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In the high temperature environment in summer, the cooling damp curtain is widely used in livestock and poultry breeding, horticultural planting, industrial production and other fields as a more efficient and environmentally friendly cooling method. There are many factors that affect the cooling effect of the wet curtain. The temperature and humidity of the outside air and the structure of the wet curtain are important factors that affect its cooling efficiency. The cooling efficiency of the wet curtain is high in high temperature and low humidity environments.45 ° × 45 °Of angle combinations45 ° × 15 °High cooling efficiency. Secondly, the circulating water volume of the wet curtain and the wind speed of the curtain will also affect the cooling effect, and the effect of the inlet water temperature on the cooling effect is minimal. When using and configuring the wet curtain system for livestock and poultry houses, all factors that affect the cooling effect should be considered in order to achieve excellent use effects.
Cooling wet curtain has the characteristics of green, safety, energy saving, environmental protection, economic and energy saving. The high efficiency cooling method of wet curtain paper and negative pressure fan is widely used in poultry farming, animal husbandry farming, greenhouse planting, gardening flower planting, Industrial production and other places. Especially in chicken coops, greenhouses, pig farms and rabbit farming industry, and some scholars have done related test research on the actual use effect of wet curtains. Based on the cooling principle of the wet curtain, this paper analyzes the factors that affect the cooling effect of the wet curtain, including the effect of the wet curtain paper itself, the external environment and the wet curtain system. Through the analysis of various factors, it can be Provide reference basis for configuration and use.
The cooling principle of the cooling curtain is"Water evaporation absorbs heat"This physical phenomenon is that water flows from top to bottom under the action of gravity, forming a water film on the surface of the corrugated fibers of the wet curtain. When the fast flowing air passes through the wet curtain, the water in the water film will absorb the water. After the heat evaporates, the water evaporates and takes a lot of heat to reduce the temperature of the air passing through the wet curtain, thereby achieving the purpose of cooling. The state of the air changes from high temperature and low humidity to low temperature and high humidity. The entire cooling process is an isenthalpic cooling process, that is, the total enthalpy of the air is unchanged, the temperature decreases and the humidity increases. How to expand the cooling effect of the wet curtain in the hot summer requires analysis of the factors that affect its cooling effect before it can be properly designed and used.