Heat Transfer

Hot water (0.01 m³ /min) enters the tube side of a counter current shell and tube heat exchanger at 80°C and leaves at 50°C. Cold oil (0.05 m³/min) of density 800 kg/m³ and specific heat of 2 kJ/kg.K enters at 20°C. The log mean temperature difference in °C is approximately_____.

  • A. 32
  • B. 37
  • C. 45
  • D. 50
Answer: Option A.

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