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Evaluation of HTGR cogeneration plant load-follow operations capability

Yan, X. ; Sato, Hiroyuki ; Tachibana, Yukio 

This paper describes the design of a modular HTGR system cogenerating electricity and process heat and discusses its operational feasibility of electric load follow using a new control scheme. The load follow operations are performed by controlling the reactor coolant inventory while keeping the primary system thermal conditions including reactor power, reactor temperature, and turbine temperatures unchanged. This control strategy is designed to achieve high thermal efficiency in a wide range of part electric load and, by minimizing thermal transient of the reactor, to enable response to rapid load follow demand. The newly proposed control strategy is evaluated by simulation of a bounding load-follow event.

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