ENERGY-EFFICIENT MICROCLIMATE SYSTEM OF FAMILY FARM ON 30 MILKING COWS
The weight gain of cattle is directly dependent on microclimate parameters. The decrease in the safety of young animals, milk yield, and weight gain in animals is due to a deviation from the norm of the basic zoohygienic microclimate parameters in livestock buildings. The article describes the design of an energy-efficient microclimate system for a family farm with 30 milking heads, based on a heat exchanger-dryer. In the traditional scheme of air exchange to remove moisture from the farm premises, it is required to use two electric heaters with a total capacity of 40 kW (two SFOC-25). The calculation results show that when the outside temperature drops to -43 °C and the air exchange in the farm room decreases to half the required rate from the condition for carbon dioxide removal (one supply fan is turned off) due to moisture condensation on the heat exchanger-dryer with an intensity of 11 kg / h, an energy balance occurs farm premises. This allows you to completely abandon the heaters for heating the supply air, saving payment for energy consumed (71.5 GJ of thermal energy must be spent on maintaining the required microclimate for the heating period, and 19856 kWh when using electric energy). At the same time, the required microclimate parameters are provided in the farm premises. The proposed algorithm for calculating the parameters for the farm premises air exchange system can be used to develop microprocessor or computer climate control devices.