Ambient conditions for an aircraft cruising at 1000 km/h are 35 kPa and -15C. The cabin...
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Ambient conditions for an aircraft cruising at 1000 km/h are 35 kPa and -15°C. The cabin desired temperature is 25°C and the cooling turbine exit pressure is 106 kPa. The pressure ratio across the compressor is 3.0. Assuming 100% efficiency for ram effect, compressor and turbine and ideal heat exchanger, determine for simple gas refrigeration cycle of 18 ton of refrigeration capacity: (a) Temperature and pressures at all states of the cycle. (b) Mass flow rate and volume flow rates at compressor inlet and turbine exit. (c) The power needed to drive the compressor. (d) COP of the system Ambient conditions for an aircraft cruising at 1000 km/h are 35 kPa and -15°C. The cabin desired temperature is 25°C and the cooling turbine exit pressure is 106 kPa. The pressure ratio across the compressor is 3.0. Assuming 100% efficiency for ram effect, compressor and turbine and ideal heat exchanger, determine for simple gas refrigeration cycle of 18 ton of refrigeration capacity: (a) Temperature and pressures at all states of the cycle. (b) Mass flow rate and volume flow rates at compressor inlet and turbine exit. (c) The power needed to drive the compressor. (d) COP of the system
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Thermodynamics An Interactive Approach
ISBN: 978-0130351173
1st edition
Authors: Subrata Bhattacharjee
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