SUNConferences, SAIIE NeXXXt

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Evaluation of the Evaporator System of an Atmospheric Water Generator Designed for Rural KwaZulu Natal
Sandisiwe Khanyisa Thisani, Daramy Vandi Von Kallon, Emmanuel Bakaya-Kyahurwa

Last modified: 2019-08-26

Abstract


Atmospheric Water Generators (AWGs) are a rapidly growing technology  used to condense vapour from air to produce drinking water. This study introduces a novel cooling condensation type AWG design and investigates the rate of water condensation across the evaporator of an AWG designed for rural KwaZulu Natal at three different climate conditions using first principal steady state calculations and CFD methods. The study findings illustrate the high dependence of AWG technology on climate conditions and suggest that operating an AWG system at 15°C and below with 40% relative humidity (RH) can be considered beyond the effective operational limits of a cooling condensation type AWG. The study findings also suggest that AWG can be effective at room temperature, 21°C and at 65% RH and above.

Keywords; Atmospheric Water Generator (AWG), Heat Transfer, Computational Fluid Dynamics (CFD)

 


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