More than a third of the energy consumed in industrialised countries is used in creating acceptable conditions of thermal comfort and lighting in buildings, but such demands are harmful to the environment and are of concern to building experts. Internal thermal conditions are determined by the climate, the heating and cooling plant, and people´s behaviour, together with the characteristics of the building fabric itself. In this book the author discusses physical findings and computational techniques relating to the fabric, bringing together for the first time in one volume issues fundamental to heat transfer in buildings. Features include - An overview of the use of thermal circuit theory. A wealth of information on convective and radiative exchange inside and outside the building envelope. Merging the processes of heat transfer by convection and radiation.