GATE CH · 2025 · CH
Question 51: Heat Transfer
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Question 51
CHNAT2 marksNeeds review
Water flowing at 70 kg/min is heated from 25 °C to 65 °C in a counter-flow double pipe heat exchanger using hot oil. The oil enters at 110 °C and exits at 65 °C. If the overall heat transfer coefficient is 300 W/(m
K), the heat exchanger area is ____ m
(rounded off to 1 decimal place).GIVEN: Specific heat of water and oil are 4.2 kJ/(kg °C) and 2 kJ/(kg °C), respectively.
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2025CH
GATE CH 2025 · Paper 1
Chemical Engineering · Original paper archive
- Section
- Chemical Engineering
- Question type
- Numerical answer (NAT)
- Marks
- 2 marks
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