the financial costs arising from energy consumption and external environmental impact, linked to the greenhouse effect (GWP) and the
destruction of the ozone layer (ODP). One alternative technique which offers an adequate combination of IAQ and acceptable energy saving
is the introduction of energy recovery systems using air extracted from air-conditioned premises. We have designed a mixed air-energy
recovery system, consisting of two heat pipes and indirect evaporative recuperators. The experimental set-up used is described and the
proposed energy recovery system is characterised. A staggered set-up has been chosen for the input air pipe and a parallel one for the
extracted air for variable recirculation. By means of the trac
