Design method for refrigerating system of multi-storeroom identical temperature refrigeration houses and refrigerating control method

Abstract

The invention discloses a design method for a refrigerating system of multi-storeroom identical temperature refrigeration houses and a refrigerating control method and provides a design method capable of reducing one-time investment of the refrigerating system and filling volume of refrigerating fluid and the refrigerating control method. The design method comprises the following steps of respectively calculating cooling equipment loads of n refrigeration houses according to a present refrigeration house heat load calculation method, wherein the loads are fit for the configuration of cooling equipment of n refrigeration houses; on the basis of the loads, multiplying by a correction factor 1.1-1.3, thereby configuring the cooling equipment; fully considering the influences of the season with the highest environmental temperature, the stage with most opening times and the period with the maximal replenishment quantity on the cooling rate of the refrigeration houses, and configuring a compressing condensing unit according to the refrigerating capacity of the cooling equipment of the biggest refrigeration house. According to the method provided by the invention, one-time investment of the refrigerating system is greatly reduced and the investments in building and electric equipment are also reduced; the size of the refrigerating system of a large-size refrigeration house can be reduced; the filling volume of the refrigerant is less; the potential safety hazard and the one-time investment in the refrigerant are reduced.

Description

technical field [0001] The invention relates to the technical field of refrigeration, in particular to a design method and a refrigeration control method for a refrigeration system of a multi-room same-temperature cold storage. Background technique [0002] The refrigeration compressor, heat exchange equipment (condenser and evaporator) throttling mechanism and auxiliary equipment of the cold storage refrigeration system are all configured in accordance with the provisions of the "Code for Design of Cold Storage". Among them, the refrigeration compressor and condenser (the combination of the two is called a compression condensing unit) needs to be based on the sum of various heats in each cold room at the same temperature multiplied by a correction coefficient less than 1 and summed to obtain the mechanical load. The mechanical load used to configure the refrigeration compressor is close to the sum of the loads of the cooling equipment in each cold room, resulting in a large...

AI Technical Summary

Problems solved by technology

The mechanical load used to configure the refrigeration compressor is close to the sum of the loads of the cooling equipment in each cold room, resulting in a large configuration of the refrigeration compressor. The condenser and auxiliary equipment configured according to the refrigeration compressor are also large, and the diameter of the connecting pipes is large. Excessive investment at one time. After the cold storage is put into use, except for the initial cooling stage, the proportion of refrigeration compressors put into operation is very small, and the supporting equipment room construction facilities, power facilities, heating facilities, safety facilities and water supply and drainage facilities have all increased. Large, a further increase in one-time investment

[0003] At present, the refrigerants used are mainly natural and non-natural. Refrigerants with good thermal performance, environmental protection performance and safety performance have not been found. The general rule is: refrigerants with good thermal performance and environmental protection performance are mostly natural. The safety of these substances is not good; the refrigerants with better thermal performance and safety are mostly non-natural substances, and the environmental protection of these substances is not ideal

Due to the large configuration of the refrigeration system, the refrigerant charging volume increases, which poses environmental and safety hazards

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