Solid heat exchanger structure is used in building walls to recover heat energy when air exchange is as part of climate control

摘要

A house or building has a pair of axial flow fans [8,9] that are used to draw fresh air in and circulate old air out. The air enters through controlled weather protected flaps [6]. Built into the walls or ceiling are heat exchanger units [1] that recover between 30 and 60 % of the room heat.