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7 WorleyParsons. (2008). FPLE - Beacon Solar Energy Project: Dry Cooling Evaluation. WorleyParsons Report No. FPLS-0-LI-450-0001. WorleyParsons Job No. 52002501. 8 New Mexico Central Station Solar Power: Summary Report. EPRI, Palo Alto, CA, PNM Resources, Inc., Albuquerque, NM, El Paso Electric Co., El Paso, TX, San Diego Gas & Electric Co., San Diego, CA, Southern California Edison Co., Rosemead, CA, Tri-State Generation & Transmission Association, Inc., Westminster, CO, and Xcel Energy Services, Inc., Denver, CO: 2008. 1016342.. p. 5-7. 9 WorleyParsons. Wet and Dry Cooling Options for a 250 MW Thermal Plant. and GateCycle models for parabolic trough and central receiver plants which use air cooled condensers compared the relative performance at 70 F and 108 F for the two plant designs as follows: Parabolic Trough Plant: 1450 psig / 710 F / 710 F Rankine cycle 70 F ambient temperature 139.5 MWe gross plant output 0.374 gross cycle efficiency 0.082 bar condenser pressure 108 F ambient temperature 119.9 MWe gross plant 0.321 gross cycle efficiency 0.250 bar condenser pressure 0.860 hot day output / design day output 0.860 hot day efficiency / design day efficiency Central Receiver Plant: 1850 psig / 950 F / 950 F Rankine cycle 70 F ambient temperature 139.9 MWe gross plant output 0.412 gross cycle efficiency 0.082 bar condenser pressure 108 F ambient temperature 121.7 MWe gross plant 0.361 gross cycle efficiency 0.252 bar condenser pressure 0.870 hot day output / design day output 0.875 hot day efficiency / design day efficiency Nominally, both plants show a 5 percent reduction in gross output and gross efficiency if the ambient temperature increases from the design point of 70 F to a hot day temperature of 108 F. This is not a completely representative set of annual performance analyses, and the auxiliary energy demands of the pumps and fans are not included here. However, the trends in the above figures indicate a performance penalty for a parabolic trough plant compared to a tower plant is not as significant as shown in the above reference. 10 WorleyParsons. (2008). FPLE - Beacon Solar Energy Project: Dry Cooling Evaluation. WorleyParsons Report No. FPLS-0-LI-450-0001. WorleyParsons Job No. 52002501. Table 8. 11 PAC SYSTEM® Installation List GEA Power Cooling Systems, LLC 143 Union Blvd., suite 400 Lakewood, CO 80228 Telephone: (303) 987-0123 Station Owner (A/E) Exeter Energy L. P. Project Streeter Generating Station Tucuman Power Station Grumman 13 SEMASS WTE Facility 54 Steam Flow (Lb/Hr) 196,000 246,000 1150000 105700 407500 Turbine BP (in HgA) 2.9 3.5 5 5.4 3.5 Design Temp (Deg F) 75 50 99 59 59 Page 21 of 24 Size (MWe) Y ear 1989 1993 1997 1997 1999 Remarks (W-T-E) (Combined Cycle) (Combined Cycle) (Combined Cycle) (W-T-E) 30 40 150PDF Image | Concentrating Solar Power Commercial Application
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