• Dual Source Solar Powered Combined-Cycle Multi-Temperature Refrigeration System for Cold Production in the Context of Off-Grid and Rural Energy Access
• Author  :  Didier ZEH NDOH, Frederic LONTSI, Thomas DJIAKO, Robert ZENGWA and Engelbert NGWA
• Pages   :  29-36
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• Abstract

It is proposed and analyzed the coupling of a dual source solar PV & T with a combined compression/ejection multi-temperature refrigeration cycle intended for the simultaneous production of cold for refrigeration and freezing, in the context of off-grid and rural energy access. The developed simulation model helped to perform the system performances for environment friendly refrigerants R290, R152a and R134a. It is shown that for a 1.5 kW domestic fridge-freezer applications, using the developed system should require  surface area PV panels and 3.1 m² surface areas solar collector; while equipping a 15kW multi-temperature cold room with this system leads to  44 m² surface area PV panels and 31 m² surface area solar collector. In addition to the effect of the incident solar irradiance, the influence of the ambient temperature on system performance was also analyzed when using a flat-plate solar collector.

Keywords: Combined-cycle refrigeration system, multi-temperature, solar PV & T, coefficient of performance, off-grid and rural energy access

Article published in International Journal of Thermal Technologies, Vol.7, No.1 (March-2017)