3.2 Load Calculation The cooling load required for cabin cooling is calculated by using standard method of load calculation. The various factors of heat load like solar radiation (roofs, walls, glasses) normal heat gain through glass, normal heat gain through wall, air infiltration, number of persons in cabin sensible heat load, Latent heat load can be calculated using ASHRAE Hand book. (Alam, 2006) [1], (Venkatesh and Pravin 2005) [12].