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.
Due to the complexity in describing the simultaneous effects of a number of factors that influence the climate of an attic space it has proven to be difficult to make simulations of it. This report deals with the problem of using different computer programs for ventilation, heat andmoisture balance in an integrated way so that a proper description of the expected attic climate can be achieved. A general overview of attic space climate and the factors affecting it will be given and it will be described how the simulation packet works.
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