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Steam enters a counterflow heat exchanger operating at steady state at 0.06 MPa with a quality of 0.9 and exits at the same pressure as saturated liquid. The steam mass flow rate is 1.6 kg/min. A separate stream of air with a mass flow rate of 100 kg/min enters at 30°C and exits at 60°C. The ideal gas model with c, = 1.005 kJ/kg-K can be assumed for air. Kinetic and potential energy effects are negligible.

Steam enters a counterflow heat exchanger operating at steady state at 0.06 MPa with a quality of 0.9 and exits at the same pressure as saturated liquid. The steam mass flow rate is 1.6 kg/min. A separate stream of air with a mass flow rate of 100 kg/min enters at 30°C and exits at 60°C. The ideal gas model with c, = 1.005 kJ/kg-K can be assumed for air. Kinetic and potential energy effects are negligible.

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Steam enters a counterflow heat exchanger operating at steady state at 0.06 MPa with a quality of 0.9 and exits at the same pressure as saturated liquid. The steam mass flow rate is 1.6 kg/min. A separate stream of air with a mass flow rate of 100 kg/min enters at 30°C and exits at 60°C. The ideal gas model with c, = 1.005 kJ/kg-K can be assumed for air. Kinetic and potential energy effects are negligible. Determine the temperature of the entering steam, in °C. For the overall heat exchanger as the control volume, what is the rate of heat transfer, in kW.
Transcribed Image Text:Steam enters a counterflow heat exchanger operating at steady state at 0.06 MPa with a quality of 0.9 and exits at the same pressure as saturated liquid. The steam mass flow rate is 1.6 kg/min. A separate stream of air with a mass flow rate of 100 kg/min enters at 30°C and exits at 60°C. The ideal gas model with c, = 1.005 kJ/kg-K can be assumed for air. Kinetic and potential energy effects are negligible. Determine the temperature of the entering steam, in °C. For the overall heat exchanger as the control volume, what is the rate of heat transfer, in kW.
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