Vol. 10, Issue 10, Part C (2025)

The heat stress felt by dairy cattle during summer months causes many negative consequences in terms of physiological and behavioral disturbances, susceptibility to diseases and a significant loss in milk production. To mitigate the heat stress, the microclimate of the barn should be known and based on which a suitable mechanism is to be adopted. In commercial dairying barns are often been erected with bricks wall and tin sheets roof and therefore this paper presents the level of heat stress faced by the dairy cattle in such type of barns and describes about a heat stress mitigation mechanism, operated by solar energy. The working pressure of the mechanism, ranged from 54-133 psi over the incident solar radiation intensity of 400-900 W/m2. When, this pressured water is passed through nozzles of suitable aperture then very fine droplets of water are formed. This creates a fog like situation in the barn and associated evaporative mechanism reduces the barn temperature. The developed device covers even a good size barn and also covers many neighboring barns with appropriate networking mechanism. Though the experimental data is site specific but a close resemblance of climatic conditions of the experimental site and other parts of the country suggests a wider applicability of the mechanism.