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Comparative Cost Analyses 15 10 5 0 Condenser Installed Costs ($/kWe) = 91.404(LMTD)-0.8364 051015202530 Log Mean Temp. Difference, deg. F Figure 5-7 Supplier Quote Correlation Comparison with Published Costs As a final “sanity check,” a comparison was made with some values found in the technical literature and in submissions to licensing hearings. The three sources used were • Material submitted as part of the Elk Hills (Miller, 2000) licensing hearings, • Material submitted as part of High Desert Power Project licensing hearings (Ledford, 1999), and • Hutton (1999), in which wet towers and surface condensers are compared with evaporative condensers. Detailed information on the particular design values used in each case is not necessarily available, nor is it always known whether installation, delivery, engineering, or other contingencies are included. Therefore, these comparisons are simply to determine whether the values are in the general range that would be predicted by the correlation used in this study. Costs given for the 170-MWe (steam) Elk Hills plant (Miller, 2000) and the 240-MWe (steam) High Desert Power Project (Ledford, 1999) are $1.9 and $2.9 million respectively, corresponding to $11/kWe and $12.1/kWe. No information was available to calculate either the log mean temperature difference or the cost per unit area, but the points fall within the range of costs shown in Table 5-3 and Figure 5-7. The case studies presented by Hutton (1999) range from $8 to $12.5/kWe, corresponding to the middle to high end of the range shown in Figure 5-7 using a conversion of 1,000,000 lb/hr steam flow being equivalent to 170MWe. However, the cost per square foot in those case studies was apparently fixed at $25, considerably higher than the values developed above. 5-13 $/kWePDF Image | Comparison of Alternate Cooling Technologies for California Power Plants Economic, Environmental and Other Tradeoffs
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