Exergy analysis of two indirect evaporative cooling experimental prototypes

This paper deals with the exergy analysis of two experimental prototypes consisting indirect evaporative cooling systems different constructive characteristics. Both have been designed and manufactured in Thermal Engineering Laboratory University Valladolid. They are made polycarbonate hollow panels cross section connected into a heat recovery cycle. Each prototype has tested at 4 levels outdoor air volume flow (from 125 to 400 m 3 ·h −1 ) dry bulb temperature 25 40 °C). For each 16 operating conditions destructed by calculated. Results show that higher primary inlet, destruction losses. The increases when wet depression secondary inlet decreases, leading more inefficient configurations. value exergetic efficiency is order 2–12 %. optimum combination any can be proposed as: 300 h 200 . for wide narrow plates prototype, respectively.