Comparative cost study of four wet/dry cooling concepts that use ammonia as the intermediate heat exchange fluid

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The projected costs of five alternative wet/dry power plant heat rejection concepts were studied under conditions imposed by hypothetical use in association with the San Juan Unit 3 plant, a fossil-fuel 550-MWe facility currently under construction near the ''Four Corners'' area of New Mexico. Four of the cooling systems use ammonia as a heat transfer medium between the steam condenser and the heat rejection tower, while the fifth uses the condenser cooling water for heat transport. The four alternative concepts were: the HOTERV plate fin with deluge augmented cooling (vertical round towers); the HOTERV plate fin with deluge augmented cooling ... continued below

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Pages: 151

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Tokarz, R.D.; Braun, D.J.; Johnson, B.M.; Allemann, R.T.; Braun, D.J.; Parry, H.L. et al. September 1, 1978.

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Description

The projected costs of five alternative wet/dry power plant heat rejection concepts were studied under conditions imposed by hypothetical use in association with the San Juan Unit 3 plant, a fossil-fuel 550-MWe facility currently under construction near the ''Four Corners'' area of New Mexico. Four of the cooling systems use ammonia as a heat transfer medium between the steam condenser and the heat rejection tower, while the fifth uses the condenser cooling water for heat transport. The four alternative concepts were: the HOTERV plate fin with deluge augmented cooling (vertical round towers); the HOTERV plate fin with deluge augmented cooling (horizontal configuration); the separate channel augmented tower (SCAT); a Curtiss-Wright extruded tube with integral fins, augmented with water flowing internally through separate channels, and the augmenting ammonia condenser (AAC); Curtiss-Wright tube augmented with a separate water-cooled condenser close-coupled to a conventional wet tower. The state-of-the-art method was the integrated wet/dry tower currently being constructed at the San Juan Unit 3 station. The comparable capital cost of each of the five concepts was calculated. Fuel savings resulting from using each of the advanced concepts vis-a-vis the reference integrated wet-dry cooling towers, expressed in barrels of oil per year, were calculated. The study indicates that the ammonia system with either the deluge scheme for wet/dry cooling, using the HOTERV plate fin heat exchange, or the Curtiss-Wright chipped-fin surface, (using either the SCAT arrangement or the separate water-cooled ammonia condenser for augmentation) are potentially more cost-effective than the state-of-the-art system for use in a power plant heat rejection system. This has been shown specifically only under conditions imposed by the site at the San Juan plant.

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Pages: 151

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Dep. NTIS, MF A01.

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  • Report No.: PNL-2661
  • Grant Number: EY-76-C-06-1830
  • DOI: 10.2172/6518772 | External Link
  • Office of Scientific & Technical Information Report Number: 6518772
  • Archival Resource Key: ark:/67531/metadc1203066

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Creation Date

  • September 1, 1978

Added to The UNT Digital Library

  • July 5, 2018, 11:11 p.m.

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  • Aug. 7, 2018, 7:56 p.m.

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Tokarz, R.D.; Braun, D.J.; Johnson, B.M.; Allemann, R.T.; Braun, D.J.; Parry, H.L. et al. Comparative cost study of four wet/dry cooling concepts that use ammonia as the intermediate heat exchange fluid, report, September 1, 1978; United States. (digital.library.unt.edu/ark:/67531/metadc1203066/: accessed January 18, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.