On the basis of the EBSILON software

an evaluation model for energy saving of steam cooler was established

and the influence of connection mode

bypass ratio

load rate

unit type and capacity on thermal economy of the steam cooler was analyzed.The results show that

in parallel and heating drain scheme

the energy saving of the steam cooler exhibits an "invered V" trend with the change of bypass ratio.In different layout schemes

the energy saving increases with the reducing load rate

and after adding the steam cooler

the superheat of the steam into the preheater which is connected with the steam cooler declines with the load rate.For units with different types and capacities

the energy saving performance of the steam cooler gets better with the main steam parameters and capacity

and because the effective enthalpy drop of the steam is relatively low

the energy saving effect of the air cooling units is greater than that of the water cooling units.