International Power Technology

Chun-Nan Chang

Dah Y Cheng

James J Hamill

Ramarao Digumarthi

William Conlon

An improved procedure for cold start-up of closed loop boiler set and Cheng cycle system wherein the venting step, the boiler swelling problem and blowdown step of the conventional start-up are eliminated by use of an external pressure source to increase the operating pressure in the evaporator section which minimizes premature phase change and accompanying volume increase.

Method and apparatus for improved start-up procedures in conventional

An improved shutdown procedure, which minimizes the potential for steam condensation in the superheater section, combustion chamber and turbines during the coast to halt of the engine maintains high temperatures until all the steam has passed through the system.

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Los Altos, CA, United States of America

Chun-Nan Chang