7. A turbine with one bleeding for regenerative heating of feed water is admitted with steam having enthalpy of 3200 kJ/kg and the exhausted steam has an enthalpy of 2200 kJ/kg. The ideal regenerative feed water heater is fed with 11350 kg/h of bled steam at 3.5 bar (whose enthalpy is 2600 kJ/h). The feed water (condensate from the condenser) with an enthalpy of 134 kJ/kg is pumped to the heater. It leaves the heater dry saturated at 3.5 bar. Determine the power developed by the turbine. JAns. 16015 kW)

7. A turbine with one bleeding for regenerative heating of feed water is admitted with steam having enthalpy of 3200 kJ/kg and the exhausted steam has an enthalpy of 2200 kJ/kg. The ideal regenerative feed water heater is fed with 11350 kg/h of bled steam at 3.5 bar (whose enthalpy is 2600 kJ/h). The feed water (condensate from the condenser) with an enthalpy of 134 kJ/kg is pumped to the heater. It leaves the heater dry saturated at 3.5 bar. Determine the power developed by the turbine. JAns. 16015 kW)

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

Find the following: a. Enthalpy of the steam in kJ/kg entering the condenser b. Enthalpy in kJ/kg of the condensate c. Enthalpy in kJ/kg of the feed water
A vapor-compression refrigeration cycle with Refrigerant 134a as the working fluid operates with an evapo-rator temperature of 50◦F and a condenser pressure of 180 lbf/in2Saturated vapor enters the compressor. Refrigerantenters the condenser at 140◦F and exits as saturated liquid. The cycle has a refrigeration capacity of 5 tons (a) the refrigerant mass flow rate, in lb/min. b) the compressor isentropic efficiency. (c) the compressor power, in horsepower. (d) the coefficient of performance.
considet m kg out of 1gk id taken to the feed henter
V6
Q.5 A standard vapor compression cycle uses R134a as the refrigerant. The condensing and evaporating temperatures are 40°C and 0°C respectively. The isentropic efficiency of the compressor is 80%. The refrigerant flow rate is 0.35 kgs. Calculate (i) the heat absorption rate, (ii) the work input to the compressor, and (iii) the COP of the cycle. Answers: (i) 49.7 kW, (ii) 11.33 kW, (iii) 4.39| Nihal E wijeysuuга Heabins principles of ventilation air conditio win and
Steam at 50 bar and having an enthalpy of 3100 kJ/kg is supplied to a turbine and comes out at 0.10 bar and enthalpy of 2100 kJ/kg. A feed heating is done by extracting the steam at 3.2 bar with an enthalpy of 2500 kJ/kg. The condensate from condenser with an enthalpy of 125 kJ/kg is fed into the feed heater of direct mixing type. The quantity of bled steam is 11200 kg/hr. Find the power developed by the turbine. Neglect pump work.
A simple steam power plant uses water as the working fluid and operates on the simple ideal Rankine cycle. The boiler operates at 15000 kPa and the condenser at 30 kPa. Show the cycle on a T-s diagram with respect to saturation lines and determine the phase change in each state, the minimum temperature required at the turbine inlet such that the mixture at the exit of the turbine is not lower than 80 percent and the thermal efficiency of the cycle
A binary-vapour cycle operates on mercury and steam. Saturated mercury vapour at 4.5 bar is suppliedto the mercury turbine, from which it exhaust at 0.04 bar. The mercury condenser generates saturatedsteam at 15 bar which is expanded in a steam turbine to 0.04 bar.(i) Find the overall efficiency of the cycle.(ii) If 50000 kg/h of steam flows through the steam turbine, what is the flow through the mercuryturbine ?(iii) Assuming that all processes are reversible, what is the useful work done in the binary vapour cyclefor the specified steam flow ?(iv) If the steam leaving the mercury condenser is superheated to a temperature of 300°C in a superheaterlocated in the mercury boiler, and if the internal efficiencies of the mercury and steam turbinesare 0.85 and 0.87 respectively, calculate the overall efficiency of the cycle. The properties ofsaturatedmercury are given below :
In a steam plant 100 kg/min of dry-saturated steam at 30 bar enters the turbine. After expanding isentropic ally the exhaust steam enters the condenser. The condenser pressure is maintained at 0.1 bar by the cooling water taken from a nearby river. Calculate the following: a. Dryness fraction of exhaust steam. b. Turbine work output. c. Work input to the feed pump. d. Heat supplied to the boiler. e. Heat rejected to the cooling water. f. Efficiency of the plant. g. Net power output.