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Super-efficient mechanical ventilation.

Berry J, 2000
wind assistance | phovoltaic | evaporative cooling | heat recovery | low energy | mechanical ventilation
Bibliographic info: Indoor Built Environ, No 9, 2000, pp 87-96
Languages: English

A novel ventilation system has been installed in buildings 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 W. l-1.  s-1 of airflow. The complete plant was assembled 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-assisted 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.

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