An experimental study is carried out to investigate the performance of a solar Rankine system using supercritical CO2 as a working fluid. The testing machine of the solar Rankine system consists of an evacuated solar collector, a pressure relief valve, heat exchangers and CO2 feed pump, etc. The...

In this paper, experimental investigation into the basic characteristics of solar thermal conversion using supercritical CO2 natural convection are presented. Natural circulation of supercritical fluids can be easily induced and even a small change in temperature can result in large change in...

This article deals with a CO2 critical microchannel convective flow with heat applied from two side walls. Fluid near its gas–liquid critical point is very dense and much expandable; meanwhile, the thermal diffusivity tends to zero when it goes near the critical point. In microchannels, the...