ISO 15927-5:2004 specifies the definition, method of calculation and method of presentation of the climatic data to be used in determining the design heat load for space heating in buildings. These include the winter external design air temperatures and the relevant wind speed and direction, where appropriate.
Heat loss through the ground, which also contributes to the heat load for buildings, depends on longer-term temperature changes; methods for calculating ground heat loss are given in ISO 13370.
Status: PublishedPublication date: 2004-11
Edition: 1Number of pages: 6
Technical Committee: ISO/TC 163/SC 2 Calculation methods
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