AIR CONDITIONING INSTALLATIONS

摘要

An air conditioning installation is combined with a process plant producing hot waste gases. The installation compri? an air handling unit through which fresh air at ambient temperat? is drawn for ducting to a desired location and a heat exchanger through which the hot waste gases pass in spatial flow to fresh air which is thereby heated. This heated fresh air can then be selectively admixed with said ambient temperature fresh air to raise the temperature of the latter if so desired. Waste gas collection ducting extends between the processing plant and an inlet of the heat exchanger. Damper controlled diverting duct means upstream of the inlet to the heat exchanger are also provided for agressing the hot waste gases to a location other than the heat exchanger when a predetermined situation prevails.