Performance analysis of an OTEC plant and a desalination plant using an integrated hybrid cycle

Journal Article · Wed May 01 04:00:00 EDT 1996 · Journal of Solar Energy Engineering

DOI:https://doi.org/10.1115/1.2847976· OSTI ID:250792

Uehara, Haruo; Miyara, Akio; Ikegami, Yasuyuki ^[1]; Nakaoka, Tsutomu ^[2]

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1. Saga Univ. (Japan)
2. National Fisheries Univ., Simonoseki, Yamaguchi (Japan). Dept. of Marine Engineering

A performance analysis of an OTEC plant using an integrated hybrid cycle (I-H OTEC Cycle) has been conducted. The I-H OTEC cycle is a combination of a closed-cycle OTEC plant and a spray flash desalination plant. In an I-H OTEC cycle, warm sea water evaporates the liquid ammonia in the OTEC evaporator, then enters the flash chamber and evaporates itself. The evaporated steam enters the desalination condenser and is condensed by the cold sea water passed through the OTEC condenser. The optimization of the I-H OTEC cycle is analyzed by the method of steepest descent. The total heat transfer area of heat exchangers per net power is used as an objective function. Numerical results are reported for a 10 MW I-H OTEC cycle with plate-type heat exchangers and ammonia as working fluid. The results are compared with those of a joint hybrid OTEC cycle (J-H OTEC Cycle).

• Sponsoring Organization: USDOE
• OSTI ID: 250792
• Journal Information: Journal of Solar Energy Engineering, Journal Name: Journal of Solar Energy Engineering Journal Issue: 2 Vol. 118; ISSN JSEEDO; ISSN 0199-6231
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
CLOSED-CYCLE SYSTEMS
DESALINATION PLANTS
DUAL-PURPOSE POWER PLANTS
FLASHING
HYBRID SYSTEMS
OCEAN THERMAL ENERGY CONVERSION
OCEAN THERMAL POWER PLANTS
SEAWATER