firing temperature calculation

Dear CSA,

I want to know what was reply (later on to the question) of this message. I don't see reply here. Did you provide or if possible can u provide now? want to know about GE7FA timers for base load and lower than base load operation in addition to peak load? :)

thx
 
GTT,

I did not get a chance to download the file. I've since been told there is a newer revision (GER-3620R--the last alpha character designates the revision; the "higher" the character (R is higher than K) the newer the revision).

I would refer you to GER-3620; that's the "bible". I believe all of the conditions are spelled out in that document.

As for how "Base Load" firing time is calculated, you should be able to refer to the sequencing/application code running in the Speedtronic turbine control panel(s) at your site.
 
Dear CSA,

The correct formula to calculate the firing temperature comes from the basic thermodynamic equations. Here the temperature needs to be put in "absolute" values and not the way CSA has calculated.

Say the values are now in English units. The correct equation is:

Tfire = (TTXM+460) x (Press Ratio)exp((k-1)/k)-460

For air-fuel mixture, you will have k = 1.26 approx.
For the parameters that you have, you will get T-fire = 2090F.
Hope this helps.
Combustion Engineer
What unit of temp and pressure considered for calculation ?
 
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