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Functioning heat exchanger

The functioning of heat exchangers, air-to-air heat transmission

The functioning of heat exchangers goes as follows, the transmission of energy as warmth goes from one source (air, gas or fluid) to another. The functioning of a heat exchanger with a separation between the two substances and whereby no intermediate storage takes place is known as a recuperator. Recair develops and produces recuperators for air-to-air heat transmission.

Heat exchangers have an exceptionally high yield

To make the heat transmission as high as possible the partition needs a certain shape, by making the distance between the warm airflows as small as possible. Regarding the allowed pressure drop within the heat exchanger.

The two airflows move (in opposite direction) parallel to each other past the everlasting partition. As a result thereof cold airflows are heated to the temperature of the out going airflow and the other way around; warm airflows can be cooled down to the temperature of the out going cold airflows.

For an equal separation of the airflows, triangular ducts with a minor diameter and an equal resistance are formed throughout the width of the heat exchanger. Through this the airflows in all ducts are equal. The triangular ducts are surrounded by parallel ducts in which the air is in counterflow. In this way an extreme high effectivity of 93% is reached within the heat exchanger. Because of the hardly recognizable difference in temperature between the incoming outside air and outgoing inside air a pleasant living and working climate is created.