:

The air-conditioning system of station air exhaust-water source heat pump and heating network complementary joint heating, including heat pipe heat exchanger, hot water storage tank, water intake well, return water well, evaporator, expansion valve, compressor, four-way reversing valve, condensing Device, terminal air conditioner, first circulating water pump, second circulating water pump, third circulating water pump, thermometer, pressure gauge, heating network return pipeline and heating network water supply pipeline;

The outlet of the heat pipe heat exchanger communicates with the inlet of the heat storage tank, the inlet of the heat pipe heat exchanger communicates with the first outlet of the evaporator through the first circulating water pump, and the heat storage tank The first outlet of the tank communicates with the domestic hot water pipeline through the second circulating water pump, the second outlet of the heat storage tank communicates with the inlet of the air conditioner end, and the third outlet of the heat storage tank communicates with the The first inlet of the evaporator communicates, the second outlet of the evaporator communicates with the inlet of the expansion valve, the outlet of the expansion valve communicates with the first inlet of the condenser, and the second outlet of the condenser An outlet communicates with the first inlet of the four-way reversing valve, the first outlet of the four-way reversing valve communicates with the inlet of the compressor, and the first outlet of the compressor communicates with the four-way reversing valve. It communicates with the second inlet of the valve, the second outlet of the four-way reversing valve communicates with the second inlet of the evaporator, the third inlet of the evaporator communicates with the water intake well, and the evaporator The third outlet communicates with the backwater well;

The second outlet of the condenser communicates with the inlet of the air-conditioning terminal, the second inlet of the condenser communicates with the outlet of the air-conditioning terminal, and the outlet of the air-conditioning terminal also communicates with the air-conditioning terminal through the third circulating water pump. The first outlet of the evaporator is connected, the thermometer and the pressure gauge are connected to the inlet and outlet of the air conditioner end and the condenser, and the inlet of the air conditioner end is also connected to the heating network water supply pipe. The outlet of the air conditioner terminal is also connected with the return water pipeline of the heating network.

Preferably, it also includes a first temperature control valve and a second temperature control valve, the first temperature control valve is set on the communication pipeline between the hot water storage tank and the air conditioner terminal, and the second temperature control valve is set On the communication pipeline between the hot water storage tank and the evaporator.

Preferably, it also includes a first gate valve and a second gate valve, the first gate valve is set on the communication pipeline between the air conditioner end and the evaporator, and the second gate valve is set on the air conditioner end and the condenser on the connecting pipeline.

Preferably, a branch is added between the circulating water pump and the air-conditioning terminal, and a make-up water pump is added on the branch to provide make-up water for the network.

Preferably, a third temperature control valve and a fourth temperature control valve are respectively added at the inlet and outlet of the air conditioner terminal, and the third temperature control valve is connected with the return water pipe of the air conditioner terminal and the return water pipeline of the heating network, The fourth temperature control valve is in communication with the water inlet pipe at the end of the air conditioner and the water supply pipeline of the heating network.

Preferably, the heat pipe heat exchanger is a gas-liquid heat pipe heat exchanger.

Preferably, the hot water storage tank is a phase change hot water storage tank.

Preferably, an auxiliary heater is also included, and the auxiliary heater is arranged on the domestic hot water pipeline.

The air-conditioning system provided by the utility model for station air exhaust-water source heat pump and heat network complementary joint heating completely adopts new energy, saves the use of primary energy, and recycles the waste heat generated by the station to reduce heat discharge into the air, thereby reducing heat pollution and heat waste. The combination of water source heat pump and heating network can overcome the shortcomings of unstable heating, improve heating efficiency, and alleviate the problem of insufficient power during peak power consumption. At the same time, the recovered waste heat is a completely free source of heat, improving the economy of the system. The waste heat recovery system can provide heat independently when the flow of people is large and the heat is produced a lot. When the heat is not produced, the heat through heat exchange can first heat the water in the water source heat pump and then circulate through the heat pump to improve the efficiency of the heat pump and save energy. When the water supply temperature is not satisfactory When needed, the temperature control valve on the water supply side of the heat network is opened, and the water from the heat pump passes through the heat network to provide heat to the end; in summer, the heat pump supplies heat to the building, and the waste heat generated by the exhaust air is used for domestic hot water.

Description of drawings

Fig. 1 is a structural schematic diagram of an air-conditioning system for station air exhaust-water source heat pump and heat network complementary joint heating in Embodiment 1 of the present utility model.

detailed description

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is further described. The following examples are only used to illustrate the technical solution of the utility model more clearly, but not to limit the protection scope of the utility model.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Axial", "Radial", "Circumferential" ” and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the technical solutions of the present utility model and simplifying the description, rather than indicating or implying that the referred device or element must have a specific Orientation, construction and operation in a particular orientation, therefore should not be construed as limiting the invention.

In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be construed as indicating or implying relative importance. In the description of the present utility model, it should be noted that unless otherwise specified or limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, or One-piece connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations. In the description of the present utility model, unless otherwise specified, "plurality" means two or more, and will not be described in detail here.

Example 1

The utility model provides an air-conditioning system for station air exhaust-water source heat pump and heating network complementary joint heating, as shown in Figure 1, including a heat pipe heat exchanger 1, a heat storage tank 2, a water intake well 3, and a water return well 4. Evaporator 5, expansion valve 6, compressor 7, four-way reversing valve 8, condenser 9, terminal air conditioner 11, first circulating water pump 12, second circulating water pump 15, third circulating water pump 16, thermometer 19, Pressure gauge 20, heating network return water pipeline 24 and heating network water supply pipeline 25;

The outlet of the heat pipe heat exchanger 1 communicates with the inlet of the heat storage tank 2, the inlet of the heat pipe heat exchanger 1 communicates with the first outlet of the evaporator 5 through the first circulating water pump 12, and the first outlet of the heat storage tank 2 passes through The second circulating water pump 15 communicates with the domestic hot water pipeline, the second outlet of the heat storage tank 2 communicates with the inlet of the air conditioner terminal 11, the third outlet of the heat storage tank 2 communicates with the first inlet of the evaporator 5, and evaporates The second outlet of the condenser 5 communicates with the inlet of the expansion valve 6, the outlet of the expansion valve 6 communicates with the first inlet of the condenser 9, the first outlet of the condenser 9 communicates with the first inlet of the four-way reversing valve 8, and the four-way The first outlet of the reversing valve 8 communicates with the inlet of the compressor 7, the first outlet of the compressor 7 communicates with the second inlet of the four-way reversing valve 8, and the second outlet of the four-way reversing valve 8 communicates with the evaporator The second inlet of 5 is communicated, the third inlet of evaporator 5 is communicated with water intake well 3, and the third outlet of evaporator 5 is communicated with return water well 4;

The second outlet of the condenser 9 communicates with the inlet of the air-conditioning terminal 11, the second inlet of the condenser 9 communicates with the outlet of the air-conditioning terminal 11, and the outlet of the air-conditioning terminal 11 also communicates with the first outlet of the evaporator 5 through the third circulating water pump 16 The air conditioner terminal 11 is connected to the inlet and outlet of the condenser 9 with a thermometer 19 and a pressure gauge 20. The inlet of the air conditioner terminal 11 is also connected to the water supply pipeline 25 of the heating network, and the outlet of the air conditioner terminal 11 is also connected to the heating network return line. The water pipeline 24 communicates.

Further, this embodiment also includes a first temperature control valve 13 and a second temperature control valve 14, the first temperature control valve 13 is arranged on the communication pipeline between the hot water storage tank 2 and the air conditioner terminal 11, and the second temperature control valve 14 It is arranged on the communication pipeline between the hot water storage tank 2 and the evaporator 5 .

This embodiment also includes a first gate valve 17 and a second gate valve 18, the first gate valve 17 is arranged on the communication pipeline between the air conditioner terminal 11 and the evaporator 5, and the second gate valve 18 is arranged on the communication pipeline between the air conditioner terminal 11 and the condenser 9 . A branch is added between the circulating water pump 16 and the air conditioner terminal 11, and a make-up water pump 21 is added on the branch to provide make-up water for the network. A third temperature control valve 22 and a fourth temperature control valve 23 are respectively added at the inlet and outlet of the air conditioner terminal 11. The third temperature control valve 22 communicates with the return water pipe of the air conditioner terminal 11 and the return water pipeline 24 of the heating network. The control valve 23 communicates with the water inlet pipe of the air conditioner terminal 11 and the water supply pipeline 25 of the heating network.

In this embodiment, the heat pipe heat exchanger 1 is a gas-liquid heat pipe heat exchanger, and the heat storage tank 2 is a phase change heat storage tank.

In order to meet the heating demand, an auxiliary heater 10 is also included, and the auxiliary heater 10 is arranged on the domestic hot water pipeline.

In winter, the heat pipe heat exchanger 1 recovers the heat from the air outlet of the station and stores it in the hot water storage tank 2. When the temperature of the water in the water tank reaches the operating temperature of the system above 40°C, the first temperature control valve 13 senses and opens, and the first The gate valve 17 is opened, and the heat recovery cycle is given priority at this time to provide heat for the end of the air conditioner, and the return water flows into the heat exchanger 1 to continue to participate in the cycle process; when the water temperature in the heat storage tank 2 is lower than 40°C, the first temperature control valve 13 is closed, the second temperature control valve 14 is sensed and opened, the second gate valve 18 is opened, the hot water in the storage tank 2 is used as the heat source of the water source heat pump to carry out the heating cycle, and the return water flows into the heat exchanger 1 to continue to participate in the cycle process; When the temperature in the hot water storage tank is lower than 10°C, the temperature control valve 14 is closed, the third temperature control valve 22 and the fourth temperature control valve 23 are opened, and the outlet water of the heat pump passes through the heat network for heat exchange and then supplies heat to the end. The outlet of the hot water storage tank 2 is connected to the domestic hot water pipeline to provide 24-hour hot water for the building. When the water temperature is insufficient, the auxiliary heater heats the hot water to meet the domestic water supply demand. In summer, the temperature control valves are all closed, and the water source heat pump is operated alone to provide cooling for the building, and the exhaust air heat recovered by the heat pipe heat exchanger 1 is all used to provide domestic water. The supply water pump 21 supplements the energy lost during the system operation. The thermometer 19 and the pressure gauge 20 are installed on the inlet and outlet pipelines of the terminal air conditioner 11 to check whether the system is running normally.

The working process of the station exhaust air-water source heat pump and heating network complementary joint heating air conditioning system in this embodiment mainly includes three parts of the heating process: the heating cycle process of the waste heat recovery hot water, and the heating of the waste heat recovery hot water as the heat source of the water source heat pump Circulation process, heating cycle process of heating network auxiliary heating, and make-up water supply process.

①The heating cycle process of hot water with waste heat recovery: the hot air at the air outlet of the station flows through the heat pipe heat exchanger 1 for heat exchange, and the hot water generated enters the hot water storage tank 2. When the temperature in the water tank exceeds the operating temperature of the system by 40°C , the first temperature control valve 13 is opened, the first gate valve 17 is opened, and the waste heat circulation process is preferentially run to heat the building, and the return water flows into the heat pipe heat exchanger 1 for recirculation.

②The heating cycle process of hot water recovered from waste heat as the heat source of the water source heat pump: when the temperature of the hot water in the storage tank 2 is 40°C lower than the operating temperature of the system, the first temperature control valve 13 is closed, the second temperature control valve 14 is opened, and the second The gate valve 18 is opened, and the hot water in the hot water storage tank 2 circulates as the low-level heat source of the water source heat pump to provide heat for the building, and the return water flows into the heat pipe heat exchanger 1 through the second gate valve 18 for recirculation.

③ Heating circulation process of heating network auxiliary heating: when the temperature of the hot water in the hot water storage tank 2 is 10°C lower than the underground water temperature, the second temperature control valve 14 is closed, the third temperature control valve 22 and the fourth temperature control valve 23 are opened, The water from the heat pump passes through the heat network for heat exchange and then supplies heat to the terminal.

④ Make-up water supply process: During system operation, make-up water is added to the system through the make-up water pump 21 as needed to replenish the energy lost during system operation.

The above-described embodiments are only preferred specific implementations of the present utility model, and the protection scope of the present utility model is not limited thereto. Any skilled person in the art can obviously obtain the technology within the technical scope disclosed in the utility model Simple changes or equivalent replacements of the schemes all belong to the protection scope of the present utility model.

Claims (8)

1. the air-conditioning system of a kind of station air draft-water resource heat pump and heat supply network complementation combined heat, it is characterised in that changed including heat pipe Hot device (1), hot water storage tank (2), water intake well (3), back water well (4), evaporator (5), expansion valve (6), compressor (7), four-way change To valve (8), condenser (9), tail end air conditioner (11), first circulation water pump (12), second circulation water pump (15), the 3rd water circulating pump (16), thermometer (19), pressure gauge (20), heat supply network water return pipeline (24) and heat supply network supply channel (25)；

The outlet of the heat exchange of heat pipe (1) connects with the entrance of the hot water storage tank (2), and heat exchange of heat pipe (1) enters Mouth is connected by the first circulation water pump (12) with the first outlet of the evaporator (5), and the first of the hot water storage tank (2) Export by the second circulation water pump (15) and domestic hot-water's pipeline connection, the second outlet of the hot water storage tank (2) and institute The entrance connection of tail end air conditioner (11) is stated, the 3rd outlet of the hot water storage tank (2) and the first entrance of the evaporator (5) connect Logical, the second outlet of the evaporator (5) connects with the entrance of the expansion valve (6), the outlet of the expansion valve (6) with it is described The first entrance connection of condenser (9), the first outlet of the condenser (9) and the first entrance of the four-way reversing valve (8) Connection, the first outlet of the four-way reversing valve (8) connect with the entrance of the compressor (7), and the first of the compressor (7) Outlet connects with the second entrance of the four-way reversing valve (8), second outlet and the evaporator of the four-way reversing valve (8) (5) second entrance connection, the 3rd entrance of the evaporator (5) connect with the water intake well (3), the evaporator (5) 3rd outlet connects with the back water well (4)；

The second outlet of the condenser (9) connects with the entrance of the tail end air conditioner (11), and the second of the condenser (9) enters Mouth and the outlet of the tail end air conditioner (11), the outlet of the tail end air conditioner (11) also passes through the 3rd water circulating pump (16) first outlet with the evaporator (5) connects, and the tail end air conditioner (11) connects with the inlet and outlet of the condenser (9) Be respectively connected with the thermometer (19) and the pressure gauge (20) on pipeline, the entrance of the tail end air conditioner (11) also with the heat Net supply channel (25) connects, and the outlet of the tail end air conditioner (11) also connects with the heat supply network water return pipeline (24).

2. the air-conditioning system of station air draft-water resource heat pump according to claim 1 and heat supply network complementation combined heat, its feature It is, in addition to the first temperature-sensing valve (13) and the second temperature-sensing valve (14), first temperature-sensing valve (13) are arranged on the accumulation of heat water On the connecting pipeline of case (2) and the tail end air conditioner (11), second temperature-sensing valve (14) be arranged on the hot water storage tank (2) with On the connecting pipeline of the evaporator (5).

3. the air-conditioning system of station air draft-water resource heat pump according to claim 1 and heat supply network complementation combined heat, its feature It is, in addition to the first gate valve (17) and the second gate valve (18), first gate valve (17) are arranged on the tail end air conditioner (11) With on the connecting pipeline of the evaporator (5), second gate valve (18) is arranged on the tail end air conditioner (11) and the condensation On the connecting pipeline of device (9).

4. the air-conditioning system of station air draft-water resource heat pump according to claim 1 and heat supply network complementation combined heat, its feature It is, branch road is set up between the 3rd water circulating pump (16) and the tail end air conditioner (11), supply is set up on the branch road Water pump (21) provides make-up water for networking.

5. the air-conditioning system of station air draft-water resource heat pump according to claim 1 and heat supply network complementation combined heat, its feature It is, is set up respectively in the entrance and exit of the tail end air conditioner (11) and put the 3rd temperature-sensing valve (22) and the 4th temperature-sensing valve (23), 3rd temperature-sensing valve (22) connects with the return pipe and heat supply network water return pipeline (24) of the tail end air conditioner (11), the 4th temperature Control valve (23) connects with the water inlet pipe and heat supply network supply channel (25) of the tail end air conditioner (11).

6. the air-conditioning system of station air draft-water resource heat pump according to claim 1 and heat supply network complementation combined heat, its feature It is, the heat exchange of heat pipe (1) is gas-liquid type heat exchange of heat pipe.

7. the air-conditioning system of station air draft-water resource heat pump according to claim 1 and heat supply network complementation combined heat, its feature It is, the hot water storage tank (2) is phase transition thermal storage water tank.

8. the air-conditioning system of station air draft-water resource heat pump according to claim 1 and heat supply network complementation combined heat, its feature It is, in addition to auxiliary heater (10), the auxiliary heater (10) are arranged on domestic hot-water's pipeline.