Abstract
Indoor air mixing loss occurs in an office when the perimeter is heated by one HVAC system and the interior is cooled by the other system. The aim of this study is the quantitative analysis of the mixing energy loss in office buildings. Experiments were conducted with full-size experiment room. The result showed that it was difficult to halt the mixing loss in stable condition. Several cases of simulation were conducted to quantify the annual energy loss in a model building. The comparison of results showed that preventing the mixing loss might reduce 9 % of the thermal load of the whole building.
