The effect of condensate load adjustment technology(CLAT) on low temperature economizer system(LTES) is nonnegligible. To investigate the influence characteristics

experimental study on a domestic supercritical 660 MW unit was carried out. Moreover

by establishing the transient simulation model for heat transfer performance of the LTES

the test results were numerically investigated. The results show that

the flue gas temperature and water temperature at the LTES outlet had a long response and retardation time with the adoption of CLAT

but the fluctuation of the operational parameters was slight and the system disturbance was small

thus the unit's safe

stable and economic operation could be ensured. The effect of condensate flow on the LTES increased with the unit load. The amplitude and rate of the flue gas and water temperature at the LTES outlet increased gradually under the condition with the same step change

and the variation of flue gas temperature at the LTES outlet was smaller than that of the water temperature. The calculation results were in good agreement with the experimental data

verifying the accuracy and applicability of the established model. The above research results can provide references for CLAT transformation for units equipped with LTES

and the simulation method can provide basis for prediction of load response rate for boilers.