Shao Shufeng,Yan Junjie,Liu Jiping,Lin Wanchao
(School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an กก710049, China)
Abstract:Based on the equivalent enthalpy drop theory, the mathematical models for calculating equivalent enthalpy drop, efficiency and heat absorption of the regeneration extraction steam were established according to the characteristics of thermal systems of supercritical pressure power units. Then the rules for analyzing the economy of thermal system changes were presented. The correctness was verified by an example. The result shows that the proposed economy analysis method has a short-cut concept and is easy to be used for calculating the index change of supercritical pressure power units.
Keywords:steam cooler;double reheat;thermal system;economy
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