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Integrated ice cold-storing machine unit

An ice storage and unit technology, applied in refrigerators, compressors, refrigeration and liquefaction, etc., can solve the problems of many ice storage air conditioning systems, large installation and debugging workload, and high engineering costs, saving installation space and area. , The effect of convenient debugging and shortened construction period

Inactive Publication Date: 2002-11-20
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large number of equipment and complex pipelines of the ice storage air-conditioning system, compared with the ordinary air-conditioning system, the on-site construction, installation and commissioning workload is heavy and the work is difficult, resulting in a long construction period, difficulty in guaranteeing system performance, and high project cost; and Because the optimal operation of the ice storage system is directly related to factors such as the weather of the next day, the load characteristics of the building, and the characteristics of cold storage and cooling of the system, special requirements are put forward for the engineers and technicians who design the cold storage system and control system

Method used

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  • Integrated ice cold-storing machine unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] According to different forms of ice storage systems, ice storage units can be divided into four types: single pump in series, double pump in series, single heat exchanger in parallel and double heat exchanger in parallel. Example 1: An integrated ice storage unit in the form of a single pump in series:

[0033] figure 1 It is the connection diagram of the integrated ice storage unit in the form of series single pump.

[0034] In the refrigerant circuit, the compressor 4, condenser 1, throttling device 2, and evaporator 3 are connected in sequence to form a closed system through refrigerant connecting pipes.

[0035] In the brine circuit, the brine pump 5, the evaporator 3, the electric control valves 6 and 7, the solenoid valves 8 and 10, the heat exchanger 9, the brine expansion tank 11 and the storage tank are connected through the brine connecting pipe. The ice tank body 13 is connected into a closed system.

[0036] The compressor 4 in the refrigerant circuit, th...

Embodiment 2

[0041] (d) When the ice storage system operates in the combined cooling mode of the chiller and the ice tank (such as Figure 5As shown), the refrigerant cycle runs in the air-conditioning condition, and the refrigerant flows along the direction of the compressor 4, the condenser 1, the throttling device 2, and the evaporator 3, and returns to the compressor 4. The brine pump 5 in the brine circuit is running, the solenoid valve 8 is closed, the solenoid valve 10 is opened, and the electric control valves 6 and 7 are opened to a certain opening degree to control the temperature of the brine entering the heat exchanger 9; After being pressurized by the brine pump 5, the refrigerant flows into the evaporator 3 to absorb the cooling capacity, and then flows into the ice storage tank 13 to melt the ice and get cold, then passes through the electric regulating valve 7 and the secondary refrigerant passing through the electric regulating valve 6 After the agent is mixed, it enters t...

Embodiment 3

[0044] In various operating modes, the flow direction of the brine is the same as that in Embodiment 1. Embodiment 3: Integrated ice storage unit in the form of parallel single heat exchanger:

[0045] Figure 7 It is the connection diagram of the integrated ice storage unit in the form of parallel single heat exchanger of the present invention.

[0046] and figure 1 The integrated ice storage unit in the form of a single pump in series and Image 6 In order to solve the unnecessary resistance loss in the evaporator under the independent cooling mode of the ice tank, and to increase the inlet temperature of the ice tank under the joint cooling mode of the ice tank cooler , improve the cooling rate of the ice tank, and change the original serial structure of the ice tank and the heat exchanger into a parallel structure.

[0047] (a) When the ice storage system operates in the ice storage mode (such as Figure 8 As shown), the refrigerant cycle runs in the ice storage condi...

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Abstract

The present invention relates to an integrated ice cold-storing machine unit, and is characterized by that the compressor, condenser, throttling device, evaporator, ice-storing groove body, cold-carrying agent pump, heat exchanger, cold-carrying agent expanding box, electric regulating valve, electromagentic valve, connecting pipeline and electric control box with electric control integrated system are arranged in the box body, and on the box body a pipeline interface connected with air-conditioning refrigerating water system is set, and in the box body one or two cold-carrying pumps can be arranged, and one or two heat-exchangers also can be adopted, the ice groove and the heat exchanger can be series-connected or parallelly-connected.

Description

technical field [0001] The invention belongs to the technical field of refrigeration air conditioning and ice storage, and in particular relates to a structural design of an ice storage unit. Background technique [0002] The ice-storage air-conditioning system uses cheap power during the low-load period of the power grid, such as night power, to store the cold energy produced by the refrigeration system in water through a refrigerant (usually ethylene glycol aqueous solution), and freeze the water into ice; During the high-load period of the power grid with expensive electricity prices, such as daytime, the cold energy in the ice is released to supply cooling to the air-conditioning system, thereby reducing the demand for electricity during the high-load period of the power grid, and realizing the air-conditioning system of "shifting peaks and filling valleys" of the power system. Therefore, this technology has been strongly supported by the power policy and has been rapidl...

Claims

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Application Information

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IPC IPC(8): F24F11/02F25B1/00F25B13/00
Inventor 李先庭邵双全王宝龙石文星田长青赵庆珠林泉标
Owner TSINGHUA UNIV
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