QUESTION 8 A concentric-tube, counter-flow heat exchanger, as shown below, is used to cool mercury [C. h= 1,370 J/kg - °C] flowing at a rate of 1.0 kg/s from 110°C to 70°C. The cooling fluid is water entering the heat exchanger at a temperature of 30°C and flow rate of 0.2 kg/s. The overall heat transfer coefficient of the exchanger is U- 250 W/m2.°C. Water

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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QUESTION &
A concentric-tube, counter-flow heat exchanger, as shown below, is used to cool mercury [C. h= 1,370 J/kg · "C] flowing at a rate of 1.0 kg/s from 110°C to 70°C. The cooling fluid is water
entering the heat exchanger at a temperature of 30°C and flow rate of 0.2 kg/s. The overall heat transfer coefficient of the exchanger is U = 250 W/m. °C.
Water
Mercury
Determine the outlet temperature of the water.
O None of these answers
O 95°C
O 125°C
O 105°C
O 85°C
Transcribed Image Text:QUESTION & A concentric-tube, counter-flow heat exchanger, as shown below, is used to cool mercury [C. h= 1,370 J/kg · "C] flowing at a rate of 1.0 kg/s from 110°C to 70°C. The cooling fluid is water entering the heat exchanger at a temperature of 30°C and flow rate of 0.2 kg/s. The overall heat transfer coefficient of the exchanger is U = 250 W/m. °C. Water Mercury Determine the outlet temperature of the water. O None of these answers O 95°C O 125°C O 105°C O 85°C
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