ABSTRACT
Conventionally, the set of three paths, radiation, convection and conduction, is called heat transfer and evaporation is called mass transfer. Nevertheless, the evaporation, or the condensation, which is the opposite phenomenon of evaporation, is involved, more or less, together with three paths of heat transfer; this is particularly so with respect to human body within the built environment. heat transfer is re-defined to consist of four paths: radiation, convection, conduction and evaporation. Generally speaking, any matter, solid, liquid or gas, expands or shrinks depending on its state of being hot or cold. This chapter presents a simple experimental confirmation for the existence of atomic and molecular particles. It shows three detached one-room houses prepared for summer-case experiment. The chapter demonstrates quantitatively the relationships between the thermal resistance of some typical building materials and their respective thickness.
