Multiple choice

Water (Cp = 4.18 kJ/kg.K) at 800 C enters a counter flow heat exchanger with a mass flow rate of 0.5 kg/s. Air (Cp = 1 kJ/kg.K) enters at 300 C with a mass flow rate of 2.09 kg/s. If the effectiveness of the heat exchanger is 0.8, the LMTD (in oC) is

  1. 40

  2. 20

  3. 10

  4. 5
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

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