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In a counter flow heat exchanger, for the hot fluid the heat capacity = 2 kJ/kgK, mass flow rate = 5 kg/s, inlet temperature = 150°C, outlet temperature = 100°C. For the cold fluid, heat capacity = 4 kJ/kg K, mass flow rate = 10 kg/s, inlet temperature = 20°C. Neglecting heat transfer to the surroundings, the outlet temperature of the cold fluid in °C is
[1994]
  • a)
    7.5
  • b)
    32.5
  • c)
    45.5
  • d)
    70.0
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
In a counter flow heat exchanger, for the hot fluid the heat capacity ...
Heat lost by fluid = Heat gained by cold fluid
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In a counter flow heat exchanger, for the hot fluid the heat capacity ...
°C, outlet temperature = 50°C. For the cold fluid, the heat capacity = 1.5 kJ/kgK, mass flow rate = 3 kg/s, inlet temperature = 20°C. Determine the heat transfer rate and the log mean temperature difference (LMTD) for this heat exchanger.
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Community Answer
In a counter flow heat exchanger, for the hot fluid the heat capacity ...
Heat lost by fluid = Heat gained by cold fluid
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In a counter flow heat exchanger, for the hot fluid the heat capacity = 2 kJ/kgK, mass flow rate = 5 kg/s, inlet temperature = 150°C, outlet temperature = 100°C. For the cold fluid, heat capacity = 4 kJ/kg K, mass flow rate = 10 kg/s, inlet temperature = 20°C. Neglecting heat transfer to the surroundings, the outlet temperature of the cold fluid in °C is[1994]a)7.5b)32.5c)45.5d)70.0Correct answer is option 'B'. Can you explain this answer?
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