The ventilation heat loss has been assesed for twelve factory/warehouse buildings covering a range of construction types. This has been achieved by the design and development of a new mobile test facility which can pressurise buildings up to and beyond 20,000 m3, depending on their air leakage characteristics. The results of the measured air leakage characteristics have been translated into predicted air change rates for mean wind speeds and average internal/external temperature differences, from which the average ventilation heat loss has been calculated.
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