Abstract
A 1000MW ultra supercritical unit heat consumption rate was higher than design value 324.81 kJ/kW h, in this paper, by comparing the conventional test and assessment test, the result of the analysis of conventional test data at the same time, found out the factors that affect the unit heat consumption, low efficiency of unit mainly include cylinder and putting-in-service proactively reheat steam consumption reduction of warm water, small machine increase, feed water by-pass leakage, system other internal leakage, etc., application of equivalent enthalpy drop method, calculated the influence of the influence factors on the heat consumption of value.
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