infinite
intercooling make the compressor isothermal,
In same infinite reheating and regeneration makes turbine isothermal
13. Consider an air-standard Brayton cycle having 3 stages of compression with intercooling, a regenerator, and...
A brayton cycle with regeneration and intercooling has a
pressure ratio of 4 across each compressor while the total pressure
ratio across the turbine is 16. Air enters each compressor at 298K
while the inlet gas temperature to the turbine is 1200K. If the
regenerator effectiveness is 100%, calculate the cycle thermal
efficiency from the heat addition and rejection.
3. A Brayton cycle with regeneration and intercolinig aeross the turbine is across each compressor while the total pressure ratio across...
4. A regenerative two-stage gas turbine with reheat operating on
the standard-air Brayton cycle is illustrated in Figure 3. In an
ideal Brayton cycle, the processes in the turbines and compressor
are adiabatic and isentropic, and the air flows through the
combustor and heat exchangers at constant pressure.
a) Show that the maximum total work output is
developed when the pressure ratio is the same across each stage, if
the temperature at the inlet to each turbine stage is the...
1. [Givenian Air Standard Brayton cycle; Fluid (s): Air Also has: regeneration and two stages of reheat. Tmin=25°c Pmin = 100 kPa Tmax= 1200°C Pmiddle = 250, soo kPa Pmax = 1200 kPa = 84% IPINDI: draw cycle on T-s. n = 86% diagram and draw system with labeled ered parts. po npic
Pressure ratio of a Brayton cycle with air operated regenerator 8. The lowest and highest temperatures of the cycle are 310 K and 1150 K. Adiabatic efficiency of compressor and turbine 75% and 82%, respectively. the efficiency of the regenerator is 65%. The cycle in the T-s diagram Show. Consider the variation of specific temperatures with temperature. a) the temperature of the air at the turbine outlet, b) Net work of the cycle, c) Calculate the thermal efficiency of the...
Combined cycle power plants are common because of their high efficiency and scalability. They typically combine a gas turbine cycle (the Brayton Cycle) with a steam turbine cycle (the Rankine Cycle) [1]. The goal of this project is to determine the operating efficiency and profitability of a realistic combined cycle power plant. The power plant is as follows: 1. A natural gas-fired Brayton cycle with mÛ air,Br = 1.25 kg s−1 . (a) Ambient air at 1 bar and 300...
An 8 MW air-standard regenerative Brayton cycle operating at steady state with intercooling and reheat, with a mass flow rate of 12 kg/s is shown in the figure. Regenerator 1,444.8K 100 kPa . +4 T-1111.OK Combustor P. - 100 kPa T, - 444.8K P-1200 kPa 2 T-1111.OK P.-1200 kPa T, -1450 K P,- 1200 kPa Compressor stage 1 Compressor stage 2 Turbine stage 1 Turbine stage 2 - 10 MW cycle 7.410.1K P.- 300 kPa 7.- 300 K A 300...
An 8 MW air-standard regenerative Brayton cycle operating at steady state with intercooling and reheat, with a mass flow rate of 12 kg/s is shown in the figure. Regenerator 1,444.8K P, 100 kr ২৫ T, -1111.OK Combustor P. - 100 kPa 7,-4448K P, 1200 kPa 2 T-111LOK - 1200 kP. T, -1450 K P. - 1200 kPa Compressor stage 1 Compressor stage 2 Turbine Turbine stage 2 stage 1 cycle - 10 MW 7 T. - 410.1K IP. - 300...
A=0
B=3
C=4
D=0
4. [12 pts) A block diagram of a Brayton Cycle is shown below. It has equipped with a regeneration component which has an effectiveness of 80%. (Effectiveness of regenerator is ε = (Ts - T4)/(T, - T4)) Air is used as running fluid. The mass flow rate of the air is n = 5.0 kg/s You may assume as cold air standard with Cp = 1.005 and k = 1.4 The turbines and compressors work isentropically....
(6) Gas Refrigeration Air is the working fluid of a Brayton refrigeration cycle with a compressor pressure ratio of 3. At the beginning of the compression, the temperature Ti = 270 K and pressure P1 = 140 kPa. The turbine inlet temperature is T3 = 320 K. You may assume both heat exchangers operate without pressure losses. Draw a T-s diagram for this ideal cycle. If the volumetric flow rate at State 3 is 0.4 m3/s, what is the mass...
Consider a Carnot cycle in which the working substance is 0.10 mol of perfect gas molecules, the temperature of the hot source is 373 K, that of the cold sink is 273 K; the initial volume of gas is 1.00 dm', which doubles over the course of the first isothermal stage. For the reversible adiabatic stages it may be assumed that VT3/2 = constant. a) calculate the volume of the gas VB and Vc); b) calculate the volume of the...