Patent ID: 8876581
Filing Date: 2014-11-04
Classification: F24F,F24H

Abstract:
1. A supply air terminal device comprising: a supply air chamber extending in a first longitudinal direction along which air within the supply air chamber flows, the supply air chamber having a fresh supply air inlet arranged to receive a supply of air from out of doors; a mixing chamber adjoining the supply air chamber; portions of the supply air terminal device forming a flow passage in air receiving relation with the mixing chamber, and in air supplying relation to a room; a nozzle gap or a plurality of nozzles extending from the supply air chamber into the mixing chamber; wherein the mixing chamber and the flow passage are arranged to extend in a second direction towards the room; a heat exchanger forming part of the supply air terminal device, and arranged to pass air from the room containing the supply air terminal device into the mixing chamber; wherein the nozzle gap or the plurality of nozzles is arranged so that air flowing through the nozzle gap or the plurality of nozzles from the supply air chamber in to the mixing chamber draws air from a room containing the supply air terminal device through the heat exchanger in to the mixing chamber, so that air passing through the heat exchanger and air from the fresh supply air inlet are mixed and discharged through the flow passage along the second direction; a planar film electric resistance heating element lying in a plane and which is mounted in the mixing chamber or the flow passage in the first longitudinal direction, such that the planar film electrical resistance heating element extends in the first longitudinal direction; wherein the electric resistance heating element is connected to a source of electrical power, and the electric resistance heating element is selected such that it will dissipate 100 to 600 W per meter in the longitudinal direction when connected to the source of electrical power, and the electric resistance heating element is arranged such that the electric resistance heating element remains under 80° Celsius; and wherein the electric resistance heating element is structured and mounted in the mixing chamber or the flow passage of the supply air terminal device in such a way that the air will wash over the electric resistance heating element.