Abstract

This present study aims to investigate the influence of variable fluid properties on CO2 tube cooling process. A transient mathematical model for non thermally equilibrium fluid and solid domains is solved by means of finite difference technique. The effect of constant fluid properties assumption on cycle performance is studied. The validity of such assumption is investigated where it is found that it leads to higher gas cooler outlet temperature. The efficiency of the cooler is also affected and will tend the cycle to operate at a erroneous optimum cooling pressure.

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