A theoretical optimized working cycle, i.e.
For a better comparison between each test, a preliminary complete regeneration of the adsorbent mean have been always carried out with hot water circulation, produced by a solar thermal system. Different tests have been performed in the flow regime Reynolds 750-3500 to analyze dehumidification effectiveness. Heat and mass transfer happens in an innovative dehumidification component, a finned coil coated with a layer of Zeolite SAPO-34, presenting very low pressure drops. This experimental analysis aims to present the last results of a scientific campaign on a solar DEC prototype, named NAC-wall (Natural Air Conditioning), operating with a hybrid ventilation mode. Within this context, solar DEC (Desiccant, Evaporative Cooling) technologies can represent a valid answer to the energy saving targets. Reducing the energy demand for residential cooling systems is crucial in order to limit CO2 emissions, consistently with the EU climate change policy.
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