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Performance study of an OTEC system

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  • Ganic, E.N.
  • Moeller, L.

Abstract

This paper describes a series of studies carried out to analyse the performance of an Ocean Thermal Energy Conversion (OTEC) system. The objective function, , where A is the total heat exchanger area and Wnet is the net work output of the system, was used for the parametric and optimisation studies. By using the heat exchangers were directly related to the remaining OTEC components. Since changes in one component of the system invariably affect the rest of the system, it was thus possible to evaluate the combined effects on the OTEC power plant. The effects of the following parameters on system performance were investigated: ocean fluid velocity through the exchanger, log-mean temperature differences of the heat exchangers, heat transfer enhancement and cold seawater pipe diameter. It was concluded that for a 1 MWe OTEC power plant, the net output of the plant becomes zero when [Delta]T (the temperature difference between the hot and cold ocean streams) approaches 12·80°C. The power cycle used in this study was a simple closed Rankine cycle with ammonia as the working fluid.

Suggested Citation

  • Ganic, E.N. & Moeller, L., 1980. "Performance study of an OTEC system," Applied Energy, Elsevier, vol. 6(4), pages 289-299, July.
    • Handle: RePEc:eee:appene:v:6:y:1980:i:4:p:289-299
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    Cited by:

    1. Liu, Weimin & Xu, Xiaojian & Chen, Fengyun & Liu, Yanjun & Li, Shizhen & Liu, Lei & Chen, Yun, 2020. "A review of research on the closed thermodynamic cycles of ocean thermal energy conversion," Renewable and Sustainable Energy Reviews, Elsevier, vol. 119(C).
    2. Aydin, Hakan & Lee, Ho-Saeng & Kim, Hyeon-Ju & Shin, Seung Kyoon & Park, Keunhan, 2014. "Off-design performance analysis of a closed-cycle ocean thermal energy conversion system with solar thermal preheating and superheating," Renewable Energy, Elsevier, vol. 72(C), pages 154-163.

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