Displacement ventilation can be used as a means of obtaining better air quality in the occupational space of offices and other premises where people congregate. The idea behind displacement ventilation, as presented in this book, is to utilise buoyancy to remove warm, contaminated air from the occupational space by supplying fresh air with low velocity at floor level, and extracting the contaminated air at the ceiling. Potential problems of vertical temperature gradients and cold draughts at floor level are examined and the principles of the performance of low velocity air supply devices are explained. Aimed at practising engineers involved in the design of ventilation systems, the inclusion both of practical design procedures and examples, and of experience gained by measuring comfort parameters such as temperature, draught and air quality in premises in everyday use, will be invaluable. The book will also be a useful text for students of displacement ventilation.