The cost-performance characteristics of heat exchangers for the ocean thermal power cycle are studied. Linde prefers shell-and-tube exchangers with the seawater tube side to minimize corrosion and fouling. The use of heat transfer enhancements is considered in order to decrease the exchanger cost. Corrosion and biofouling by seawater are studied in connection with choice of materials of construction. Preferred methods of control are chlorination and continuous mechanical cleaning. The hydraulic problems involved in the evaporator design are studied. The use of sprayed bundles, and of multiple flooded bundles, is considered. A system optimization program is written and used to obtain heat exchanger designs optimum from the system viewpoint. Exchangers using enhanced tubes cost 942 $/KW for a 100-MW plant, or 33% less than with plain tubes. The cost penalty for substituting multiple flooded bundles for sprayed evaporatory bundles is 325 $/KW.

Media Info

  • Features: References;
  • Pagination: p. 461-484
  • Serial:
    • Volume: 5

Subject/Index Terms

Filing Info

  • Accession Number: 00168296
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: Mar 29 1978 12:00AM