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Combined
gas turbine vapor power plant is a modified form that involves the gas power
cycle and the vapor power cycle therefore known as combined gas-vapor cycle.
The gas turbine operates on higher temperatures and the by using the steam
cycles. The gas turbine power plant works on higher temperature, coating
blades, cooling turbine, and the gas turbine with the higher thermal
efficiencies. The gas enters through the inlet and then leaves with higher temperature
from the turbine. The process is cyclic and regenerates the desirable
characteristics on the higher temperatures. The energy in the cycle is
recovered by using the inlet and the exhaust gas and reheating process supplies
more energy to the fuel.
TEST-The
Expert System for Thermodynamics is a web based tool that is developed to
provide the users an expert system to resolve the issues. The web-based system
is user friendly system and provides visual environment to resolve the
thermodynamic problems. The comprehensive website works on the basis of
particular features that is extensive set provided by the demons.
The
present work is based on the TEST analysis for the combined gas turbine vapor
power plant. The analysis measures the mass flow rates for the air, cooling
water, and steam generated in the cycle. The net power is developed in the gas
turbine cycle and the vapor cycle is measured in MW. The thermal efficiency for
the combined cycle is measured by using the online testing process. In the present
work all the analysis are carried out on TEST-The Expert System for
Thermodynamics through web-based systemhttp://www.thermofluids.net/.
Input variables of
Combined gas turbine vapor power plant
In
the compressor of combined gas turbine vapor power plant the air with the
specific pressure of 1 bar and temperature of 25 C. The energy is transferred
to the compressor at the rate of 50 MW and the change in the pressure is not
significant. The temperature of inlet of turbine is 1300C, the gas of the
turbineexpands inside with the isentropic efficiency of 88% at the pressure of
1 bar. The air of turbine then passes to the interconnection of the heat
exchanges and eventually discharges at 200C and 1 bar. The vapor cycle of the
steam entering in the field is fixed at 12.5 MPa and temperature is measured as
500C. The condenser pressor is 0.1 bar and water enters into the pumps as a
saturated liquid under the pressure of 0.1 bar. The isentropic efficiencies for
the condense increases for 90 % and 95 %. The cooling water moves to the condenser
at 20 C and then returns back at 35 C.
TEST-The Expert System
for Thermodynamics
The
model selected for the analysis of combined gas turbine vapor power plant is multiple
model provided for the Gas and vapor combined power cycle TEST apps.The
selected mode was PC + IG model. The IG model runs the gas turbine and on the
other hand the PC model runs Rankine Cycle.The global I/O panel was selected
from the input area. The model consists
of 5 states as listed below,
1. The
State 1 is compressor inlet in the scheme while the temperature and pressure is
provided in the state 1 model.
2. The
state 2 is isentropic exist in the cycle, and depends on the specific enthalpy.
3. The
state 3 obtained for the constant pressure and mass.
Problem description
State 1: Compressor of the combined gas turbine vapor power plant
State 2: Combustor: PG model of Combined gas turbine vapor power plant
\
State 3: Turbine inlet: PG model
of Combined gas turbine
vapor power plant
State 4: heat exchanger inlet: PG model of Combined gas turbine vapor power plant
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