CN204963288U - Use lithium bromide absorption formula at solar energy and water source to heat, refrigerating plant - Google Patents

Abstract

The utility model relates to a lithium bromide absorption heating and cooling device using solar energy and water sources. The first circuit of the hot water tank communicates with the solar collector plate through the first valve and the first hot water pump, and the second circuit communicates with the heating pipeline of the generator through the second valve and the second hot water pump; the first circuit of the generator absorbs The absorbent outlet of the condenser communicates with the absorbent inlet of the condenser through the third valve, the absorbent outlet of the condenser communicates with the absorbent inlet of the evaporator through the expansion valve, the absorbent outlet of the evaporator communicates with the absorber, and the absorbent of the absorber enters The outlet is communicated with the fourth valve, the solution pump and the solution heat exchanger through one pipeline, and the other pipeline of the solution heat exchanger is communicated with the second absorbent inlet and outlet of the generator; the cooling water inlet and outlet of the evaporator is connected through the first The five valves, the first cold water pump communicate with one pipeline of the heat exchanger, and the other pipeline of the heat exchanger communicates with the outdoor water source through the sixth valve and the second cold water pump.

Description

A lithium bromide absorption heating and cooling device using solar energy and water source

technical field

The utility model relates to an air conditioner, in particular to a lithium bromide absorption heating and cooling device using solar energy and water sources.

Background technique

At present, under the advocacy of national energy conservation and emission reduction, reducing building energy consumption, especially air-conditioning energy consumption is particularly important, so finding new renewable energy has become the research focus of HVAC workers. my country is located in the eastern part of the Eurasian continent in the northern hemisphere and has relatively rich solar energy resources. On the other hand, my country's surface water resources are relatively rich, ranking sixth in the world. Therefore, solar resources and surface water contain energy that can be used in the air conditioning industry. Lithium bromide absorption heat pump has the characteristics of low power consumption, strong energy applicability and environmental protection, and is widely used in the field of air conditioning.

Due to the limitations of heat pumps driven by a single heat source, their development is restricted. If two or more heat pumps of different forms are combined to operate, it can not only overcome the problems of insufficient heating capacity and unstable operation of a single heat source, but also have good complementarity and matching. At present, the combined heat pump system mainly exists in the joint operation mode of dual heat sources, mainly including solar-soil source heat pumps, solar-air source heat pumps, solar-water source heat pumps, and solar-lithium bromide absorption heat pumps. These dual heat source combined heat pumps are better The problem of insufficient heat supply from a single heat source is solved. However, due to their low energy efficiency, the range of applications is limited.

Contents of the invention

In order to overcome the shortcomings of the prior art, the utility model provides a lithium bromide absorption heating and cooling device using solar energy and water source. It has simple structure, small investment, small footprint and easy maintenance.

The technical solution adopted by the utility model to solve the technical problem is: the first loop of the hot water tank is sealed and communicated with the solar heat collecting plate through the first valve and the first hot water pump, and the second loop is connected with the solar heat collecting plate through the second valve and the second hot water pump. The heating pipeline of the generator is sealed and communicated; the first absorbent outlet of the generator is sealed and communicated with the absorbent inlet of the condenser through the third valve, and the absorbent outlet of the condenser is sealed and communicated with the absorbent inlet of the evaporator through an expansion valve , the absorbent outlet of the evaporator is in sealing communication with the absorber, the absorbent inlet and outlet of the absorber are in communication with the fourth valve, the solution pump and one pipeline of the solution heat exchanger, and the other pipeline of the solution heat exchanger is in communication with the generator The inlet and outlet of the second absorbent of the evaporator are sealed and communicated; the inlet and outlet of cooling water of the evaporator are sealed and communicated with one pipeline of the heat exchanger through the fifth valve and the first cold water pump, and the other pipeline of the heat exchanger passes through the sixth The valve and the second cold water pump are in sealed communication with the outdoor water source.

The utility model has the following advantages: 1), use lithium bromide absorption heat pump and water source heat pump system at the same time, unify the equipment of both, simple system, low initial investment; 2), stable operation; 3), easy maintenance and repair; 4) ,Small footprint.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is the utility model schematic diagram.

detailed description

As shown in Figure 1, the first circuit of the hot water tank 4 is sealed and communicated with the solar collector plate 1 through the first valve 3 and the first hot water pump 2, and the second circuit is connected with the generator through the second valve 6 and the second hot water pump 5. The heating pipeline of 8 is sealed and communicated; the first absorbent outlet of the generator 8 is sealed and communicated with the absorbent inlet of the condenser 13 through the third valve 12, and the absorbent outlet of the condenser 13 is connected with the absorbent of the evaporator 15 through the expansion valve 14 The absorbent inlet is sealed and connected, the absorbent outlet of the evaporator 15 is sealed and connected with the absorber 19, and the absorbent inlet and outlet of the absorber 19 are connected with the fourth valve 17, the solution pump 18 and the solution heat exchanger 16 through a pipe sealed connection, and the solution The other pipeline of the heat exchanger 16 is in sealing communication with the second absorbent inlet and outlet of the generator 8; the cooling water inlet and outlet of the evaporator 15 are connected to the heat exchanger through the fifth valve 21 and the first cold water pump 20. One pipeline of 22 is sealed and communicated, and the other pipeline of heat exchanger 22 is sealed and communicated with outdoor water source 25 through the sixth valve 23 and the second cold water pump 24 .

The auxiliary heater 7 is connected in series between the second hot water pump 5 and the generator 8; the second absorbent outlet of the generator 8 passes through the seventh valve 9 and the absorbent inlet of the condenser 13 Sealed communication, the inlet and outlet of the third absorbent of the generator 8 are in sealed communication with the compressor 10 through the eighth valve 11 . The thermal energy of the compressor can be used at a low pressure to improve the cycle efficiency of the absorbent and make up for the lack of heat supply capacity of the solar collector plate. The principle is: when the temperature of the hot water coming out of the hot water tank 4 is high, the third valve 12 is opened, the seventh valve 9 and the eighth valve 11 are closed, and the compressor 10 is not running at this moment. When the temperature of the hot water coming out of the hot water tank 12 is low, close the third valve 12, open the seventh valve 9 and the eighth valve 11, at this moment the compressor 10 runs, and the steam coming out of the generator 8 is all compressed The steam is compressed to a state higher than the generation temperature, and the compressed steam releases heat in the generator 10, and then enters the condenser 13 through the seventh valve 9.

A sprinkler 26 is fixed on the absorbent outlet in the absorber 19 . The absorption efficiency of the lithium bromide solution can be increased, so that the lithium bromide solution from the solution heat exchanger 16 enters in the form of a spray in the absorber 19, and the lithium bromide solution absorbs the heat generated by itself while absorbing the water vapor and rises. temperature. The heat exchange area of the lithium bromide solution is increased, thereby increasing the absorption efficiency.

The change of lithium bromide solution concentration is used to obtain cold and heat. The main working medium in the device is lithium bromide solution and water, among which lithium bromide is the absorbent and water is the refrigerant. Utilize the solar thermal collector plate 1 to convert solar energy into thermal energy to heat water, and the hot water coming out of the solar thermal collector plate is pressurized into the hot water tank 4 for storage through the hot water pump. The hot water stored in the hot water tank 4 is used to heat the lithium bromide solution in the generator 8, decomposes the refrigerant vapor, and enters the condenser 13. In the condenser 13, the refrigerant vapor is cooled and condensed into a liquid, and then passes through the expansion valve 14 Reduce the pressure and send it to the evaporator 15. The absorbent in the evaporator 15 absorbs the heat from the outdoor water source 25 and then evaporates. The evaporated absorbent enters the absorber 19 and is absorbed by the concentrated lithium bromide solution from the generator 8. The exchanger 16 enters the generator 19 for evaporation, thereby forming a cycle.

Claims (3)

1. one kind uses that the suction-type lithium bromide at solar energy and water source heats, refrigerating plant, it is characterized in that: boiler (4) first loop is sealed with solar heat-collection plate (1) communicated by the first valve (3), the first heat-exchanger pump (2), second servo loop is sealed with the heating pipe line of generator (8) communicated by the second valve (6), the second heat-exchanger pump (5), the first via absorbent outlet of generator (8) is communicated with the absorbent inlet seal of condenser (13) by the 3rd valve (12), the absorbent outlet of condenser (13) is communicated by the absorbent inlet seal of expansion valve (14) with evaporimeter (15), the absorbent outlet of evaporimeter (15) seals with absorber (19) and communicates, the absorbent of absorber (19) import and export by with the 4th valve (17), solution pump (18) communicates with solution heat exchanger (16) tunnel seal for pipe joints, another road pipeline of solution heat exchanger (16) is imported and exported sealing with the second road absorbent of described generator (8) and is communicated, the cooling water outlet and inlet of described evaporimeter (15) is communicated with a road seal for pipe joints of heat exchanger (22) by the 5th valve (21), the first water supply pump (20), and another road pipeline of heat exchanger (22) is sealed with outdoor water source (25) communicated by the 6th valve (23), the second water supply pump (24).

2. the suction-type lithium bromide at use solar energy according to claim 1 and water source heat, refrigerating plant, it is characterized in that: described the second heat-exchanger pump (5) is connected in series auxiliary heater (7) with between generator (8); Second road absorbent outlet of described generator (8) is entered inlet seal by the 7th valve (9) with the absorbent of described condenser (13) and is communicated, and the 3rd road absorbent of generator (8) is imported and exported and communicated by the 8th valve (11), compressor (10) sealing.

3. the suction-type lithium bromide at use solar energy according to claim 1 and water source heat, refrigerating plant, it is characterized in that: the upper fixing spray thrower (26) of described absorber (19) inner absorbent outlet.