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Title: Open cycle ocean thermal energy conversion steam control and bypass system

Abstract

Two sets of hinged control doors for regulating motive steam flow from an evaporator to a condenser alternatively through a set of turbine blades in a steam bypass around the turbine blades. The evaporator has a toroidal shaped casing situated about the turbine's vertical axis of rotation and an outlet opening therein for discharging motive steam into an annular steam flow path defined between the turbine's radially inner and outer casing structures. The turbine blades extend across the steam flow path intermediate the evaporator and condenser. The first set of control doors is arranged to prevent steam access to the upstream side of the turbine blades and the second set of control doors acts as a bypass around the blades so as to maintain equilibrium between the evaporator and condenser during non-rotation of the turbine. The first set of control doors preferably extend, when closed, between the evaporator casing and the turbine's outer casing and, when open, extend away from the axis of rotation. The second set of control doors preferably constitute a portion of the turbine's outer casing downstream from the blades when closed and extend, when open, toward the axis of rotation. The first and second sets ofmore » control doors are normally held in the open and closed positions respectively by locking pins which may be retracted upon detecting an abnormal operating condition respectively to permit their closing and opening and provide steam flow from the evaporator to the condenser.« less

Inventors:
 [1];  [2]
  1. (West Goshen, PA)
  2. (Radnor Township, Delaware County, PA)
Issue Date:
OSTI Identifier:
863604
Patent Number(s):
4210819
Assignee:
United States of America as represented by United States (Washington, DC) OSTI
DOE Contract Number:  
EG-77-C-03-1473
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
cycle; ocean; thermal; energy; conversion; steam; control; bypass; sets; hinged; doors; regulating; motive; flow; evaporator; condenser; alternatively; set; turbine; blades; toroidal; shaped; casing; situated; vertical; axis; rotation; outlet; therein; discharging; annular; path; defined; radially; inner; outer; structures; extend; intermediate; arranged; prevent; access; upstream; maintain; equilibrium; non-rotation; preferably; closed; constitute; portion; downstream; normally; held; positions; respectively; locking; pins; retracted; detecting; abnormal; operating; condition; permit; closing; provide; motive steam; ocean thermal; outer casing; vertical axis; turbine blade; thermal energy; flow path; energy conversion; turbine blades; closed position; radially inner; operating condition; closed positions; normal operating; steam flow; annular steam; path defined; cycle ocean; steam control; /290/60/

Citation Formats

Wittig, J. Michael, and Jennings, Stephen J. Open cycle ocean thermal energy conversion steam control and bypass system. United States: N. p., 1980. Web.
Wittig, J. Michael, & Jennings, Stephen J. Open cycle ocean thermal energy conversion steam control and bypass system. United States.
Wittig, J. Michael, and Jennings, Stephen J. Tue . "Open cycle ocean thermal energy conversion steam control and bypass system". United States. https://www.osti.gov/servlets/purl/863604.
@article{osti_863604,
title = {Open cycle ocean thermal energy conversion steam control and bypass system},
author = {Wittig, J. Michael and Jennings, Stephen J.},
abstractNote = {Two sets of hinged control doors for regulating motive steam flow from an evaporator to a condenser alternatively through a set of turbine blades in a steam bypass around the turbine blades. The evaporator has a toroidal shaped casing situated about the turbine's vertical axis of rotation and an outlet opening therein for discharging motive steam into an annular steam flow path defined between the turbine's radially inner and outer casing structures. The turbine blades extend across the steam flow path intermediate the evaporator and condenser. The first set of control doors is arranged to prevent steam access to the upstream side of the turbine blades and the second set of control doors acts as a bypass around the blades so as to maintain equilibrium between the evaporator and condenser during non-rotation of the turbine. The first set of control doors preferably extend, when closed, between the evaporator casing and the turbine's outer casing and, when open, extend away from the axis of rotation. The second set of control doors preferably constitute a portion of the turbine's outer casing downstream from the blades when closed and extend, when open, toward the axis of rotation. The first and second sets of control doors are normally held in the open and closed positions respectively by locking pins which may be retracted upon detecting an abnormal operating condition respectively to permit their closing and opening and provide steam flow from the evaporator to the condenser.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1980},
month = {1}
}

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