Combined air handling unit and refrigeration control method

Abstract

The invention provides a combined air handling unit and a refrigeration control method, and relates to the technical field of refrigeration equipment. The combined air handling unit comprises an evaporative cooling unit, a mechanical refrigeration unit, a surface cooling system and an air guide structure, wherein the evaporative cooling unit comprises a heat exchange core body and a first surfacecooler; the mechanical refrigeration unit comprises an evaporative condenser and an evaporator; the surface cooling system is connected with the evaporator and is provided with a second surface cooler; the first surface cooler and the second surface cooler are adjacent and are located in the air guide structure; and the evaporative condenser is arranged in the evaporative cooling unit and is coupled with the heat exchange core body. The invention further provides the refrigeration control method. The refrigeration control method can be applied to the combined air handling unit, and the combined air handling unit can be controlled to switch the operation mode according to a supply air temperature value, a return air temperature value, an external dry bulb temperature value and an external wet bulb temperature value. According to the combined air handling unit and the refrigeration control method, the energy efficiency can be improved, and the refrigeration cost is reduced.

Description

technical field [0001] The invention relates to the technical field of refrigeration equipment, in particular to a combined air handling unit and a refrigeration control method. Background technique [0002] The PUE value of cooling air conditioners in data centers is getting higher and higher, and the traditional air-conditioning mechanical cooling method consumes too much energy and cannot meet the green construction plan. China has a vast territory, and making full use of natural cooling sources in different regions can greatly achieve a large energy-saving effect. The main way to use natural cold source is to adopt indirect evaporative cooling technology. [0003] However, the refrigerating units used in the existing indirect evaporation technology usually have the problems of high energy consumption in summer and anti-freezing in winter, and also lead to a decrease in energy efficiency, resulting in an increase in refrigeration costs. Contents of the invention [00...

AI Technical Summary

Problems solved by technology

[0003] However, the refrigeration unit used in the existing indirect evaporation technology usually has the problem of high energy consumption in summer and antifreeze in winter, which will also lead to a decrease in energy efficiency, resulting in an increase in refrigeration costs

Images