CN214223232U

CN214223232U - Energy heating system based on solar energy-heat pump coupling

Info

Publication number: CN214223232U
Application number: CN202021351338.9U
Authority: CN
Inventors: 梁精龙; 王洪利
Original assignee: North China University of Science and Technology
Current assignee: North China University of Science and Technology
Priority date: 2020-07-10
Filing date: 2020-07-10
Publication date: 2021-09-17
Anticipated expiration: 2030-07-10

Abstract

The utility model belongs to the field of new energy development, in particular to a solar-heat pump coupling energy heating system, comprising a solar collector, and a water outlet of the solar collector is connected to a first water inlet of a hot water tank, The first water outlet of the hot water collection tank is connected with the water inlet of the heating device, the water outlet of the heating device is connected with the second water inlet of the hot water collection tank, and the second water outlet of the hot water collection tank is connected with the inlet of the solar collector. Water port connection; also includes a heat pump compressor, the inlet and outlet of the heat pump compressor are respectively connected with the outlet of the evaporative condenser and the inlet of the condensing evaporator, and the outlet of the condensing evaporator is connected with the inlet of the evaporative condenser; The hot water tanks are equipped with tap water supply ports and tap water overflow ports. The solar-heat pump coupling-based energy heating system provided by the utility model has high source utilization, saves energy, reduces haze emission, and ensures the normal operation of the heating system. The utility model is suitable for heating on the user side.

Description

Energy heating system based on solar energy-heat pump coupling

Technical Field

The utility model belongs to the technical field of new forms of energy development, relate to heating system, specifically speaking are based on solar energy-heat pump coupling is with ability heating system.

Background

At present, heating situations in winter are diversified. Urban residents mainly use central heating, heat sources mainly come from coal and often come from waste heat of power plants, the hot users are sent to thermal power companies after being pressurized and heated by boilers, and in vast rural areas and suburbs junctions, due to the fact that the hot users live in scattered houses, heating infrastructures are behind, the heat preservation effect of the residences of the users is generally poor, a central heating mode is not suitable to be popularized, and a household coal-fired heating mode is mainly adopted.

The centralized heating mode is convenient to manage, the heating efficiency is high, but the effect of removing the micron-sized haze particles still has great limitation, and the only feasible way is to use less coal, so that the emission of the micron-sized particles is reduced. The household coal-fired heating mode has obvious defects in pollutant emission control and heating efficiency improvement.

Aiming at the serious haze problem of coal-fired heating, coal-to-electricity and coal-to-gas are carried out at the same time. The coal changes gas, namely replaces the coal with the natural gas, but the coal changes gas running cost to be higher relatively, especially has certain degree of difficulty in rural popularization, in addition, the haze problem can not fundamentally be solved to the coal changes gas scheme, this has just deviated from the original intention of coal changes gas. The coal changes the electricity, namely replaces coal with air source heat pump, and air source heat pump belongs to clean efficient energy equipment, has the significance in eliminating the novel energy mode of coal-fired exploration, but air source heat pump heating, the initial investment is generally higher to when ambient temperature is lower, air source heat pump heating efficiency is lower, even, its operation also is difficult to obtain the guarantee. Although a single solar heating system can achieve the purpose of heating under certain conditions, solar heating is difficult to meet the requirements in rainy and snowy days, continuous cloudy days or extremely low ambient temperature.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a based on solar energy-heat pump coupling is with ability heating system, utilize the high-efficient energy-conserving characteristics of water source heat pump and solar energy concurrent heating, realize the normal operating of heat pump under the low ambient temperature, guarantee the continuity and the stability of vast heating user heat supply, simultaneously, reduce haze and energy saving.

The utility model discloses a realize above-mentioned purpose, the technical scheme who adopts as follows:

an energy heating system based on solar energy-heat pump coupling comprises a solar heat collecting system and a water source heat pump system, wherein the solar heat collecting system comprises a solar heat collector, a water outlet of the solar heat collector is connected with a first water inlet of a heat collecting water tank, a first water outlet of the heat collecting water tank is connected with a water inlet of a heating device, a water outlet of the heating device is connected with a second water inlet of the heat collecting water tank, and a second water outlet of the heat collecting water tank is connected with a water inlet of the solar heat collector; the water source heat pump system comprises a heat pump compressor, wherein an inlet and an outlet of the heat pump compressor are respectively connected with an outlet of an evaporation condenser in the heat collection water tank and an inlet of a condensation evaporator in the heat storage water tank, and an outlet of the condensation evaporator in the heat storage water tank is connected with an inlet of the evaporation condenser in the heat collection water tank; the heat storage water tank and the heat collection water tank are both provided with a tap water supply port and a tap water overflow port, each connecting pipeline of the solar heat collection system is provided with a valve for controlling the on-off of the pipeline, and a connecting pipeline of an outlet of a condensation evaporator inside the heat storage water tank and an inlet of an evaporation condenser inside the heat collection water tank in the water source heat pump system is provided with a thermal expansion valve.

As a limitation: and a water pump is arranged on a connecting pipeline between the first water outlet of the heat collecting water tank and the water inlet of the heating device.

As a further limitation: the heat storage water tank and the heat collection water tank are both provided with an electric heater and a liquid level meter.

As yet a further limitation: a mass flow meter is arranged on a connecting pipeline between the second water outlet of the heat collecting water tank and the water inlet of the solar heat collector; and a mass flow meter is arranged on a connecting pipeline between the outlet of the condensing evaporator in the heat storage water tank and the inlet of the evaporating condenser in the heat collection water tank.

As a further limitation: and each connecting pipeline of the water source heat pump system is provided with a pressure sensor and a thermocouple.

As a final definition: the inlet end and the outlet end of the heat pump compressor are both provided with oil separators.

Since the technical scheme is adopted, compared with the prior art, the utility model, the beneficial effect who gains is:

(1) the utility model provides a based on solar energy-heat pump coupling is with ability heating system has adopted the water source heat pump, even can also operate well under the low temperature condition, and energy utilization is high moreover, and the energy saving reduces the haze and discharges, has effectively improved living environment, has ensured heating system extreme weather normal operating;

(2) the utility model provides an energy heating system based on solar energy-heat pump coupling adopts the coupling mode of solar energy collection system and water source heat pump system to heat, and when the solar energy collector is used for heating the heating device in daytime, the heat storage water tank is stored; at night, in rainy and snowy days, continuously cloudy days or extremely low environmental temperature, the water source heat pump heating system is started, and the heat collection water tank is used for heating the heating device, so that the operation is reliable, the working condition is flexibly adjusted, the operation cost is low, and the all-weather uninterrupted heating requirement of a user side is met;

(3) the utility model provides an energy heating system based on solar energy-heat pump coupling, the water pump is arranged on the connecting pipeline of the first water outlet of the heat collecting water tank and the water inlet of the heating device, the heat exchange effect is enhanced, and meanwhile, the smooth proceeding of water circulation is ensured;

(4) the utility model provides a based on solar energy-heat pump coupling is with ability heating system, heat storage water tank and heat collection water tank all are equipped with electric heater and level gauge, open electric heater when the temperature is too low in heat storage water tank and the heat collection water tank, have ensured heating system's operation; the liquid level meter measures the water levels of the heat storage water tank and the heat collection water tank so as to determine the supply amount of tap water; a mass flow meter is arranged on a connecting pipeline between a second water outlet of the heat collection water tank and a water inlet of the solar heat collector, and a connecting pipeline between an outlet of a heat exchanger in the heat storage water tank and an inlet of a heat exchanger in the heat collection water tank, so that the mass flow of liquid can be directly measured; each connecting pipeline of the water source heat pump system is provided with a pressure sensor and a thermocouple, and the temperature and the pressure of liquid are directly detected;

(5) the utility model provides an energy heating system for coupling based on solar energy-heat pump, the inlet end and the outlet end of the heat pump compressor are both provided with oil separators, and the lubricating oil in the high-pressure steam discharged by the heat pump compressor is separated, so as to ensure the safe and efficient operation of the device;

to sum up, the utility model provides a based on solar energy-heat pump coupling is with can heating system source high-usage, the energy saving reduces the haze and discharges, has ensured heating system's normal operating.

The utility model is suitable for a user side heating.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a block diagram of an embodiment of the present invention;

FIG. 2 is a T-s diagram of an embodiment of the present invention;

in the figure: 1. a heat pump compressor; 2-1, a first oil separator; 2-2, a second oil separator; 3. a heat storage water tank; 4. a condensing evaporator; 5-1, a first electric heater; 5-2, a second electric heater; 6-1, a first liquid level meter; 6-2, a second liquid level meter; 7. a thermostatic expansion valve; 8. an evaporative condenser; 9. a heat collecting water tank; 10. a solar heat collector; 11. heating radiators; 12. a water pump; 13-1, a first valve; 13-2, a second valve; 13-3, a third valve; 14-1, a first mass flow meter; 14-2, a second mass flow meter; 15-1, a first pressure sensor; 15-2, a second pressure sensor; 15-3, a third pressure sensor; 15-4, a fourth pressure sensor; 16-1, a first thermocouple; 16-2, a second thermocouple; 16-3, a third thermocouple; 16-4, a fourth thermocouple; 17. and a stop valve.

Detailed Description

Embodiments of the present invention will be described below with reference to the accompanying drawings. It is to be understood that the embodiments described herein are for purposes of illustration and understanding only and are not intended to limit the present invention.

Embodiment is based on solar energy-heat pump coupling is with ability heating system

A solar energy-heat pump coupling-based energy heating system is shown in figure 1 and comprises a solar heat collecting system and a water source heat pump system, wherein the solar heat collecting system comprises a solar heat collector 10, a water outlet of the solar heat collector 10 is connected with a first water inlet of a heat collecting water tank 9, a stop valve 17 is arranged on a connecting pipeline of the solar heat collecting system, a first water outlet of the heat collecting water tank 9 is connected with a water inlet of a heating radiator 11, a first valve 13-1 and a water pump 12 are arranged on the connecting pipeline of the heating radiator 11, a water outlet of the heating radiator 11 is connected with a second water inlet of the heat collecting water tank 9, a second valve 13-2 is arranged on the connecting pipeline of the heating radiator, a second water outlet of the heat collecting water tank 9 is connected with the water inlet of the solar heat collector 10, and a third valve 13-3 and a second mass flow meter 14-2 are arranged on the connecting pipeline of the heating radiator; the water source heat pump system comprises a heat pump compressor 1, wherein an inlet of the heat pump compressor 1 is connected with an outlet of an evaporative condenser 8 in a heat collecting water tank 9, a connecting pipeline of the heat pump compressor 1 is provided with a second oil separator 2-2, a second thermocouple 16-2 and a second pressure sensor 15-2, an outlet of the heat pump compressor 1 is connected with an inlet of a condensing evaporator 4 in the heat storage water tank 3, a connecting pipeline of the heat pump compressor 1 is provided with a first oil separator 2-1, a first thermocouple 16-1 and a first pressure sensor 15-1, an outlet of the condensing evaporator 4 in the heat storage water tank 3 is connected with an inlet of the evaporative condenser 8 in the heat collecting water tank 9, a connecting pipeline of the heat pump compressor is provided with a fourth thermocouple 16-4 and a fourth pressure sensor 15-4 at one side close to the heat collecting water tank 9, and a third thermocouple 16-3 and a third thermocouple pressure sensor 15-3 at one side close to the heat storage water tank 3, the middle part is provided with a thermal expansion valve 7 and a first mass flow meter 14-1; the heat storage water tank 3 and the heat collection water tank 9 are both provided with a tap water supply port and a tap water overflow port, a second electric heater 5-2 and a second liquid level meter 6-2 are arranged in the heat storage water tank 3, and a first electric heater 5-1 and a first liquid level meter 6-1 are arranged in the heat collection water tank 9.

When the energy heating system based on solar energy-heat pump coupling operates, water in a solar heat collector 10 absorbs solar radiation and enters a heat collecting water tank 9 after being heated, part of heat in the heat collecting water tank 9 is absorbed by refrigerant in an internal evaporation condenser 8, the rest heat enters a room radiator 11 to heat the room, the water with the lowered temperature after heat release returns to the heat collecting water tank 9 through a water pump 12, the refrigerant in the evaporation condenser 8 in the heat collecting water tank 9 absorbs the heat and is compressed by a heat pump compressor 1 to be raised in temperature, the heat is released by a condensation evaporator 4 in a heat storage water tank 3, the water in the heat storage water tank 3 is further heated, and the purpose of storing the heat in the heat storage water tank 9 in daytime is achieved. When solar energy can not supply heat, the refrigerant in the condensation evaporator 4 in the heat storage water tank 3 continuously absorbs heat from the heat storage water tank 3, the heat is compressed by the heat pump compressor 1 after being absorbed to form high-temperature high-pressure refrigerant superheated steam, the heat is released by the evaporation condenser 8 in the heat collection water tank 9 to heat hot water in the heat collection water tank 9, the hot water in the heat collection water tank 9 enters a room for heating, and the hot water with the lowered temperature after heating is compressed by the water pump 12 and then returns to the heat collection water tank 9. And when the temperatures in the heat collection water tank 9 and the heat storage water tank 3 are too low, the electric heater 5-1 and/or the electric heater 5-2 are/is started to meet the heating requirement of the system. In the present embodiment, R134a is used as the refrigerant.

As shown in fig. 2, D-a-B-C-D indicates a heating cycle of refrigerant, and H-E-F-G-H indicates a heating cycle of water. In sunny days in the daytime, the refrigerant evaporation process D-A absorbs heat released by hot water in the solar heat collection water tanks H-E, and in the evening or rainy and snowy days, the water heat absorption process G-F in the heat collection water tanks absorbs heat released by the refrigerant condensation heat release process B-C.

Claims

1. An energy heating system based on solar energy-heat pump coupling, characterized in that it comprises a solar heat collection system and a water source heat pump system, the solar heat collection system comprises a solar heat collector, the water outlet of the solar heat collector and a hot water tank The first water inlet of the hot water collection tank is connected to the water inlet of the heating device, the water outlet of the heating device is connected to the second water inlet of the hot water collection tank, and the second water outlet of the hot water collection tank is connected. It is connected with the water inlet of the solar collector; the water source heat pump system includes a heat pump compressor, and the inlet and outlet of the heat pump compressor are respectively connected with the outlet of the evaporative condenser inside the hot water collection tank and the inlet of the condensing evaporator inside the hot water storage tank. The outlet of the condensing evaporator inside the hot water storage tank is connected to the inlet of the evaporative condenser inside the hot water collection tank; the hot water storage tank and the hot water collection tank are both provided with tap water supply ports and tap water overflow ports, and the solar heat collection system is connected to each other. The pipelines are all provided with valves that control the on-off of the pipelines where they are located. In the water source heat pump system, the connection pipeline between the outlet of the condensing evaporator inside the hot water storage tank and the inlet of the evaporative condenser inside the collecting water tank is provided with a thermal expansion valve; Both the tank and the collecting water tank are equipped with electric heaters and level gauges.

2 . The solar-heat pump coupling energy heating system according to claim 1 , wherein a water pump is provided on the connecting pipeline between the first water outlet of the hot water tank and the water inlet of the heating device. 3 .

3. The solar energy-heat pump coupling energy heating system according to claim 1 or 2, wherein a mass flow meter is provided on the connecting pipeline between the second water outlet of the hot water tank and the water inlet of the solar collector; A mass flow meter is provided on the connecting pipeline between the outlet of the condensing evaporator inside the hot water storage tank and the inlet of the evaporative condenser inside the water collecting tank.

4. The solar-heat pump coupling energy heating system according to claim 1 or 2, characterized in that, each connecting pipeline of the water source heat pump system is provided with a pressure sensor and a thermocouple.

5 . The solar-heat pump coupling energy heating system according to claim 3 , wherein each connecting pipeline of the water source heat pump system is provided with a pressure sensor and a thermocouple. 6 .

6. The energy heating system based on solar energy-heat pump coupling according to any one of claims 1, 2, and 5, wherein an oil separator is provided at the inlet end and the outlet end of the heat pump compressor.