The sector of heating, ventilation and air conditioning (HVAC) accounts for one third of the industrial nations' energy demand and is far-off from being a sustainable process [1]. A promising approach to enhance its compatibility with state of the art energy saving standards is the replacement of ordinary heat exchangers by rotary or counter current enthalpy exchangers [2-4]. However current technologies grapple either with insufficient recovery rates or impermissible lacks of hygiene. In order to address these problems, an innovative, hygienic, membrane-based enthalpy exchanger with reasonable high recovery rates was developed.
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