Inlet Air Flow - Natural Gas Combustion Turbines
Inlet Air Flow - Natural Gas Combustion Turbines
(OP)
In the anaylsis of a natural gas fired combustion turbine--at varying inlet air temperatures--what is the correct assumption to make regarding the inlet air flow: constant mass flow rate or constant volumetric flow rate or do both vary greatly with inlet air temperature?
Jason Richards
Jason Richards





RE: Inlet Air Flow - Natural Gas Combustion Turbines
RE: Inlet Air Flow - Natural Gas Combustion Turbines
normally and will in school mass flow rates were used. Volume rate is a pretty much affected by temperature, so vary degree of flow properties is observed.
RE: Inlet Air Flow - Natural Gas Combustion Turbines
The main reason for increased turbine power output at low ambiant temperatures (apart, of course, from the greater delta-T available with respect to a fixed exhaust temperature) is precisely the increase in inlet air mass flow, which, with stoichiometric control of fuel flow, allows a greater fuel flow.
RE: Inlet Air Flow - Natural Gas Combustion Turbines
A common method to increase combustion gas turbine output on a hot day is to use inlet chillers or evaporative coolers or inlet foggers- by lowering the inlet temperature the output can be increased as much as 11%, 49 F vs 110 F inlet ( arrid desert air at 110 F cooled to 49 F with inlet chiller)