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Title: Method of preventing the accumulation of micro-organisms in thermal energy conversion systems

Abstract

In an ocean thermal energy conversion system utilizing solar energy stored as heat in tropical waters to generate electricity, the evaporating and condensing functions of the heat exchangers are interchanged in order to prevent the accumulation of micro-organisms on their surfaces. The surfaces of the heat exchangers are also mechanically brushed or scraped so as to remove any thin films of microbial slime. In order to remove additional micro-organisms from the surfaces of the heat exchangers, the flow of hot and cold sea water through each of the heat exchangers is interchanged on a daily basis. Micro-organisms from the warm surface waters that attach themselves to one heat exchanger surface will be destroyed by the cold water that flows through that heat exchanger on the next day. The organisms that live in the cold water at great depths cannot survive the next day's warm water environment which is caused by alternating the flow to the two heat exchangers.

Inventors:
; ;
Publication Date:
OSTI Identifier:
6790265
Patent Number(s):
US 4062189
Assignee:
Pacific Power and Protein, Inc.
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 29 Sep 1976
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; HEAT EXCHANGERS; CLEANING; OCEAN THERMAL POWER PLANTS; BIOLOGICAL FOULING; FOULING; MICROORGANISMS; OPERATION; REMOVAL; TEMPERATURE GRADIENTS; POWER PLANTS; SOLAR POWER PLANTS; 140800* - Solar Energy- Ocean Energy Systems

Citation Formats

Mager, D, Heronemus, W E, and Woodhead, P M.J. Method of preventing the accumulation of micro-organisms in thermal energy conversion systems. United States: N. p., 1977. Web.
Mager, D, Heronemus, W E, & Woodhead, P M.J. Method of preventing the accumulation of micro-organisms in thermal energy conversion systems. United States.
Mager, D, Heronemus, W E, and Woodhead, P M.J. Tue . "Method of preventing the accumulation of micro-organisms in thermal energy conversion systems". United States.
@article{osti_6790265,
title = {Method of preventing the accumulation of micro-organisms in thermal energy conversion systems},
author = {Mager, D and Heronemus, W E and Woodhead, P M.J.},
abstractNote = {In an ocean thermal energy conversion system utilizing solar energy stored as heat in tropical waters to generate electricity, the evaporating and condensing functions of the heat exchangers are interchanged in order to prevent the accumulation of micro-organisms on their surfaces. The surfaces of the heat exchangers are also mechanically brushed or scraped so as to remove any thin films of microbial slime. In order to remove additional micro-organisms from the surfaces of the heat exchangers, the flow of hot and cold sea water through each of the heat exchangers is interchanged on a daily basis. Micro-organisms from the warm surface waters that attach themselves to one heat exchanger surface will be destroyed by the cold water that flows through that heat exchanger on the next day. The organisms that live in the cold water at great depths cannot survive the next day's warm water environment which is caused by alternating the flow to the two heat exchangers.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1977},
month = {12}
}