(b) During autumn season, a heat pump is used to heat water from 15 to 45C...
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(b) During autumn season, a heat pump is used to heat water from 15 to 45°C with R-134a as its working fluid circulating the system at a rate of 5 kg/min. The heat pump operates on an ideal vapor-compression cycle. Saturated vapor enters the compressor at -30°C, and saturated liquid leaves the condenser at 28°C. (i) Sketch a process flow diagram of the heat pump and label the units and streams involved. (3 marks) (ii) Draw the T-s diagrams for the heat pump. (2 marks) (iii) Calculate the compressor power in kW. (9 marks) (iv) Determine the heating load of the heat pump in kW. (2 marks) (b) During autumn season, a heat pump is used to heat water from 15 to 45°C with R-134a as its working fluid circulating the system at a rate of 5 kg/min. The heat pump operates on an ideal vapor-compression cycle. Saturated vapor enters the compressor at -30°C, and saturated liquid leaves the condenser at 28°C. (i) Sketch a process flow diagram of the heat pump and label the units and streams involved. (3 marks) (ii) Draw the T-s diagrams for the heat pump. (2 marks) (iii) Calculate the compressor power in kW. (9 marks) (iv) Determine the heating load of the heat pump in kW. (2 marks)
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Related Book For
Introduction to Chemical Engineering Thermodynamics
ISBN: 978-0071247085
7th edition
Authors: J. M. Smith, H. C. Van Ness, M. M. Abbott
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