A steam generator consists of three parts: preheater, evaporator, and superheater. It produces steamat 1500 psia with 100°F of superheat. Saturated liquid enters and saturated vapor exits the evaporatorBTU and the massportion of the steam generator. If the specific inlet enthalpy of the preheater is 180 lbmwhat is the change in entropy during thehrflow rate through the generator is 8.135x104 lbmevaporation? How much heat is added to the fluid in each portion of the steam generator?

Answered: A steam generator consists of three…

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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The steam rate to a turbine for variable output is controlled by a throttle valve in the inlet line.Steam is supplied to the throttle valve at 1,700 kPa and 225°C. During a test run, the pressure atthe turbine inlet is 1000 kPa, the exhaust steam at 10 kPa has a quality of 0.95, the steam flowrate is 0.5 kg/s, and the power output of the turbine is 180kW. 1. What are the heat losses from the turbine? 2. What would be the power output if the steam supplied to the throttle valve were expandedisentropically to the final pressure?
I do not understand the chapter in general. May you please explain why you completed each step as you have. Thank you.
A small power plant produces 25 kg/s steam at 3 MPa, 600 degrees Celsius in the boiler. It cools the condenser with the ocean water coming in at 12 degrees Celsius and returning at 15 degrees Celsius so the condenser exit is at 45 degrees Celsius. Find the net power output and the required mass flow rate of ocean water.
If air enters the adiabatic turbine at 227 degree C and 1500kpa. Final pressure would reach 100kpa, and efficiency of turbine at 85%. What is final temperature and final work? Cv is 0.719kJ/kg.K, cp is 1.007kj/kg.k. Pls sketch two processes of T-S diagram
I need help on the following question: The vapour compression cycle (picture provided), utilises the refrigerant R134a flowing at 0.05 kg s-1. Assuming that the compression is adiabatic and reversible. If the actual input power to the compressor is 2 kW, then: 1. You need to determine the theoretical input power to the compressor and the heat transfer (Φ) to theevaporator. Take the enthalpies h1, h2, and h3 to be 238.41, 263.68 and 81.5 kJ kg-1 (use the 'NH3 Refrigeration Table' where you can find online). 2. You need to determine the coefficient of performance based on your answer to the previous question (1). 3. You need to determine the compressors mechanical efficiency.
An adiabatic turbine has an efficiency of 90%. If air is compressed from 1100kpa and 227 degree Celsius to 101kpa. Find the work done and final temperature. Sketch process on T-S diagram.
iii) the exit area of the nozzle. Take Cp = 1.005 kJ/kg-K and R=287 J/kg-K Q.B3. A heat engine operates between two reservoirs at 400°C and 30°C. Half the power produced by the heat engine is used to drive a Carnot heat pump that removes heat from the cold surroundings at 2°C and transfers it to a house maintained at 27°C. The heat engine is absorbing heat at a rate of 5 kJ/s. i) Draw the complete schematic of the device ii) Determine the thermal efficiency of the heat engine iii) Determine the coefficient of performance of the heat pump iv) Determine the rate of heat loss from the house. v) Determine the minimum rate of heat extraction by the heat pump, and vi) the total rate of heat rejection.
Pleae solve this problem and give an explanation of how you have picked up values from steam tables... Also explain how would we find enthalpy after fluid expansion in first turbine
A compressor has an isentropic efficiency of 80% and compresses refrigerant. The refrigerantenters as a saturated vapor at 100kPa and leaves at 1000kPa with a mass flow rate of .5 kg/s.Determine:a. The temperature of the refrigerant at the exist of the compressor.b. The power input, in kW requiredc. Repeat parts A and C but assume it is isentropic
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