GATE CH · 2020 · CH
Question 45: Heat Transfer
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Question 45
CHNAT2 marksNeeds review
An aqueous suspension at 60 °C is fed to the first effect of a double effect forward feed evaporator with a mass flow rate of 1.25 kg s
. The sum of the rates of water evaporated from the first and second effects is 1.0 kg s
. Temperatures of the exit streams from the first and the second effects are 100 °C, and 60 °C, respectively. Consider the specific heat of the aqueous suspension, and the latent heat of phase change for water to be 4 kJ kg
K
and 2200 kJ kg
, respectively, over this temperature range. The steam economy (in kg per kg) is ________ (round off to 2 decimal places).Log in to check the answer
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2020CH
GATE CH 2020 · Paper 1
Chemical Engineering · Original paper archive
- Section
- Chemical Engineering
- Question type
- Numerical answer (NAT)
- Marks
- 2 marks
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