Calculation of air curtain parameters for cattle breeding livestock premises taking into account wind load

Abstract

The use of air curtains in livestock premises is aimed at limiting the amount of cold air entering through the open gate opening and heating it. Recommendations for selection and calculation methods for air curtains for cattle breeding farm premises are given, taking into account the influence of wind load. The proposed method makes it possible to calculate the thermal and energy parameters of air curtains, taking into account the variability of the climatic factors impact (wind speed and direction). The aerodynamic coefficients of the cowshed building, taking into account wind directions, were determined to calculate the amount of air entering through the gate opening protected by an air curtain. Formulas for calculating heat losses through an opening protected by an air curtain are given. The procedure for calculating the parameters is proposed and the requirements for air curtains for cattle breeding livestock premises are formulated.