ASPECTS OF AIR AND HEAT DISTRIBUTION IN LOWENERGY RESIDENTIAL BUILDINGS

摘要

In highly insulated residential buildings, complying with the Passive House Standard, the space heat demand canrnbe covered by air heating at air flow rates given by air quality requirements, without the need for additional airrnre-circulation or for a water heating system. The air distribution system is kept compact. In a common conceptrnthe supply air terminal is located above the door to the corridor.rnSuch configurations were evaluated for typical air transfer devices and extreme supply temperatures. This paperrngives results from measurements in the room air flow test chamber at EMPA, showing that room air distributionrnefficiencies and draught risk values remain within acceptable limits Also the risk for low indoor air humidity atrnlow outdoor temperatures is discussed.rnWood stoves offer a chance to cover the remaining small space heat demand by renewable energies. Therncapabilities of the ventilation system to distribute the heat from the stove, placed in the living room, arerninvestigated for a two storey apartment with an open staircase. Requirements in order to avoid overheating arernspecified for this type of stoves.