An ideal Brayton cycle stationary power plant operates with a
pressure ratio of 10 to 1....
An ideal Brayton cycle stationary power plant operates with a
pressure ratio of 10 to 1. if it is designed to generate 800 MW of
power what is the minimum flow rate required?
The pressure ratio of a power plant operating
according to the ideal brayton cycle is 8. Gas temperature 300K at
compressor inlet, at the entrance of the turbine is 1300K. Using
air standard acceptance and taking into account the change of
specific temperatures with temperature,
a.) Calculate the temperature of the gas at the compressor and
turbine outlet.
b.) Calculate the thermal efficiency of the cycle.
c.) Calculate the backward work rate.
a simple ideal Brayton cycle with air as the working fluid has a
pressure ratio of 10. The air enters the compressor at 520 R and
the turbine at 2000 R. Accounting for the variation of specific
heats with temperature, determine (a) the ait temperature at the
compressor exit, (b) the back work ratio, and (c) the thermal
efficiency.
A gas-turbine power plant operates on the simple Brayton cycle between the pressure limits of 100 and 1200 kPa. The working fluid is air, which enters the compressor at 300K at a rate of 150 m3/min and leaves the turbine at 773K. Using variable specific heats for air and assuming a compressor isentropic efficiency of 82 percent and a turbine isentropic efficiency of 88 percent, determine:
(a) the net power output
(b) the back work ratio
(c) the thermal efficiency
Design a gas power plant that works as a non-ideal Regenerative
Brayton cycle by determining the pressure ratio required to
optimize the net power output of the cycle. The minimum cycle
temperature is 300 K while the maximum cycle temperature is 1780 K.
The isentropic efficiency of the turbine is 85% while that of the
compressor is 75%. The effectiveness of the regenerator is to be
taken as 0.8 while the gas flow rate is 30 kg/s. A T-s diagram...
The efficiency of the Brayton cycle increases with an increase
in the pressure ratio across the compressor. What limits our use of
this tactic to increase cycle efficiency? What trade-offs have to
be made?
plase typr the answer no hand writing
A
steam power plant operates on the simple ideal rankine cycle. the
steam enters the turbine at 4 MPa and 500 C and leaves it at 50 kPa
and 150 C. the water leaves the condenser as a saturated liquid and
is subsequently displaced to the boiler by means of a pump at a
temperature of 85 C, which is the isentrophic efficiency of the
turbine?
Consider an ideal Brayton cycle with reheat (air standard). The
pressure and temperature of the air at the inlet of the gas turbine
is 1200 kPa and 1000 K respectively. Assume the gas expands to 100
kPa in two stages. Between the stages, the air is reheated at a
constant pressure of 350 kPa to 1000 K. Assume a fully isentropic
process in the turbines.
Find:
(a) the work produced at each stage, in kJ/kg of air flowing.
(b) the...
The pressure ratio of a Brayton cycle with air operated
regenerator is 8. The lowest and highest temperatures of the cycle
are 310 K and 1150 K. The adiabatic efficiency of the compressor
and turbine is 75% and 82%, respectively, and the efficiency of the
regenerator is 65%. Show the cycle in the T-s diagram. Consider the
variation of specific temperatures with temperature.
a) Calculate the temperature of the air at the turbine
outlet,
b) Net work of the cycle,...
. Air enters the compressor of a gas turbine power plant
operating on Brayton cycle at 14.5 psia and 540° R. The pressure
ratio across the turbine and compressor is same, which is equal to
6. Assume that the compressor work as 0.4 times the turbine work.
Take K=1.4 a) Draw the T-S diagram of the cycle. [2] b) Calculate
the maximum temperature in the cycle. [3] c) Calculate the cycle
efficiency
Consider a steam power plant operating on the ideal reheat
Rankine cycle. Steam enters the high-pressure turbine at
PH MPa and
TH °C and is condensed in the
condenser at a pressure of PL
kPa. Assume the steam is reheated to the inlet
temperature of the high-pressure turbine, and that pump work is NOT
negligible. If the moisture content of the steam at the exit of the
low-pressure turbine is not to exceed
w% percent, determine:
(a) the pressure at...