ANALYTICAL STUDY OF SUMMER WINTER HOUSES

In this present communication, an analytical model has been evolved fo r passive cooling and heating of a building. An analytical expression for room temperature has been derived for different roof treatments, n amely, air flow through the cavity of the roof, water flowing over the roof and air and water both flowing in the roof cavity and over the r oof respectively, in the same direction. The effect of ventilation and infiltration is also included. It is found that the roof treatment wi th both air and water flow and a large isothermal/air mass within the room gives the best load levelling and room thermal comfort temperatur e.