Steam enters a counterflow heat exchanger operating at steady state at 0.07 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.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Steam enters a counterflow heat exchanger operating at steady state at 0.07 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.
Step 1
Your answer has been saved. See score details after the due date.
Determine the temperature of the entering steam, in °C.
T, =
90
°C
Attempts: 1 of 1 used
Step 2
For the overall heat exchanger as the control volume, what is the rate of heat transfer, in kW.
=
i
kW
Save for Later
Attempts: 0 of 1 used
Submit Answer
Transcribed Image Text:Steam enters a counterflow heat exchanger operating at steady state at 0.07 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. Step 1 Your answer has been saved. See score details after the due date. Determine the temperature of the entering steam, in °C. T, = 90 °C Attempts: 1 of 1 used Step 2 For the overall heat exchanger as the control volume, what is the rate of heat transfer, in kW. = i kW Save for Later Attempts: 0 of 1 used Submit Answer
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