Performance Experiments on Ocean Thermal Energy Conversion System Using the Uehara Cycle

DOI

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Other Title
  • ウエハラサイクルを用いた海洋温度差発電システムの性能試験

Abstract

Experimental study on the performance of an Ocean Thermal Energy Conversion (OTEC) plant was carried out using the Uehara cycle, which uses an ammonia/water mixture as the working fluid. Shell and plate type heat exchangers are used as an evaporator, a condenser, a regenerator and a heater. We estimated the system performance and the stability of the Uehara cycle for OTEC by means of steady operation with 29°C warm water temperature, 193.7kg/s warm water mass flow rate, 8°C cold water temperature, 111.1kg/s cold water mass flow rate and 30 kW turbine power for 5 hours. As a result, the system was highly stable. Under those conditions, the overall heat transfer coefficient of the evaporator was 1.401kW/(m2·K) and that of the condenser was 0.725kW-/(m2·K). The No.1 turbine output was 19.2 kW and the turbine efficiency was 60.1%. No.2 turbine output was 11.5 kW and the efficiency was 76.8%. The overall heat transfer coefficients of the evaporator and condenser were determined from the test to estimate the effect of the heat source mean velocity in the plate type heat exchangers.

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Details 詳細情報について

  • CRID
    1390001205452593920
  • NII Article ID
    130004675382
  • DOI
    10.11457/swsj1965.60.32
  • COI
    1:CAS:528:DC%2BD28XitVKmsb4%3D
  • ISSN
    03694550
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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