Centralized cold source type air conditioning system and start-stop control method of refrigerating machine set

Abstract

The invention provides a centralized cold source type air conditioning system and a start-stop control method a refrigerating machine set. The centralized cold source type air conditioning system comprises the refrigerating machine set, a centralized cold source box and an end heat exchanger, wherein a first coolant circulation pipeline is arranged between the refrigerating machine set and the centralized cold source box, and a second coolant circulation pipeline is arranged between the centralized cold source box and the end heat exchanger. According to the invention, a centralized cold source type coolant indirect refrigerating mode is used, so that the refrigerating cycle pipeline is short, the refrigerating effect and the refrigerating efficiency are improved, the structure is compact,the system is especially suitable for a working condition of long-distance refrigerant transmission and a condition of large refrigerating space range and low refrigerating temperature.

Description

technical field The invention belongs to the technical field of air conditioning, and in particular relates to a centralized cold source type air conditioning system and a start-stop control method of a refrigeration unit. Background technique After the air conditioner is manufactured, especially for the newly designed air conditioner, it is often necessary to verify the design indicators of the air conditioner through certain tests, and this verification work is usually carried out in the environmental simulation laboratory. Specifically, the corresponding air-conditioning system is used to cool the environment outside the environmental simulation laboratory, so as to create an environment similar to the outdoor environment in winter. At present, the traditional environment simulation laboratory adjustment working condition is to use the conventional semi-hermetic compression condensing unit to realize the cooling and dehumidification of the outdoor environment of the labor...

AI Technical Summary

Problems solved by technology

First, when the compressor is far away from the test room, due to the long transportation distance of the refrigerant, the transportation pipeline is too long, the cooling capacity of the refrigerant is lost during transportation, and the efficiency is not high. At the same time, the pumping capacity of the compressor is very high. requirements;

Second, when multiple areas need to cool down, it can only be achieved through multiple air conditioner units, resulting in a large footprint

Third, it takes a lot of electric heating and humidification to adjust and balance the working conditions, which consumes a lot of energy

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