Abstract
The roto-cooler rotary blade air cycle air-conditioning system is simpler and less expensive than conventional vapour compression air-conditioning systems. This study analyses the effects of the unsteady flow on the heat exchanger and the performance of the roto-cooler system. The air properties, effects of the heat exchanger length on the air properties, the cooling capacity, the thermal coefficient of performance and the total coefficient of performance of the system are studied. Numerical results of the specific operating conditions are compared with the available data. The heat exchanger length of the prototype can be reduced significantly without loss of system performance.
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