CN218065191U

CN218065191U - Solar energy powered absorption refrigerator system

Info

Publication number: CN218065191U
Application number: CN202220928000.8U
Authority: CN
Inventors: 白会强
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-11-25
Filing date: 2022-04-21
Publication date: 2022-12-16
Anticipated expiration: 2032-04-21

Abstract

The utility model relates to an absorption refrigerator system of solar energy supply, including absorption refrigeration part and solar energy supply part, absorption refrigeration part includes the generator, solar energy supply part includes a plurality of solar energy collection pipes that set up side by side, solar energy supply part still includes the steam generating element, the steam generating element is including setting up the standpipe in solar energy collection pipe, the standpipe is coaxial with solar energy collection pipe to be set up, the steam generating element still includes the water tank that is arranged in supplementing water to the standpipe and the steam collecting box that is arranged in collecting the steam that produces in the standpipe, the lower extreme of each standpipe is sealed, each standpipe upper end passes through pipe connection steam collecting box; the absorption refrigeration part comprises a heating pipe which is arranged in the generator and used for heating the binary solution, the inlet of the heating pipe is connected with the steam collecting box through a pipeline, and the outlet of the heating pipe is connected with the water tank through a pipeline. Compared with the prior art, the refrigeration efficiency is higher and the refrigeration is safer.

Description

Solar energy powered absorption refrigerator system

Technical Field

The utility model belongs to the air conditioning equipment field, concretely relates to absorption refrigerator system of solar energy supply.

Background

Absorption refrigeration is carried out by using a binary solution composed of two substances as a working medium, wherein the two substances have different boiling points under the same pressure, the component with the higher boiling point is called an absorbent, and the component with the lower boiling point is called a refrigerant. Two common absorbent-refrigerant combinations are used: one is lithium bromide-water, which is generally suitable for large central air conditioners; the other is water-ammonia, which is generally suitable for small-sized air conditioners.

The absorption refrigerator comprises a generator, a condenser, an evaporator and an absorber, when a lithium bromide-water solution is heated by heating medium water in the generator during operation by taking the lithium bromide-water as a binary working medium pair, the water in the solution is continuously vaporized; the water vapor enters a condenser and is condensed after being cooled by cooling water; along with the continuous vaporization of water, the concentration of the solution in the generator continuously rises and enters the absorber; when the water in the condenser enters the evaporator through the throttle valve, the water is rapidly expanded and vaporized, and a large amount of heat of refrigerant water in the evaporator is absorbed in the vaporization process, so that the purposes of temperature reduction and refrigeration are achieved; in the process, low-temperature water vapor enters the absorber, is absorbed by the concentrated lithium bromide solution in the absorber, the concentration of the solution is gradually reduced, and the solution is pumped back to the generator by the solution pump to complete the whole cycle.

The higher the temperature of the heating medium water is, the higher the coefficient of performance of the refrigerating machine is, and thus the higher the refrigeration efficiency of the air conditioning system is. The conventional absorption refrigerator system mainly comprises an absorption refrigerator, an air conditioning box, a boiler and the like, and a solar energy absorption refrigerator system is additionally provided with a solar heat collector, a water storage box, an automatic control system and the like on the basis.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an absorption refrigerator system of solar energy supply that refrigeration efficiency is higher, safer.

In order to achieve the above object, the absorption refrigerator system with solar energy supply of the present invention adopts the following technical solution: the absorption refrigerating machine system powered by solar energy comprises an absorption refrigerating part and a solar energy power supply part, wherein the absorption refrigerating part comprises a generator, the solar energy power supply part comprises a plurality of solar heat collecting pipes which are arranged in parallel, the solar energy power supply part also comprises a steam generating element, the steam generating element comprises a water storage pipe arranged in the solar heat collecting pipes, and the water storage pipe and the solar heat collecting pipes are coaxially arranged; the steam generating element also comprises a water tank for supplementing water into the water storage pipes and a steam collecting box for collecting steam generated in the water storage pipes, the lower ends of the water storage pipes are closed, and the upper ends of the water storage pipes are connected with the steam collecting box through pipelines; the absorption refrigeration part comprises a heating pipe which is arranged in the generator and used for heating the binary solution, the inlet of the heating pipe is connected with the steam collecting box through a pipeline, and the outlet of the heating pipe is connected with the water tank through a pipeline.

Has the advantages that: during work, the solar heat collecting pipe heats the water storage pipe, high-temperature and high-pressure steam generated in the water storage pipe enters the steam collecting box through the pipeline, the steam in the steam collecting box enters the heating pipe through the pipeline to heat binary solution in the generator, water in the binary solution is continuously vaporized when the time is doubled by taking lithium bromide-water as a binary working medium, and the steam enters the condenser and is condensed after being cooled by cooling water. Along with the continuous vaporization of water, the concentration of the solution in the generator continuously rises and enters the absorber; when the water in the condenser enters the evaporator through the throttle valve, it expands rapidly and vaporizes, and absorbs a large amount of heat of refrigerant water in the evaporator in the process of vaporization, thus achieving cooling and refrigeration. Compared with the prior art, the refrigeration efficiency is higher, the refrigeration is safer, a heat pump for heating binary solution in the prior art is omitted, the power consumption is reduced, and the maintenance cost of the heat pump is saved.

Furthermore, the heating pipe is of a coil pipe structure with a central line extending along the vertical direction, the generator is arranged higher than the water tank, and a return pipe is arranged between the lower end of the heating pipe and the water tank. High-temperature and high-pressure steam in the heating pipe is condensed into water and then flows back to the water tank through the return pipe to form steam-water circulation.

Furthermore, the steam collecting box, the pipeline between the steam collecting box and the water storage pipe and/or the pipeline between the steam collecting box and the heating pipe are/is provided with a heat insulating layer. During working, redundant high-temperature high-pressure steam generated in the daytime can be kept warm for working at night.

Furthermore, the surface of the water storage pipe is provided with a plurality of annular fins for heat collection, and the annular fins are arranged in parallel at intervals in the extension direction of the central line of the water storage pipe. The heating efficiency of the solar heat collecting pipe to the water storage pipe is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and obviously, the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts;

FIG. 1 is a schematic block diagram of an embodiment of a solar powered absorption chiller system according to the present invention;

FIG. 2 is a schematic diagram of the structure of a solar powered portion;

FIG. 3 is an enlarged view at A in FIG. 2;

fig. 4 is an enlarged view at B in fig. 2.

In the figure: 110-generator, 120-heating pipe, 210-solar heat collecting pipe, 220-water storage pipe, 221-annular fin, 222-pressure balance pipe, 230-water tank, 240-steam collecting box, 250-return pipe and 300-insulating layer.

Detailed Description

In order to make the technical purpose, technical solution and advantageous effects of the present invention clearer, the technical solution of the present invention is further described below with reference to the accompanying drawings and specific embodiments.

The specific embodiment of the solar energy powered absorption refrigeration system, as shown in fig. 1 to fig. 4, includes an absorption refrigeration part and a solar energy powered part, the absorption refrigeration part in this embodiment uses water-ammonia as binary working medium, and compared with a refrigeration system using "lithium bromide-water" as working medium, the absorption refrigeration part in this embodiment can obtain lower low temperature (-below 50 ℃).

The absorption refrigeration part comprises a generator 110, the solar energy supply part comprises a plurality of solar heat collecting pipes 210 arranged in parallel, the solar energy supply part further comprises a steam generation element, the steam generation element comprises a water storage pipe 220 arranged in the solar heat collecting pipes 210, and the water storage pipe 220 and the solar heat collecting pipes 210 are coaxially arranged.

The steam generating unit further includes a water tank 230 for supplementing water into the water storage pipes 220 and a steam collection tank 240 for collecting steam generated in the water storage pipes 220, each of the water storage pipes 220 being closed at a lower end thereof, and each of the water storage pipes 220 being connected at an upper end thereof to the steam collection tank 240 by a pipe. A pressure equalizing pipe 222 is provided between the water tank 230 and the steam collection tank 240, and the steam collection tank 240 is higher than the water tank 230, and the water tank 230 is higher than the solar collecting pipe 210.

The absorption refrigeration part includes a heating pipe 120 disposed in the generator 110 for heating the binary solution, an inlet of the heating pipe 120 is connected to the vapor collection tank 240 through a pipe, and an outlet of the heating pipe 120 is connected to the water tank 230 through a pipe. The heating pipe 120 is a coil structure with a central line extending in the up-down direction, the generator 110 is disposed higher than the water tank 230, and a return pipe 250 is disposed between the lower end of the heating pipe 120 and the water tank 230. After the high-temperature and high-pressure steam in the heating pipe 120 is condensed into water during operation, the water is returned to the water tank 230 through the return pipe 250, and a steam-water cycle is formed.

The steam collecting tank 240, the pipe between the steam collecting tank 240 and the water storage pipe 220, and the pipe between the steam collecting tank 240 and the heating pipe 120 are all provided with an insulating layer 300. During working, redundant high-temperature and high-pressure steam generated in the daytime can be insulated for use in night working. In addition, a plurality of annular fins 221 for collecting heat are provided on the surface of the water storage tube 220, and the annular fins 221 are arranged in parallel at intervals in the extending direction of the central line of the water storage tube 220. The heating efficiency of the solar heat collecting pipe to the water storage pipe is improved.

In operation, the solar heat collecting pipe 210 heats the water storage pipes 220, high-temperature and high-pressure steam generated in each water storage pipe 220 is collected into the steam collecting tank 240 through a pipeline, the steam in the steam collecting tank 240 enters the heating pipe 120 through a pipeline to heat binary solution (lithium bromide-water or water-ammonia) in the generator 110, a refrigerant in the binary solution is continuously vaporized, and the refrigerant steam enters the condenser and is condensed after being cooled by cooling water. As the refrigerant is continuously vaporized, the concentration of the solution in the generator 110 continuously increases and enters the absorber; when the liquid refrigerant in the condenser enters the evaporator through the throttle valve, it expands rapidly and vaporizes, and absorbs a large amount of heat of refrigerant water in the evaporator in the process of vaporization, thus achieving cooling and refrigeration. Compared with the prior art, the refrigeration efficiency is higher, the refrigeration is safer, a heat pump for heating binary solution in the prior art is omitted, the power consumption is reduced, and the maintenance cost of the heat pump is saved.

Finally, it should be noted that: the above-mentioned embodiments are only used for illustrating but not limiting the technical solution of the present invention, and any equivalent replacement and modification or partial replacement which do not depart from the spirit and scope of the present invention should be covered within the protection scope of the claims of the present invention.

Claims

1. A solar powered absorption chiller system includes an absorption chiller portion and a solar powered portion, absorption refrigeration part includes the generator, and solar energy supply part includes a plurality of solar energy collection pipes that set up side by side, its characterized in that: the solar energy supply part also comprises a steam generating element, the steam generating element comprises a water storage pipe arranged in the solar heat collecting pipe, the water storage pipe and the solar heat collecting pipe are coaxially arranged, the steam generating element also comprises a water tank for supplementing water into the water storage pipe and a steam collecting box for collecting steam generated in the water storage pipe, the lower end of each water storage pipe is closed, and the upper end of each water storage pipe is connected with the steam collecting box through a pipeline; the absorption refrigeration part comprises a heating pipe which is arranged in the generator and used for heating the binary solution, the inlet of the heating pipe is connected with the steam collecting box through a pipeline, and the outlet of the heating pipe is connected with the water tank through a pipeline.

2. The solar powered absorption chiller system of claim 1 wherein: the heating pipe is a coil pipe structure with a central line extending along the up-down direction, the generator is arranged higher than the water tank, and a return pipe is arranged between the lower end of the heating pipe and the water tank.

3. The solar powered absorption chiller system of claim 1 wherein: and the steam collecting box, the pipeline between the steam collecting box and the water storage pipe and/or the pipeline between the steam collecting box and the heating pipe are/is provided with a heat-insulating layer.

4. A solar powered absorption chiller system according to any one of claims 1 to 3 wherein: the surface of the water storage pipe is provided with a plurality of annular fins for collecting heat, and the annular fins are arranged in parallel at intervals in the extension direction of the central line of the water storage pipe.