Question
In: Mechanical Engineering
A gas turbine power plant operates on a Brayton cycles has a pressure ratio of 7....
A gas turbine power plant operates on a Brayton cycles
has a pressure ratio of 7. Air enters the
compressor at 300 K. The energy in the form of heat is transferred
to the air in the amount of 950
kJ/kg. Using a variable specific heat for air and assuming the
compressor isentropic efficiency is
83 percent and turbine isentropic efficiency is 85 percent.
Determine the followings:
(i) The highest temperature in the cycle [5 marks]
(ii) The net work output, in kJ/kg [10 marks]
(iii) The back work ratio [5 marks]
(iv) The thermal efficiency. [5 marks]
(v) Show the cycle on T-s diagram [5 marks]
Solutions
samet mamat answered 5 months agoRelated Solutions
A gas-turbine power plant operates on the simple Brayton cycle between the pressure limits of 100 and 1200 kPa.
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
A gas-turbine power plant operates on the simple Brayton cycle with air as the working fluid...
A gas-turbine power plant operates on the simple Brayton cycle
with air as the working fluid and delivers 32 MW of power. The
minimum and maximum temperatures in the cycle are 310 and 900 K,
and the pressure of air at the compressor exit is 8 times the value
at the compressor inlet. Assuming an isentropic efficiency of 80%
for the compressor and 86% for the turbine, determine the mass flow
rate of air through the cycle. Account for the...
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?
. Air enters the compressor of a gas turbine power plant operating on Brayton cycle at...
. 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
a gas turbine power plant operating on brayton cycle with a fuel compressor isentropic efficiency of...
a gas turbine power plant operating on brayton cycle with a fuel
compressor isentropic efficiency of 80 and turbine isentropic
efficiency of 85 percent and it has a pressure ratio of rp. The gas
temperature is 300K at a compressor inlet and 1300K at the turbine
inlet. Heat is received from a source of 1700K. Utilizing the
air-standard assumption (Hot Assumption) and for pressure ratio rp
which varies from 3 to 10, determine:
a) The gas temperature at the exits...
The pressure ratio of a power plant operating according to the ideal brayton cycle is 8....
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 gas turbine plant consists of a compressor with a pressure ratio of 10, a combustion...
A gas turbine plant consists of a compressor with a pressure
ratio of 10, a combustion chamber, and a turbine mounted on the
same shaft as the compressor; the net electrical power of the unit
is 20 MW. The inlet air conditions are 1.013 bar and 15 ?C and the
maximum cycle temperature is 1100 K. The exhaust gases from the
turbine are passed through a heat exchanger to heat water for space
heating before passing to the chimney; by...
Steam enters the high-pressure turbine of a steam power plant that operates on the ideal reheat...
Steam enters the high-pressure turbine of a steam power plant
that operates on the ideal reheat Rankine cycle at 6 MPa and 500°C
and leaves as saturated vapor. Steam is then reheated to 400°C
before it expands to a pressure of 10 kPa. Heat is transferred to
the steam in the boiler at a rate of 6*104 kW. Steam is
cooled in the condenser by the cooling water from a nearby river,
which enters the condenser at 7°C. Show the...
An industrial gas turbine operates at an 8.8:1 pressure ratio and a mass flow of 77...
An industrial gas turbine operates at an 8.8:1 pressure ratio
and a mass flow of 77 kg/s. The
exhaust temperature is at 437?C and the inlet temperature to the
machine is around 1000?C.
The machine is to be designed for a constant axial velocity of 200
m/s. (This data is based on
the Rolls-Royce Avon, an engine that dates from the 1950s but is
still used as low efficiency
high reliability engine for stationary power such as pipeline
pumping.)
For...
An industrial gas turbine operates at an 8.8:1 pressure ratio and a mass flow of 77...
An industrial gas turbine operates at an 8.8:1 pressure ratio
and a mass flow of 77 kg/s. The
exhaust temperature is at 437?C and the inlet temperature to the
machine is around 1000?C.
The machine is to be designed for a constant axial velocity of 200
m/s. (This data is based on
the Rolls-Royce Avon, an engine that dates from the 1950s but is
still used as low efficiency
high reliability engine for stationary power such as pipeline
pumping.)
For...
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