ZV7ZAIN IQBigBlueButton - Reheat..t014.rna1.blindsidenetworks.com37:28Rankine Cycle...Ali Khaleel Kareem OHomeworkExample 2: 2.6 (Page 45)In a stream power plant, the steam mass flow rate is 80ton/h, the steam intersthe turbine at 6MPA and 480 °C, condenser pressure = 0.06MPA, mechanicaland electrical efficiencies are 0.96 & 0.95, respectively. Find the specificsteam consumption and the power output.Example 3: 2.7 (Page 46)Find the cycle efficiency and specific steam consumption of a reheat cycle(Error! Reference source not found.) operating between pressures of3MPA and 0.004MPA, with superheat temp of 450 °C. Assume that the firstexpansion is carried out to the point where the steam is dry saturated andthen the steam is reheated to the original superheat temp. The feed pumpterm may be neglected.

Example 2.26 :- You have posted multiple questions on single window. As per the guidelines I am…

Example 2: 2.6 (Page 45) In a stream power plant, the steam mass flow rate is 80ton/h, the steam inters the turbine at 6MPa and 480 °C, condenser pressure = 0.06MPA, mechanical and electrical efficiencies are 0.96 & 0.95, respectively. Find the specific steam consumption and the power output.

Example 2: 2.6 (Page 45) In a stream power plant, the steam mass flow rate is 80ton/h, the steam inters the turbine at 6MPa and 480 °C, condenser pressure = 0.06MPA, mechanical and electrical efficiencies are 0.96 & 0.95, respectively. Find the specific steam consumption and the power output.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter10: Heat Exchangers

Section: Chapter Questions

Problem 10.17P

See similar textbooks

Similar questions

A. Calculate the thermal efficiency of a Rankine cycle in which the steam is initially dry saturated at 2 Mpa and the condenser pressure 7kN/m². Express this efficiency as a percentage of a Carnot cycle efficiency of the same limits of temperature. B. If the steam leaves the boiler at 350°C with the same pressure of the boiler and condenser given above. Explain why the Rankine efficiency in (A) is less than in (B), and why the ratio of efficiencies of the respective Rankine and Carnot is grater.
A. Calculate the thermal efficiency of a Rankine cycle in which the steam is initially dry saturated at 2 Mpa and the condenser pressure 7kN/m2 . Express this efficiency as a percentage of a Carnot cycle efficiency of the same limits of temperature. B. If the steam leaves the boiler at 3500C with the same pressure of the boiler and condenser given above. Explain why the Rankine efficiency in (A) is less than in (B), and why the ratio of efficiencies of the respective Rankine and Carnot is grater. Ans [ 88.3%, 49.9%]
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.
You were recently selected as an exchange student to Harvard University, USA. You were assigned a unique 9-digit student number (eg 221013889), assume the student number to be your current university student number. Using that number, determine the work output of a Rankine cycle with a boiler pressure of 10 MPa, an enthalpy value of 3217.96 kJ/kg for the condenser pressure, and a steam flow rate of 5 kg/s. Take the enthalpy at the boiler to be the last four digit (in the given example, it becomes 3889) of the student number. Assume an ideal Rankine cycle with no irreversibilities. Please show your work and use the appropriate units
a steam 8.0 MPa and 485 degree Celsius enters the turbine and expand at condenser pressure of 0.006 mpa for cycle and 1kg of steam. determine A.) heat added, B.) Wnet, C.) Thermal Efficiency. And for the engine, Determine the steam flow and the energy output of 40,000 Kw, E.) Wturbine, F.) Energy Chargable, G.) Ideal Heat rate
Problem 1: The boiler of a power steam cycle operates at 6000 kPa and the condenser at 50 kPa. At the entrance to the turbine, the temperature is 500°C. The isentropic efficiency of the turbine is 90 percent, pressure and pump losses are negligible, and the water leaving the condenser is subcooled by 6.3°C. The boiler is sized for a mass flow rate of 18 kg/s. You are asked to: a. Represent the cycle on P-v and T-s diagrams. b. Compute the rate at which heat is added in the boiler. c. Compute the power required to operate the pumps. d. Determine the net power produced by the cycle. e. Compute the thermal efficiency.
A surface condenser serving a 50,000-kW steam turbo-generator unit receives exhaust steam at the rate of 196,000 kg/hr. Vacuum in condenser is 702 mmHg. Sea water SG=1.03 and Cp=0.93 Btu/lb-F is used for cooling enters at 29.5C and leaves at 37.5C. From the steam condenser design, manufacturer consider 950 Btu/lb of steam condensed as heat given up cooling water. Calculate the required quantity of cooling water in m3/s.
Help me explain the derivation of thermal energy of the Stirling cycle
It is proposed to design and develop a Rankine cycle Steam Power Plant in which steam at 80 barand 500 oCis supplied to the turbine which exhausts at a pressure of 0.11 bar into a condenser. Condensate from the condenser is returned to Steam Generator (Boiler) by a Feedwater Pump. The processes in the turbine and pump can be assumed to be reversible adiabatic. In addition, pressure and temperature drops can be neglected throughout the cycle. Sketch the T-s diagram for this cycle and calculate the following performance parameters:i) Cycle Thermal Efficiency ii) Work Ratioiii) Specific Steam Consumptioniv) Condenser Heat Loadv) Mass flow rate of steam to generate a net power output of 40 Megawatts (MW).vi) Mass flow rate of cooling water required for the condenser if the cooling water inlettemperature is 26 oC and its outlet temperature is limited to 40 oC. The specific heat capacityof the cooling water is 4.18 kJ/kg K.viii) The total amount of sensible heat in kW supplied to the…
A surface condenser serving a 50,000 kW steam turbo-generator unit receives exhaust steam at the rate of 196,000 kg/hr. Vacuum in condenser is 702 mmHg. Sea water for cooling enters at 29.5°C and leaves at 37.5°C. For steam turbine condenser, manufacturers consider 950 Btu/lb of steam turbine condensed as heat given up to cooling water. Calculate the logarithmic mean temperature difference.
A surface condenser is to operate under the following conditions: 45,000 kW turbine, exhaust steam rate is 8 lb/kW-hr, 2” Hg absolute condenser pressure, ¾” no. 17 BWG admiralty tubes, 500F inlet water temp., 8 ft/s water velocity, 85% cleanliness factor, 15 0F terminal difference, 80% pump efficiency and 5ft friction drop in tunnels and pipes. Calculate the following: Surface Area (ft2) Volume of cooling water (gpm) Number of tubes Actual length of tubes Pump-motor power (hp)
For the NH3/H2O cycle the following relationship give the solution flow rate per unit refrigeration rate: WFS_A * X - WFS_G(X-1) = 1 whereWFS_A = mass fraction of NH3 in solution form the absorberWFS_G = mass fraction of NH3 in solution from the generator X-1 =mass of solution from the generator per unit mass of refrigerant flowFor large systems, a reasonable pressure drop between the evaporator and absorber is 1.5 psiConsider a large NH3/H2O plant operating per the schematic below: Known/given:i. Refrigeration load = 500 tonsii. Evaporator temperature (state point 10) = 41.1 Fiii. Evaporator pressure (state point 10) = 75 psiaiv. Absorber pressure (state point 11) = 73.5 psia (per rule of thumb above regarding pressure drop between the evaporator and absorber)v. Strong aqua solution temperature (state point 3) = 105 Fvi. Condenser temperature (state point 8) = 100 Fvii. Condenser and tower pressure (state point 7) = 211.9 psiaviii. Concentration split, WFS_G - WFS_A =6% by weight…