Effect of distribution percentage of radiant heat on loads in an upward displacement room

In the paper cooling loads are calculated and analysed under different distribution percentages of radiant heat sent out by indoor heat sources to the envelope of an upward displacement ventilation room with different constructions. It is found that the former approximate methods of distribution percentage will cause big errors when accurately calculating the cooling loads formed by radiant heat gains from indoor heat sources. The accurate method should be calculating the cooling loads based on the actual distribution percentage to each of the inside surfaces of the room. Key words : air-conditioning; upward displacement ventilation; cooling load; distribution percentage; radiant heat