Displacement Ventilation: No. 1 (Control of the Built Environment S.) - Hardcover

Skistad, Hakon

Hardcover

ISBN 10: 0863801471 ISBN 13: 9780863801471

Publisher: Research Studies Press, 1994

Synopsis

In displacement ventilation systems, the principle of buoyancy is utilised to remove warm contaminated air from an occupied area. The main driving force is natural convection: instead of attempting to combat the forces of natural convection as in mechanical dilution ventilation, displacement systems supply and exhaust air in such a way as not to interfere with the convection currents set up by the heat sources in a space. Provided that pollution and heat sources are in close proximity, displacement ventilation can give better air quality than dilution ventilation, but good design is necessary to ensure that unacceptable vertical temperature gradients and cold draughts along the floor are avoided.
In this book the author, Hakon Skistad, draws on his long experience in the development, design and installation of displacement ventilation systems. The book deals with the principles of convective flow in rooms and of the air movement generated by different types of device that supply air at low velocity. It examines the implications of the interactions between these flows on the temperature and pollutant distributions in rooms, and provides guidance on comfort criteria, the selection of supply air terminal devices and system configuration. There are useful examples of design procedures for specific applications including a single cell office, a meeting room and an auditorium. The book is written for the practising engineer who is designing ventilation systems and for the student who needs to understand the underlying principles.

About this title

Synopsis

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.

Edition details

• Publisher: Research Studies Press
• Publication date: 1994
• ISBN 10: 0863801471
• ISBN 13: 9780863801471
• Binding: Hardcover
• Language: English
• Number of pages: 168