Impact of reducing net LHV heat rate on output of Steam Turbines in a Combined Cycle Plant (Posted earlier on r/askEngineers)

Impact of reducing net LHV heat rate on output of Steam Turbines in a Combined Cycle Plant (Posted earlier on r/askEngineers)

Hi folks. First time posting here in this sub so please go easy on me.

I'm currently doing a feasibility study on installing an inlet air fogging system on three GE Frame 9E Gas Turbines. The power plant in question is combined-cycle, as stated in the subject with 3 HRSGs connected to a Steam Turbine.

Installation of an evaporative cooling system (fogging type, not the obsolete media type) from Mee Industries Inc. is being considered. However, I need some clarifications:-

Installing these fogging skids at the inlets of these GTs improves the output of these turbines, and also decreases the net LHV heat rate, which for a simple cycle GT is a good thing obviously. However, some engineers on my team have expressed a concern that employing this system will lead to a decrease in the Steam Turbine's output due to a lower LHV.

Can anyone here provide me a detailed technical paper or two to consult whether or not this is true? It seems a little counter-intuitive to me, but I want to be sure.

If anyone has any questions regarding inlet water-fogging, please let me know and I'll explain.

Submitted August 10, 2017 at 01:30AM by SpartanTank
via reddit http://ift.tt/2hMK71W

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Impact of reducing net LHV heat rate on output of Steam Turbines in a Combined Cycle Plant (Posted earlier on r/askEngineers)

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