Q36-37. A thin-walled double-pipe counter-flow heat exchanger is used to cool oil (cp = 2.20 kJ/kg-°C) from 150°C 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...

Q36-37. A thin-walled double-pipe counter-flow heat exchanger is used to cool oil (cp = 2.20 kJ/kg-°C)<br>from 150°C 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<br>1.5 kg/s.<br>Hot oil<br>Cold<br>water<br>1.5 kg/s<br>22°C<br>F40°C<br>Q36. What is the approximate heat transfer by the oil?<br>a. 8Qnet,in = +484 kW<br>b. 80netin = -484 kW<br>c. 8ộnet.out = +484 kW<br>d. Both a and b<br>e. Both b and c<br>f. Both a and c<br>Q37. What is the approximate heat transfer to the water?<br>a. SQnet,in = +484 kW<br>b. 8Qnetin = -484 kW<br>c. 8Qnet,out<br>= +484 kW<br>d. Both a and b<br>e. Both b and c<br>f. Both a and c<br>

Extracted text: Q36-37. A thin-walled double-pipe counter-flow heat exchanger is used to cool oil (cp = 2.20 kJ/kg-°C) from 150°C 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. Hot oil Cold water 1.5 kg/s 22°C F40°C Q36. What is the approximate heat transfer by the oil? a. 8Qnet,in = +484 kW b. 80netin = -484 kW c. 8ộnet.out = +484 kW d. Both a and b e. Both b and c f. Both a and c Q37. What is the approximate heat transfer to the water? a. SQnet,in = +484 kW b. 8Qnetin = -484 kW c. 8Qnet,out = +484 kW d. Both a and b e. Both b and c f. Both a and c

Jun 11, 2022

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Q36-37. A thin-walled double-pipe counter-flow heat exchanger is used to cool oil (cp = 2.20 kJ/kg-°C) from 150°C 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...

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