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Category > Applied Sciences Posted 04 May 2017 My Price 5.00

An adiabatic heat exchanger is to cool ethylene

1. An adiabatic heat exchanger is to cool ethylene glycol (cp = 2.56 kJ/kg∙°C) flowing at a rate of 2 kg/s from 80 to 40°C by water (cp = 4.18 kJ/kg∙°C) that enters at 20°C and leaves at 55°C. Determine (a) the rate of heat transfer and (b) the rate of exergy destruction in the heat exchanger.

2. A well-insulated, thin-walled, counter-flow heat exchanger is to be used to cool oil (cp = 2.20 kJ/kg∙°C) from  150 to 40°C at a rate of 2 kg/s by water (cp = 4.18 kJ/kg∙°C) that enters at 22°C at a rate of 1.5 kg/s. The diameter of the tube is 2.5 cm, and its length is 6 m. Determine (a) the rate of heat transfer and (b) the rate of exergy destruction in the heat exchanger.

 

 

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Alpha Geek
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Status NEW Posted 04 May 2017 10:05 AM My Price 5.00

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file 1493892938-Answer.docx preview (173 words )
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