Method and device for operating cooling water of air conditioner with large temperature difference

Abstract

The invention relates to the technical field of air-conditioning cooling water systems, and relates to a method and device for operating air-conditioning cooling water with a large temperature difference. The method includes a first mechanical refrigeration chiller, an evaporative refrigeration chiller, and cooling water; There are cooling water channels and frozen water channels; the cooling water channels of at least two first mechanical refrigeration chillers are connected in series and connected in sequence, and the cooling water outlet of the evaporative cooling chillers enters the series-connected cooling water channel under the action of the cooling water pump Cooling water is provided for each first mechanical refrigeration chiller in the cooling water channel of the first mechanical refrigeration chiller. In the area where the relative humidity of the outdoor air is low, the outlet water temperature of the evaporative refrigeration chiller is low, and the outlet water of the evaporative refrigeration chiller is sequentially connected in series through multiple mechanical refrigeration chillers, and the cooling capacity of the cooling water is fully released to avoid cooling. Waste, the evaporative refrigeration chiller operates with a large temperature difference, and the evaporative refrigeration chiller has a high heat transfer efficiency.

Description

technical field [0001] The invention relates to the technical field of air-conditioning cooling water systems, and relates to a method and a device for operating air-conditioning cooling water with a large temperature difference. Background technique [0002] The performance of the evaporative cooling chiller changes with the wet bulb temperature of the outdoor air entering the evaporative cooling chiller. Considering the processing capacity of the evaporative cooling chiller in hot areas with high wet bulb temperature, the current national standard defines the normal range of cooling water temperature. It is stipulated that the inlet and outlet water temperature of the traditional standard air-conditioning evaporative refrigeration chiller is generally 32°C / 37°C, and the cooling water is provided for the air-conditioning condenser with a temperature difference of 5°C. Under appropriate humidity conditions, the outlet water temperature of the evaporative refrigeration chiller...

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a method and device for operating air-conditioning cooling water with a large temperature difference, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the problem that the cooling water of standard air-conditioning evaporative refrigeration chillers releases cold energy in conventional methods and easily causes evaporative refrigeration cold water The waste of cooling capacity of the unit and the reduction of the heat exchange efficiency of the evaporative refrigeration chiller

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