Presents the principles of displacement ventilation along with practical application of the theory, and shows how 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. 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. The inclusion of practical design procedures and examples should prove useful to practising engineers designing ventilation systems. The book is also intended as a text for students following engineering courses on heating, ventilation and air conditioning.
Introducing the idea; air movement in rooms with displacement ventilation; low velocity air supply units; temperature distribution in rooms with displacement ventilation; measurements of air quality and temperature in office rooms; ventilation in particular rooms; comfort criteria in displacement ventilation; comparison between displacement and dilution ventilation; practical arrangements; design procedures and examples; control and automation.