rmw:
I guess you're right. Probably the heat sink conditions will count on cooling tower water temperature or riverwater temperature, since there's a river near the region. The commom outlet pressure of condensing steam turbines is usually low, so I ran both the Dresser and Katmar tools with...
And the water mentioned 105 C enters the HRSG, turns into steam, go to the Steam Turbine, after that to a condenser and is pumped back to the HRSG, and the cycle goes on and on...
the exhaust pressure (condensing) is up to 1 bar, according to the Siemens Steam Turbines Brochure..
Here's the deal, this is a combined cycle power plant, with the two-on-one arrange, 2 GT, each one with a HRSG, and 1 ST
The GT is:
Gas Turbine Siemens SGT-300:
Power Output: 7.9 MW(e)
Fuel...
the enthalpy inlet is 2802.2 kJ/kg, taken from the Saturated Steam Table...
My question is, the outlet steam is not saturated anymore, what table should I use? I know that the outlet is 1 bar (condensing), but I don't know what enthalpy I should use!
Plz help! =)
Felipe
rmw:
Great Site, i got great results with that tool, thank you very much!
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davefitz:
I think you're right, i'm just using the entalpy in that formula, i checked and it is the difference, as you said.
The technical data of the steam turbine is...
I'm trying to design a project of a combined cycle power plant with the two-on-one arranje, (2 GT, 2 HRSG and 1 ST).
Well, i got the results from the Aalborg (HRSG manufacturer) engineer.. he didn't show me the calculations, of course, but he returned the amount of steam that hrsg can...
thank you all people!
Another question just came into my mind... the gas turbine and the steam turbine usually have great rpm's, 7500 rpm, 11000 rpm, sometimes 14000 rpm.... and the turbogenerators are, according to some literature, around 1800 rpm... how do we manage that? a reductor? if so...
srfish:
yeah, from what i understood, it means that the steam that leaves the hrsg and activates a steam turbine is 50C above the saturation temperature, but i really don't know if it's correct. The problem is that here in brazil we're on holydays for carnival (you know, music, samba, women!)...
actually, i don't think i can use the max 25 bar pressure.. here's what i think, i don't know if it is the right calculation:
for a 25-bar pressure -> saturation temperature = 225°C (according to the aalborg table, http://www.aalborg-industries.com.br/downloads/vapor-sat.seco.pdf)
So, it means...
Hello!
I'm trying to specificate a HRSG and i'm having some troubles, i'm wondering if anyone could help me.
I have these data about the HRSG, wich is one from Aalborg here in Brazil:
Output Power from GT: 8MWe max
Fuel: Natural Gas
Exhaust Gas Temperature from GT: 600 °C max
Mass Flow...
