Abstract

The definition and equation for sol-air temperature are discussed. The sol-air temperature is defined as the outside air temperature which, in the absence of solar radiation, would give the same temperature distribution and rate of heat transfer through a wall (or roof) as exists due to the combined effects of the actual outdoor temperature distribution plus the incident solar radiation. The concept undoubtedly facilitates predictions of transient and periodic heat flows through building structures. Thus many organisations and institutions recommend the use of sol-air temperatures whose values have been appropriately listed for various conditions, e.g., physical location and time of year (and hence incidence angle for the solar radiation). (WHK)

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