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Super-Efficient Mechanical Ventilation

Ove Arup & Partners, Consulting Engineers, London, UK

A novel ventilation system has been installed in build ings constructed for the New Campus of the University of Nottingham. Super-efficient mechanical ventilation has been used as part of an integrated environmental strategy and operates with fan input powers below 0.5 WI^-1.S ^-1 of airflow. The complete plant was assem bled from innovative low-pressure components and has exceptional performance. A key element of the design is that components of the system are bypassed when not in use. At the heart of the system is a low-velocity, high- efficiency thermal wheel. Evaporative cooling reduces summertime peak temperatures. A tracking wind-as sisted exhaust cowl further reduces the dependence on fan power. The low fan power requirement is matched by a 450-m2 photo-voltaic array effectively giving zero energy ventilation.

Key Words: Low energy • Mechanical ventilation • Evaporative cooling • Heat recovery • Wind assistance • Photo-voltaic

Indoor and Built Environment, Vol. 9, No. 2, 87-96 (2000)
DOI: 10.1177/1420326X0000900204


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