EXAMPLE 3 Consider the heat exchanger finned-tube, cross-flow heat exchanger with a gas-side overall heat transfer coefficient and area of 100 W/m² • K and 40 m², respectively. The water flow rate and inlet temperature remain at 1 kg/s and 35C. However, a change in operating conditions for the hot gas generator causes the gases to now enter the heat exchanger with a flow rate of 1.5 kg/s and a temperature of 250C. What is the rate of heat transfer by the exchanger, and what are the gas and water outlet temperatures? that is, a

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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EXAMPLE 3
Consider the heat exchanger
finned-tube, cross-flow heat exchanger with a gas-side overall
heat transfer coefficient and area of 100 W/m² · K and 40 m²,
respectively. The water flow rate and inlet temperature remain at
1 kg/s and 35C. However, a change in operating conditions for
the hot gas generator causes the gases to now enter the heat
exchanger with a flow rate of 1.5 kg/s and a temperature of
250C. What is the rate of heat transfer by the exchanger, and
what are the gas and water outlet temperatures?
that is, a
1² .
Transcribed Image Text:EXAMPLE 3 Consider the heat exchanger finned-tube, cross-flow heat exchanger with a gas-side overall heat transfer coefficient and area of 100 W/m² · K and 40 m², respectively. The water flow rate and inlet temperature remain at 1 kg/s and 35C. However, a change in operating conditions for the hot gas generator causes the gases to now enter the heat exchanger with a flow rate of 1.5 kg/s and a temperature of 250C. What is the rate of heat transfer by the exchanger, and what are the gas and water outlet temperatures? that is, a 1² .
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