Looking at your setup, you'll need to use the CLOSED feedwater heater and not the open feedwater heater. In the open feedwater heater, the steam mixes with the entering flow and there are only 3 streams; 2 in and 1 out. In the closed feedwater heater, the steam does not mix with the condensate and there are four streams; two in and two out. In your simulation you should connect the outputs of the steam side into mixers that then mix with the condenser - see the attached image.
The definitions of the pinchpoints, the TTD and all other inputs and parameters can be found by clicking the "More" button next to the name in the proforma.
Jeff
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Jeff Thornton President - TESS LLC 22 N. Carroll Street, Madison WI USA 53703 Office: (608) 274-2577 Fax: (608) 278-1475 www.tess-inc.com E-Mail: thornton@tess-inc.comOn 07/29/2014 8:23 am, 1112102005@ncepu.edu.cn wrote:
Hi all，
I would like to conduct a power plant simulation. The feedwater heater is coupled with drain cooler. Take the middle one FWH2 as an example: the feedwater from FWH3 was pumped into FWH2 and being heated by extraction steam from the steam turbine, afterwards, the hot feedwater will flow into FWH1. Besides, the drain water from FWH1 will flow into FWH2 to heat the feedwater, and finally, the drain water will have to go on heat FWH3. Could anyone tell me how to set the parameters ? I tried to connect the FWH2 with five lines: steam inlet and outlet, feedwater inlet and outlet, and drain water inlet but failed.
As shown below, what does item 9 and 10 mean? And what does pinch point 1-3 means?
Thanks
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