Steam generators are a type of heat exchanges that are used in power plants to generate steam at desired pressure and temperature (Fig. Q1.b). In a steam generator, saturated liquid water at 30°C enters a 60-mm diameter tube at the volume flow rate of 12 L/s. After exchanging heat with hot gas, the water changes to steam and leaves the generator at a pressure of 9 MPa and a temperature of 400°C. During this process, the diameter of the water/steam tube does not change. Where necessary, assume air as an ideal gas and consider R = 287 J/(kg.K), Cp = 1005 J/(kg.K), Cv = 718 J/(kg.K). (i) Calculate the steam mass flow rate and inlet velocity of the steam? (ii) What is the exit velocity of the steam? (iii) Calculate the rate of heat transfer (in MW) required to change the phase of liquid water to steam.
Steam generators are a type of heat exchanges that are used in power plants to generate steam at desired pressure and temperature (Fig. Q1.b). In a steam generator, saturated liquid water at 30°C enters a 60-mm diameter tube at the volume flow rate of 12 L/s. After exchanging heat with hot gas, the water changes to steam and leaves the generator at a pressure of 9 MPa and a temperature of 400°C. During this process, the diameter of the water/steam tube does not change. Where necessary, assume air as an ideal gas and consider R = 287 J/(kg.K), Cp = 1005 J/(kg.K), Cv = 718 J/(kg.K). (i) Calculate the steam mass flow rate and inlet velocity of the steam? (ii) What is the exit velocity of the steam? (iii) Calculate the rate of heat transfer (in MW) required to change the phase of liquid water to steam.
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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Question
Steam generators are a type of heat exchanges that are used in
power plants to generate steam at desired pressure and
temperature (Fig. Q1.b). In a steam generator, saturated liquid
water at 30°C enters a 60-mm diameter tube at the volume flow
rate of 12 L/s. After exchanging heat with hot gas, the water
changes to steam and leaves the generator at a pressure of 9 MPa
and a temperature of 400°C. During this process, the diameter of
the water/steam tube does not change.
Where necessary, assume air as an ideal gas and consider R = 287
J/(kg.K), Cp = 1005 J/(kg.K), Cv = 718 J/(kg.K).
(i) Calculate the steam mass flow rate and inlet velocity of the steam?
(ii) What is the exit velocity of the steam?
(iii) Calculate the rate of heat transfer (in MW) required to
change the phase of liquid water to steam.
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