ABSTRACT

This chapter deals with heat-loss calculations, solar heat gains, air infiltration, and global warming. Then, it presents definitions and derivations of thermal conductivity, ductivity, thermal resistivity, and environmental temperature. Examples are provided for calculating each of these parameters. A layer of stationary air is formed on the inside and outside surfaces of the structure. These layers of stationary air act as insulators and must therefore be included in the calculation to find the total resistance of the structure. In order to calculate the thermal transmission through a structure, it is preferable to make a sketch of the structure showing the various components and their thicknesses. The chapter also discusses thermal insulation of walls, solid floors, hollow timber floors and ceiling floors. The reduction in fuel due to insulation reduces the emission of carbon dioxide into the atmosphere and helps to reduce the greenhouse effect.