Differences in humidity transport from a person in mixing - and displacement ventilation (source flow)

摘要

People who stay longer times in closed rooms with climatisation complain more often about dry air than people who stay in free ventilated rooms[1]. This happens although when the humidity is in the limits given in DIN 1946 Teil 2. There are irritations of mucous membranes and the feeling of dry eyes and mouth. These complaints are more often in rooms with mixing ventilation than in rooms with displacement ventilation (source flow). In the following article the humdity transport from as person in different ventilated rooms is investigated. The investigations were made for displacement ventilation (source flow) and mixing ventilation. The result of the first pre-investigations can give a first qualitative statement.