Secondary circulation type evaporation-condensation natural cooling water chiller and control method thereof

A secondary circulation, natural cooling technology, applied in natural cooling system, control input involving air characteristics, energy-saving heating/cooling, etc. The control method is simple, the operation energy consumption is reduced, and the control method is flexible and changeable.

Inactive Publication Date: 2017-08-04
GUANGDONG SHENLING ENVIRONMENT SYST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the northern region, since the lowest temperature at night in winter is -20~-30°C, and the temperature is even lower in extreme weather, the water cooling method is adopted, and antifreeze measures must be considered for the cooling tower, and the antifreeze effect is general, which is not ideal. It is necessary to add high-concentration antifreeze to the circulating water of the cooling tower and the pipeline, which not only increases the investment but also corrodes the pipeline and equipment

Method used

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  • Secondary circulation type evaporation-condensation natural cooling water chiller and control method thereof
  • Secondary circulation type evaporation-condensation natural cooling water chiller and control method thereof

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Embodiment

[0027] Such as figure 1 with 2 As shown, a secondary cycle evaporative condensation natural cooling chiller includes a mechanical refrigeration system 100 composed of a compressor 110, an evaporative condenser 120, a throttling device 130, and an evaporator 140, and also includes a heat exchange with the evaporator 140. The internal circulation system 200 of the exchange and the secondary circulation system 400 for heat exchange with the internal circulation system 200 through the water-water heat exchanger 700. The natural cooling system 300 that exchanges heat with water, the mechanical refrigeration system 100 , the internal circulation system 200 , the natural cooling system 300 and the secondary circulation system 400 are electrically connected to the controller 500 , and the controller 500 controls the operation of each system.

[0028] The internal circulation system 200 includes an internal circulation liquid inlet pipeline 210 and an internal circulation liquid outle...

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Abstract

The invention relates to the technical field of refrigeration, and discloses a secondary circulation type evaporation-condensation natural cooling water chiller. The secondary circulation type evaporation-condensation natural cooling water chiller comprises a mechanical refrigeration system which is composed of a compressor, a condenser, a flow controller and an evaporator. The secondary circulation type evaporation-condensation natural cooling water chiller further comprises an inner circulation system used for conducting heat exchange with the evaporator and a secondary circulation system used for conducting heat exchange with the inner circulation system through a liquid-liquid heat exchanger. The inner circulation system is provided with a natural cooling system capable of controlling the flowing direction of refrigerant in the inner circulation system so as to conduct heat exchange with the refrigerant. The mechanical refrigeration system, the inner circulation system, the natural cooling system and the secondary circulation system are electrically connected with a controller, and the controller controls all the systems to operate. By means of the secondary circulation type evaporation-condensation natural cooling water chiller, the mechanical refrigeration system, the inner circulation system, the secondary circulation system and the natural cooling system achieve five regulation and control methods and are suitable for meeting the refrigeration needs in different temperature environments, the free cooling capacity can be obtained through the natural cooling system when the outdoor environment temperature is low, usage of the mechanical refrigeration system can be reduced and even stopped completely, and the energy-saving effect is obvious.

Description

technical field [0001] The present application relates to the technical field of refrigeration, in particular to a secondary cycle evaporative condensation natural cooling water chiller and a control method thereof. Background technique [0002] In current communication equipment rooms, especially large data centers, air-cooled chillers are generally used as cold sources to provide chilled water for the indoor terminals of the air-conditioning equipment in the communication equipment room, thereby cooling down the indoor environment of the communication equipment room. Since the communication equipment in the communication room is basically in a state of uninterrupted operation throughout the year, and the heat generation is very large, therefore, the air-cooled chiller used in the communication room generally needs to be refrigerated throughout the year, and the energy consumption is large. The energy efficiency ratio is low. [0003] Moreover, since the air-cooled chiller...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F5/00F24F11/00F24F13/30
CPCF24F5/0003F24F5/001F24F11/30F24F11/83F24F13/30F24F2110/10F24F11/85Y02B30/54
Inventor 梁洁平陈华畅志辉高芬陈刚
Owner GUANGDONG SHENLING ENVIRONMENT SYST CO LTD
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