Please answer a,b,c. Badly needed. Thank you. Figure shows the schematic diagram of a cogeneration cycle. In the steam cycle, superheatedvapor enters the turbine with a mass flow rate of 5 kg/s at 40 bar, 440°C and expandsisentropically to 1.5 bar. Half of the flow is extracted at 1.5 bar and used for industrial processheating. The rest of the steam passes through a heat exchanger, which serves as the boiler ofthe Refrigerant 134a cycle and the condenser of the steam cycle. The condensate leaves theheat exchanger as saturated liquid at 1 bar, where it is combined with the return flow from theprocess, at 60°C and 1 bar, before being pumped isentropically to the steam generator pressure.The Refrigerant 134a cycle is an ideal Rankine cycle with refrigerant entering the turbine at16 bar, 100C and saturated liquid leaving the condenser at 9 bar. Determine, in kW, (a) therate of heat transfer to the working fluid passing through the steam generator of the steamcycle. (b) the net power output of the binary cycle. (c) the rate of heat transfer to the industrialprocess.-SteamgeneratorTurbine15 harTo industrialH,0 cycleprocessH,O/R-134aheatexchangerTurbineRefrigerantcycleR-134acyclePumpCondenserPumpReturn flow fromindustrial processI har, 60°C

16 bar, 100C and saturated liquid leaving the condenser at 9 bar. Determine, in kW, (a) the rate of heat transfer to the working fluid passing through the steam generator of the steam cycle. (b) the net power output of the binary cycle. (c) the rate of heat transfer to the industrial process.

16 bar, 100C and saturated liquid leaving the condenser at 9 bar. Determine, in kW, (a) the rate of heat transfer to the working fluid passing through the steam generator of the steam cycle. (b) the net power output of the binary cycle. (c) the rate of heat transfer to the industrial process.

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

See similar textbooks

Similar questions

In a cogeneration system, a Rankine cycle operates with steam entering the turbine at 800 lbf/in.2, 700°F, and a condenser pressure of 180 lbf/in.2 The isentropic turbine efficiency is 60%. Energy rejected by the condensing steam is transferred to a separate process stream of water entering at 250°F, 140 lbf/in.2 and exiting as saturated vapor at 140 lbf/in.2 The mass flow rate of the process stream is 50,000 lb/h. Let T0 = 70°F, p0 = 14.7 lbf/in.2
A binary vapor power cycle consists of two ideal Rankine cycles with steam and Refrigerant 134a as the working fluids. The mass flow rate of steam is 2 kg/s. In the steam cycle, superheated vapor enters the turbine at 8 MPa, 600C, and saturated liquid exits the condenser at 250 kPa. In the interconnecting heat exchanger, energy rejected by heat transfer from the steam cycle is provided to the Refrigerant 134a cycle. The heat exchanger experiences no stray heat transfer with its surroundings. Superheated Refrigerant 134a leaves the heat exchanger at 600 kPa, 30C, which enters the Refrigerant 134a turbine. Saturated liquid leaves the Refrigerant 134a condenser at 100 kPa. Determine (a) The net power developed by the binary cycle, in kW. (b) The rate of heat addition to the binary cycle, in kW. (c) The thermal efficiency of the binary cycle.
The figure below shows a vapor power cycle that provides process heat and produces power. The steam generator produces vapor at 500 lbf/in.2, 800°F, at a rate of 8 x 104 lb/h. Eighty-eight percent of the steam expands through the turbine to 10 lbf/in.2 and the remainder is directed to the heat exchanger. Saturated liquid exits the heat exchanger at 500 lbf/in.2 and passes through a trap before entering the condenser at 10 lbf/in.2Saturated liquid exits the condenser at 10 lbf/in.2 and is pumped to 500 lbf/in.2 before entering the steam generator. The turbine and pump have isentropic efficiencies of 85% and 89%, respectively. For the process heat exchanger, assume the temperature at which heat transfer occurs is 465°F. Let T0 = 60°F, p0 = 14.7 lbf/in.2 Determine:(a) the magnitude of the process heat production rate, in Btu/h.(b) the magnitude of the rate of exergy output, in Btu/h, as net work.(c) the rate of exergy transfer, in Btu/h, to the working fluid passing through the steam…
The figure below shows a vapor power cycle that provides process heat and produces power. The steam generator produces vapor at 500 lbf/in.2, 800°F, at a rate of 8 x 104 lb/h. Fifty-two percent of the steam expands through the turbine to 10 lbf/in.2 and the remainder is directed to the heat exchanger. Saturated liquid exits the heat exchanger at 500 lbf/in.2 and passes through a trap before entering the condenser at 10 lbf/in.2Saturated liquid exits the condenser at 10 lbf/in.2 and is pumped to 500 lbf/in.2 before entering the steam generator. The turbine and pump have isentropic efficiencies of 85% and 89%, respectively. For the process heat exchanger, assume the temperature at which heat transfer occurs is 465°F. Let T0 = 60°F, p0 = 14.7 lbf/in.2 Determine:(a) the magnitude of the process heat production rate, in Btu/h.(b) the magnitude of the rate of exergy output, in Btu/h, as net work.(c) the rate of exergy transfer, in Btu/h, to the working fluid passing through the steam…
A dual-pressure combined-cycle power plant consists of a gas turbine,HRSG, and steam turbine plant. The gas turbine exhaust gas flow rate is590 kg/s, temperature is 608°C, HP superheated steam condition is 140bars and 550°C temperature, LP saturated steam is at 8 bar, condenserpressure is 0.05 bar, and feedwater temperature is 120°C. Assuming apinch point of 11 K for both high and low pressure, an exhaust gas specific heat of 1.05 kJ/(kg K), and an isentropic efficiency of the steamturbine of 0.9, calculate (a) the total steam production rate of the HRSG inkg/s, (b) the HRSG heat transfer rate in kJ/s, (c) the stack gas temperaturein °C, and (d) the steam turbine power output in kW.
Superheated steam (s. fig. C) at a pressure of 300 bar and a temperature of 550 ℃ enters a turbine made up of two stages. Steam exits the first stage of the turbine at 35 bar and gets reheated at a constant pressure at 550 ℃. Each stage of the turbine has an isentropic efficiency of 80%. The isentropic efficiency of the pump is 85%. The pressure of the condenser is 10 kPa. (a) Sketch the cycle in a T-s diagram and calculate the enthalpy at each point of the cycle. (b) Calculate the flow rate of the working fluid if the power output of the turbine is 100 MW. (c) Calculate the thermal efficiency of the cycle. (d) Double check the result for the heat rejected in the condenser.
Water is the working fluid in a Rankine cycle that produces 100 MW of power. Superheated vapor enters the turbine at 60 bar, 540°C and exits at 6 kPa. Saturated liquid enters the pump at 6 kPa. The isentropic turbine efficiency is 84%, and the isentropic pump efficiency is 80%. Cooling water enters the condenser at 20°C and exits at 38°C with no significant change in pressure. Determine:(a) the mass flow rate of the working fluid, in kg/s.(b) the thermal efficiency.(c) the mass flow rate of cooling water, in kg/s. (d) the back work ratio.
Water is the working fluid in a Rankine cycle that produces 100 MW of power. Superheated vapor enters the turbine at 70 bar, 540°C and exits at 6 kPa.Saturated liquid enters the pump at 6 kPa. The isentropic turbine efficiency is 84%, and the isentropic pump efficiency is 80%.Cooling water enters the condenser at 20°C and exits at 38°C with no significant change in pressure.Determine:(a) the mass flow rate of the working fluid, in kg/s.(b) the thermal efficiency.(c) the mass flow rate of cooling water, in kg/s.(d) the back work ratio.
Superheated steam at 20 MPa, 560 deg C enters the turbine of a vapor power plant. The pressure at the exit of the turbine is 0.5 bar, and liquid leaves the condenser at 0.4 bar at 75 deg C. The pressure is increased to 20.1 MPa across the pump. The turbine and pump have isentropic efficiencies of 81% and 85%, respectively. Cooling water enters the condenser at 20 deg C with a mass flow rate of 70.7 kg/s and exits the condenser at 38 deg C. For the cycle, determine (a) the mass flow rate of steam, in kg/s. (b) the thermal efficiency.
PLEASE ANSWER ALL AND SHOW COMPLETE SOLUTION. 1. Steam is the working fluid in an ideal Rankine cycle. The saturated vapor enters the turbine at 8.0 MPa and saturated liquid exits the condenser at a pressure of 0.008 MPa. The net power output of the cycle is 100 MW. Determine for the cycle (a) the thermal efficiency, (b) the mass flow rate of the steam, in kg/h, (c) the rate of heat transfer, into the working fluid as it passes through the boiler, in MW, (d) the rate of heat transfer, from the condensing steam as it passes through the condenser, in MW, (e) the mass flow rate of the condenser cooling water, in kg/ h, if cooling water enters the condenser at 15 DEGREE CELCIUS and exits at 35 DEGREE CELCIUS.
On my online homework, it says the answer for part b, 993.2 kW and part c, 360.06 are incorrect. I also need help with part d. The figure below provides steady-state operating data for a cogeneration cycle that generates electricity and provides heat for campus buildings. Steam at 1.5 MPa, 280°C, enters a two-stage turbine with a mass flow rate of m1 = 2 kg/s. A fraction of the total flow, y = 0.15, is extracted between the two stages at 0.2 MPa to provide for building heating, and the remainder expands through the second stage to the condenser pressure of 0.1 bar. Condensate returns from the campus buildings at 0.1 MPa, 60°C and passes through a trap into the condenser, where it is reunited with the main feedwater flow. Saturated liquid leaves the condenser at 0.1 bar.
A two -stage staged refrigeration cycle works at a lowest pressure of 0.8 bar and a highest of 8 bar. Each stage works as an ideal vapor compression system with R-134a as the working fluid. The release of heat from the lower cycle to the upper cycle takes place in an adiabatic heat exchanger of opposite flow where both flows in at a pressure of 3 bar. If the refrigrant mass flow rate in the upper cycle is 0.075 kg/s, calculate: a). Refrigerant mass flow rate at the bottom cycle b). Heat absorption power of the cooled room, in kW c). Supply power to compressor d). COP refrigerator Note: siklus is cycle and below the environment the purple one is QH,(the image was blur) so i explain on the note,thx