GATE ME · 2022 · ME
Question 65: Heat-Transfer
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Question 65
MENAT2 marksNeeds review
During open-heart surgery, a patient’s blood is cooled down to 25 °C from 37 °C using a concentric tube counter-flow heat exchanger. Water enters the heat exchanger at 4 °C and leaves at 18 °C. Blood flow rate during the surgery is 5 L/min.
Use the following fluid properties:
Fluid | Density (kg/m ) | Specific heat (J/kg-K) |
|---|---|---|
Blood | 1050 | 3740 |
Water | 1000 | 4200 |
Effectiveness of the heat exchanger is ________ (round off to 2 decimal places).
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2022ME
GATE ME 2022 · Paper 1
Mechanical Engineering · Original paper archive
- Section
- Mechanical Engineering
- Question type
- Numerical answer (NAT)
- Marks
- 2 marks
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