[MO31] THERMODYNAMIC CYCLESIt is proposed to build a 1000 MWelectric power plant with steam as the working fluid. The condensersare to be cooled with river water. The maximum steam temperature is 550 C, and the pressure in the condenserswill be 10 kPa. Estimate the temperature rise of the river downstream from the power plant.A. AT = 4.9 deg CPowerB. AT = 3.9 deg CplantC. AT = 2.9 deg CD. AT = 1.9 deg CDischargeIntake60 m-8 m deepRiver mean speed10m/minute

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Answered: It is proposed to build a 1000…

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 following image describe a single-flash geothermal power plant. We have the follow informations about the system: The flash chamber (throttling valve) is a isenthalpic device The system is adiabatic The power generated by the turbine is 10kW The pressure and temperature at point 4 are 50 kPa and 100°C respectively The pressure at separator is 500 kPa The separator has the function of separating the phases of a saturated mixture The mass that exits the system through the separator is 5 times the mass that exits the turbine. The pressure at point 1 is 1 MPa If all the information is sufficient, fill in the table below and plot all the points on a T x v graph.
An air-conditioning absorption system has an evaporator capacity of 350 kW with a COP of 0.90 operating at a temperature of 25 C with a condensing temperature of 35 C. The same cooling tower was used to reject the heat from the condenser and the absorber operating 45 C & providing 1 kg/s of water plus lithium bromide solution to the generator. Consider the heat rejection ratio of condenser to evaporator is 1.05, Determine the following: 1. Heat given by the generator & the size of condenser in kW 2. Leaving condenser & evaporator enthalpies & the mass of refrigerant water flowing from the generator to the condenser then to the evaporator & to the absorber (using evaporator heat balance). 3. Weight of lithium bromide in kg/s, concentration in percent & enthalpy from the absorber to the generator in kJ/kg 4. Enthalpy from the generator to condenser in kJ/kg (using condenser heat balance) & concentration in percent & enthalpy from generator to absorber…
2. A surface condenser serving a 50,000-kW steam-turbo generator unit receives exhaust steam at the rate of 200,000 kg/hr. Vacuum in condenser is 0.88025 bar. Sea water for cooling enters at 27°C and leaves at 40°C. For steam turbine condenser as heat given up to cooling water. Calculate the LMTD.
Biomass is used as fuel to power the following cogeneration plant on a school. The turbine drives an electric generator to produce electricity, and part of the steam is extracted to provide heating to campus buildings. The boiler provides 106 kg/h of steam at 6 MPa, 520 °C, of which 4x105 kg/h is extracted between the first and second turbine stages at 1 MPa and diverted to the building heating load. Condensate returns from the building heating load at 0.95 MPa, 115 °C, and it is mixed with liquid exiting the lower pressure pump at 0.95 MPa. The entire flow is then pumped to the boiler pressure. Saturated liquid at 6 kPa leaves the condenser. The turbine stages and the pumps operate with isentropic efficiencies of 89 and 85%, respectively. The efficiency of the electric generator is 93% for converting turbine mechanical power into electricity. Calculate the heating load in kJ/h. Calculate the electric power generated in MWe.
May you please be as detailled as possible. Thank you
An r-134a refrigerator operates a simple vapor compression cycle (SVCC). The evaporatoroperates at -10 °C, while the condenser operates at 1 MPa. R-134a flows around the system at 10 g/s.a. Graph the cycle in a P-h diagram and calculate the temperature at the exit of the compressor, assuming it is 100% isentropicallyefficient.b. Calculate the power required by the compressor (in W) and the cooling effect of the refrigerator (in kW) c. Compute for the COP of the system. What is its percent difference from the reversible efficiency?
In a steam power cycle, the steam supply is at 15 bar and in a dry and saturated condition.The condenser pressure is 0.4 bar. Calculate the Carnot and Rankine efficiencies of the cycle.Ignore the work of the pump.
Condenser a steam power plant that operates on a simple ideal ranking cycle and has a net power output of 22MW. Steam enters the turbine at 7Mpa and 450.05°C and is cooled in the condenser at a pressure of 10kpa by running cooling water from a lake through the tubes of the condenser at rate of 1750 kg/s. Determine the mess flow rates of steam through the steam turbine assuming that the cp of superheated steam is 2.9593kJ/kg.K.
3) A cascade refrigeration system uses R22 in the low temp unit and R12 in the high temp unit. The system develops 28 kW of refrigeration at -45°C. The R12 system operates at -12°C evaporating temp and 40°C condensing temp. There is a 10° overlap of temperatures in the cascade condenser. Calculate the power required by R22 compressor, and the power required R12 compressor.
Hi, I need help with this practice problem for Thermodynamics
Steam enters the turbine at 10 MN/m? and 450°C. The steam expanded isentropically in the turbine down to the condenser pressure of 20 kN/m?. The power developed by the plant is 5600 kW. The condensate leaving the condenser is pumped to the boiler pressure isentropically. Taking into account the pump work and calculate: The mass of steam generated in the boiler. • Cycle thermal efficiency. • Specific steam consumption. Draw the cycle on a T-s diagram. Hint: 1 MN/m = 10 bar %3D
Steam is supplied to a two-stage turbine at 40 bar and 350°C. It expands in the first turbine until it is just dry saturated, then it is re-heated to 350°C and expanded through the second-stage turbine. The condenser pressure is 0.035 bar. Calculate the work output and the heat supplied per kilogram of steam for the plant, assuming ideal processes and neglecting the feed-pump term. Calculate also the specific steam consumption and the cycle efficiency

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