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Q#1
GATE CH 2019
NAT
+2 marks
-0 marks
Stream A with specific heat capacity CPA 2000 J/(kg K) is cooled from 90 °C to 45 °C in a concentric double pipe counter current heat exchanger having a heat transfer area of 8 m². The cold stream B of specific heat capacity CPB 1000 J/(kg K) enters the exchanger at a flow rate 1 kg/s and 40 °C. The overall heat transfer coefficient U = 250 W/(m² K). Assume that the mean driving force is based on the arithmetic mean temperature difference, that is,
the ith stream (i = A, B) at the inlet and exit, respectively. The mass flow rate of stream A (in kg/s), is__________(rounded off to two decimal places).
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Browse Practice Questions by Chapters / Topics in Browse Practice Questions by Chapters / Topics in GATE Chemical Engineering
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| Topic | Questions | Attempted | Correct | |
|---|---|---|---|---|
| Heat Transfer | 26 | 0 | 0 | |
| Chemical Technology | 17 | 0 | 0 | |
| Mechanical Operations | 12 | 0 | 0 | |
| Mass Transfer | 42 | 0 | 0 | |
| Instrumentation and Process Control | 26 | 0 | 0 | |
| Fluid Mechanics | 24 | 0 | 0 | |
| Engineering Mathematics | 41 | 0 | 0 | |
| General Aptitude | 60 | 0 | 0 | |
| Chemical Reaction Engineering | 26 | 0 | 0 | |
| Process Calculation | 9 | 0 | 0 | |
| Plant Design Economics | 10 | 0 | 0 | |
| Thermodynamics | 24 | 0 | 0 |
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