Question 3. High pressure steam (stream 1) at a rate of 2000 kg/h initially at 3.5 MPa and 350 °C is expanded in a turbine to obtain work. Two exit streams leave the turbine. Exiting stream 2 is a 1.5 MPa and 225 °C and flows at 100 kg/h. Exiting stream 3 is at 0.79 MPa and is known to contain a mixture of saturated vapor and liquid. A (negligible) fraction of stream 3 is bled through a throttle value to 0.10 MPa and is found to be 120 °C (stream 4). The measured output of the turbine is 100 kW. a) Determine the temperature and quality of stream 3. b) Determine the rate of heat transfer into or out of the turbine during its operation

Question 3. High pressure steam (stream 1) at a rate of 2000 kg/h initially at 3.5 MPa and 350 °C is expanded in a turbine to obtain work. Two exit streams leave the turbine. Exiting stream 2 is a 1.5 MPa and 225 °C and flows at 100 kg/h. Exiting stream 3 is at 0.79 MPa and is known to contain a mixture of saturated vapor and liquid. A (negligible) fraction of stream 3 is bled through a throttle value to 0.10 MPa and is found to be 120 °C (stream 4). The measured output of the turbine is 100 kW. a) Determine the temperature and quality of stream 3. b) Determine the rate of heat transfer into or out of the turbine during its operation

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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Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.

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