Open cycle ocean thermal energy conversion pdf

The oceans cover a little more than 70 percent of the earths surface. Principle and preliminary calculation of ocean thermal. Opencycle ocean thermal energy conversion fsec energy. Ocean thermal energy conversion otec types renewable. Ocean thermal energy conversion and open ocean mariculture. It removes the dissolved noncondensable gases from water and fed it to the evaporator. Open cycle ocean thermal energy conversion system in this system, the warm water from the ocean surface is fed to the deaerator. One of the major advantages of the open cycle system is that the water condensed from the turbine exhaust is fresh, not salt water, and so the plant can also serve as a source of drinking water as. The opencycle can, therefore, be configured to produce desalinated water as well as electricity. Conceptual design of an opencycle ocean thermal energy. Otec ocean thermal energy conversion principle your. Open cycle ocean thermal energy conversion net powerproducing experiment ocotec nppe a cooperative effott of solar energy research institute pacific international center for high technology research argonne national laboratory d. Parsons august 1984 to be presented at the asme winter meeting new orleans, louisiana 9 14 december 1984 prepared under task no.

The low energy conversion efrciency of otec means that more than 90% of the thermal energy extracted from the ocean s surface is wasted and must be rejected to the cold, deep sea water. Ocean thermal energy conversion otec is a process that employs the natural. Ocean thermal energy conversion linkedin slideshare. Open cycle ocean thermal energy conversion otec research. Several techniques have been proposed to use this ocean thermal resource. This page contains ocean thermal energy seminar and ppt with pdf report. Closed cycle ocean thermal energy conversion systems use a working fluid with a low boiling point, ammonia for example, and use it to power a turbine to generate electricity. Practical limitations mean that the largest open cycle turbine that can be built today is around 2.

Technical readiness of ocean thermal energy conversion. The warm seawater vaporizes the fluid in the heat exchanger which then turns the turbines of the generator. Open cycle otec warmer surface water is introduced through a valve in a low. Pdf the ocean thermal energy conversion strategies and.

Revisit ocean thermal energy conversion system springerlink. The cycle flow chart and the conceptual temperatureentropy ts. Cost effective otec ocean thermal energy conversion. Darsonvals original concept employed a pure working fluid that would evaporate at the temper ature of warm sea. Records available from experimental plants demonstrate technical. Warm seawater is taken in from the surface of the oceans and cold water from the deep at 5 o. Ocean thermal energy conversion technology britannica. Opencycle ocean thermal energy conversion otec research. This paper discusses about the ocean energy, ocean thermal energy potential, ocean thermal energy conversion by the close, open and hybrid cycles. To date there are basically three types of otec systems developed to harness the ocean heat a closedcycle, an opencycle and a hybridcycle. An investigation of this analysis revealed that a triplestage rankine open cycle has the.