Economic and Performance Benefits Resulting From the Use of Large Diameter Fans on Air Cooled Heat Exchangers (A Case Study in the Use of Large Fan Air Cooled Condensers at the Neal Hot Springs Geothermal Power Plant, Oregon)

Jump to: navigation, search


OpenEI Reference LibraryAdd to library

Journal Article: Economic and Performance Benefits Resulting From the Use of Large Diameter Fans on Air Cooled Heat Exchangers (A Case Study in the Use of Large Fan Air Cooled Condensers at the Neal Hot Springs Geothermal Power Plant, Oregon)

Abstract
A significant improvement in air cooler technology was implementedat the Neal Hot Springs geothermal power plant in Vale,Oregon. Large cooling tower fans were used in an induced draftarrangement (fans above the heat exchanger). The total numberof fans was reduced from 270 x 12ft / 3.7m fans to 30 x 33ft /10m fans. The present value of the O&M and power savings totals$1.6 million dollars. The decision to use variable frequencydrives yielded additional power savings with a present value ofan additional $3.1 million dollars. While the capital costs werehigher, specific design elements were implemented to offset theseadditional capital costs. Computational fluid dynamics (CFD)was used to show that the large fan design virtually eliminateshot air recirculation yielding substantial annual generation andnet revenue benefits, compared to recirculation rates of small fanarrays that produced 5% to 35% recirculation rates.

Authors 
Kevin Kitz, Ryan Elliott and Ian Spanswick








Published Journal 
Geothermal Resources Council Transactions, 2012





DOI 
Not Provided
Check for DOI availability: http://crossref.org


Online 
Internet link for Economic and Performance Benefits Resulting From the Use of Large Diameter Fans on Air Cooled Heat Exchangers (A Case Study in the Use of Large Fan Air Cooled Condensers at the Neal Hot Springs Geothermal Power Plant, Oregon)

Citation

Kevin Kitz,Ryan Elliott,Ian Spanswick. 2012. Economic and Performance Benefits Resulting From the Use of Large Diameter Fans on Air Cooled Heat Exchangers (A Case Study in the Use of Large Fan Air Cooled Condensers at the Neal Hot Springs Geothermal Power Plant, Oregon). Geothermal Resources Council Transactions. 36(N/A):95-103.