Tuesday, March 19th, 2019

A new thermal–hydraulic process for solar cooling

Publication year: 2011brbSource:/b Energy, In Press, Corrected Proof, Available online 21 June 2011brMatthieu, Martins , Sylvain, Mauran , Driss, StitoubrThis paper presents a novel and innovative solar cooling, air-conditioning process for individual buildings, which uses common flat plate collectors. The principle of the process is based on an original coupling between an engine cycle and a reverse cycle, which are respectively a Rankine-like cycle and a reverse Rankine cycle. The coupling of these dithermal cycles produces a global tri-thermal system with an internal work transfer realised by an inert liquid LT which plays the role of a liquid piston. These cycles use their own working fluid (hydro-fluorocarbons (HFCs)) and their performances are close to corresponding Carnot cycles. This new…br Highlights: ► We present a new solar cooling process that couples engine and reverse Rankine cycles. ► The working fluid pair R236fa/R134a is selected for air-conditioning application. ► We evaluate the performances of two process versions through a dynamic modelling. ► A COP of 0.49 is achieved by using heat at 70°C and producing cold at 12°C. ► Attractive solar cooling process that can use low temperature driving heat source.

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