A turbine with one extraction for regenerative feedwater heating, receives steam with an enthalpy of 3373 kJ/kg and discharges it with an exhaust enthalpy of 2326 kJ/kg. The ideal regenerative feedwater heater receives 11338 kg/hr of extracted steam at 345 kPa (whose h = 2745 kJ/kg). The feed water (condensate from the condenser) enters the heater with an enthalpy of 140 kJ/kg and departs saturated at 345 kPa (hf = 582 kJ/kg). Draw the T-S diagram then label each properties in it and calculate the turbine power.

A turbine with one extraction for regenerative feedwater heating, receives steam with an enthalpy of 3373 kJ/kg and discharges it with an exhaust enthalpy of 2326 kJ/kg. The ideal regenerative feedwater heater receives 11338 kg/hr of extracted steam at 345 kPa (whose h = 2745 kJ/kg). The feed water (condensate from the condenser) enters the heater with an enthalpy of 140 kJ/kg and departs saturated at 345 kPa (hf = 582 kJ/kg). Draw the T-S diagram then label each properties in it and calculate the turbine power.

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter28: Special Refrigeration Applications

Section: Chapter Questions

Problem 15RQ: Why is two-stage compression popular for extra-low-temperature refrigeration systems?

See similar textbooks

Similar questions

A turbine with one extraction for regenerative feed water heating receives steam withan enthalpy of 3373 kJ/kg and discharges it with an exhaust enthalpy of 2326 kJ/kg.The ideal regenerative feedwaterheater receives 11,338 kg/h of extracted steam at345kPa (whose h=2745kJ/kg). The feedwater (condensate from the condenser)enters the heater with an enthalpy of 140kJ/kg and departs saturated at 345kPa(hf=582kJ/kg). Calculate the turbine output in kW.
A turbine with one extraction for regenerative feedwater heating, receives steam with an enthalpy of 3373 kJ/kg and discharges it with an exhaust enthalpy of 2326 kJ/kg. The ideal regenerative cycle feedwater heater receives 11338 kg/h of extracted steam at 345 kPa (whose h = 2745 kJ/kg). The feedwater (condensate from the condenser) enters the heater with an enthalpy of 140 kJ/kg and departs saturated at 345 kPa (hf = 582 kJ/kg). Calculate the turbine output in kW
Refrigerant-134a enters the compressor of a refrigerator as superheated vapor at 0.22 MPa and 27 C at a rate of 0.07 kg/s, and it leaves at 1.2 MPa and 73°C. The refrigerant is cooled in the condenser to 44°C and 1.16 MPa, and t is throttied to 0.21 MPa. Disregarding any heat transfer and pressure drops in the connecting lines between the components, show the cycle on a T-s diagram with respect to saturation lines, and determine (a) the rate of heat removal from the refrigerated space and the power input to the compressor, (b) the isentropic efficiency of the compressor, and (c) the COP of the refrigerator.
A turbine with one extraction for regenerative feedwater heating, receives steam with an enthalpy of 3373 kJ/kg and discharges it with an exhaust enthalpy of 2326 kJ/kg. The ideal regenerative feedwater heater receives 11,338 kg/h of extracted steam at 345 kPa (whose h= 2745 kJ/kg). The feedwater (condensate from the condenser) enters the heater with an enthalpy of 140 kJ/kg and departs saturated at 345 kPa (h=582 kJ/kg). Find the work turbine output in kW.
Refrigerator 1 simulates an ideal refrigerator and therefore operates on a Carnot cycle using R-134a as the refrigerant at a flow rate of 1.4 kg/sec. The condensing and evaporating temperatures are 30 °C and -10 °C, respectively. To assess the performance of Refrigerator 1, you must submit the report. of the project with the following information: d) The work generated by the turbine; e) The condenser heat rejection rate (Q H); f) The coefficient of performance of the cycle.
A 259-MW steam power plant operates on the Rankine cycle but with turbine and pump efficiencies of 90%. The steam enters the turbine at 10,000 kPa and 550°C. It discharges to the condenser at 50 kPa. Determine the rate of heat rejection to the environment in the condenser in MW.
Rankine cycle, the pressure and the temperature entering the turbine is 1800 Kpa at 380 Degrees celcius and the pressure leaving the turbine is 20 KPa. The quality of steam entering the condenser is 90%. What is the turbine work in Kj/Kg? A. 833.3 B. 799.9 C. 633.3 D. 423.2
A 1000-MW supercritical double-reheat steam power plant operates withthe main (live) steam condition of 250 bars and 560°C and the condenserpressure of 0.04 bar. The steam is reheated first at 30 bars to 560°C andthen at 4 bars to 560°C. The turbine efficiency is 0.92. The feed pumpwork may be ignored. Calculate: (a) the plant net specific work, (b) the plant thermal efficiency, (c) the plant steam mass flow rate, and (d) the plant heat rate.
A 272-MW steam power plant operates on the Rankine cycle but with turbine and pump efficiencies of 90%. The steam enters the turbine at 10,000 kPa and 550°C. It discharges to the condenser at 50 kPa. Determine the mass flow rate in kg/s.?
A basic Rankine steam power plant uses an adiabatic turbine that operates with inlet steam at 6.80 MPa6.80 MPa and 550.0 ∘C.550.0 ∘C. The exhaust steam enters the condenser at 50.0 ∘C50.0 ∘C with a quality of 0.960. Saturated liquid water leaves the isobaric condenser and is pumped to the boiler. Mass flow through the cycle is 1.850 kg/s.1.850 kg/s. Neglecting pump work and kinetic and potential energy changes, determine: the work interaction term of the turbine: © Macmillan Learning A basic Rankine steam power plant uses an adiabatic turbine that operates with inlet steam at 6.80 MPa6.80 MPa and 550.0 ∘C.550.0 ∘C. The exhaust steam enters the condenser at 50.0 ∘C50.0 ∘C with a quality of 0.960. Saturated liquid water leaves the isobaric condenser and is pumped to the boiler. Mass flow through the cycle is 1.850 kg/s.1.850 kg/s. Neglecting pump work and kinetic and potential energy changes, determine: the work interaction term of the turbine: the thermal efficiency of…
Consider a water-ammonia binary vapor cycle consisting. In the steam cycle, superheated vapor enters the turbine at 7 MPa, 450C, and saturated liquid exits the condenser at 55C. The heat rejected from the steam cycle is provided to the ammonia cycle, producing saturated vapor at 45C, which enters the ammonia turbine. Saturated liquid leaves the ammonia condenser at 1 MPa. For a net power output of 24 MW from the binary cycle, determine (a) the mass flow rates for the steam and ammonia cycles, respectively, in kg/s, (b) the power output of the steam and ammonia turbines, respectively, in MW. (c) the rate of heat input to the ammonia cycle, in MW, (d) the rate of heat addition to the binary cycle, in MW, and (e) the thermal efficiency of the binary vapor cycle.
Refrigerant 134a enters the compressor of a refrigerator as superheated vapor at 0.20 MPa and -5 ° C at a rate of 0.7 kg / s, and exits at 1.2 MPa and 70 ° C. The refrigerant is cooled in the condenser to 44 ° C and 1.15 ° C. MPa, and throttles at 0.2 MPa. Neglecting any heat transfer and any pressure drop in the connecting lines between the components, show the cycle on a Ts diagram with respect to the saturation lines, and determine (a) the rate of heat removal from the refrigerated space and the inlet power to the compressor, b) the isentropic efficiency of the compressor, c) the COP of the refrigerator, d) show the Ts and Ph diagrams with all points