Give Me a Technical Advice for White Fume

Here are some articles on cooling tower plume abatement. Basically, it is just mist/fog, so I wouldn't use the word "fume."

Thank a lot

Please see also the duplicate thread, in which Ace Boeringa suggests the possibility of an air-cooled tower (radiator). This will avoid plume issues, but may be more costly.

Thanks for your good advice.

I understand the lower inlet air temperature can increase the turbine output but I do not know how the white plume (fume) can be eliminated?

In my humble opinion there is a more potential for the ice formation to GT air inlet filter by the moistured and lower inlet temperature air and in cold winter.

Part of the assumption is that the total cooling tower fan air volume will be MAYBE 40% of the total turbine inlet volume.

During HOT weather, the cooler, humid air will reduce the temperature of the turbine inlet air- say 40% at 78FDB and 100% RH and 60% at 90FDB and 50% RH = 85.2FDB and about 70% RH.

In cold weather, your scenario might occur, because the mixed air temperature would fall below the dew point, so water would be created and likely turn to snow or equivalent, which MIGHT cause a problem.

As an alternate approach-

Your OP mentioned that the generators will be "combined cycle"- essentially a CoGen system where the hot exhaust gas is used to make HP steam to drive a turbine. The exhaust gas, after the coil being used to make hot water to make steam will be about 50F higher than the saturated temperature of the steam.

That means that a system making 300 PSIG steam (422F saturated) would have an exhaust of about 475F.

SO- in warm weather (> 60F), use the "intake" as described with no problems, and below that temperature, use the same duct as an EXHAUST duct- carrying the hot exhaust to above the tower. The 100% exhaust volume will mix with the 40% tower exhaust (now around 60F or so and still 100% RH) to become 356F and WELL below 100% RH- no more flume and the turbine is seeing fairly cold inlet air- very close to its rating point. Everyone wins.

You will only have to install a set of dampers at the inlet (below the TEE that goes to the tower and also to the exhaust duct (which will also have a set of dampers- one to block the "normal" exhaust path (likely vertical) and one (likely horizontal) to allow the exhaust to go to the TEE at the inlet duct. The exhaust velocity can be fairly high- 2500-3000 FPM because the duct will be fairly large which will have very low pressure drop even at those velocities.