UNIQUE VACUUM PROBLEM
UNIQUE VACUUM PROBLEM
(OP)
We are operating a surface condenser of 45 MT/Hr condensing duty attached with a steam turbine. The condensing operating vacuum remained quite low i.e 0.60 ata against design of 0.14 ata. The cooling water flow through the condenser appears to be normal. The condenser shell has expansion bellow on one end. On recent inspection, we found some gap in the air-cooling section baffle plate (Shrouding the air cooling bundle) near expansion bellow. It is suspected that air/inert ingress through this gap is responsible for poor vacuum. The gap is across the expansion bellow,
Kindly suggest how to seal the gap as the inert plus steam directly bypasses the surface condenser tube bundle thereby creating a additional load on two stage ejector system.
Er. Rajan Kanwar
Kindly suggest how to seal the gap as the inert plus steam directly bypasses the surface condenser tube bundle thereby creating a additional load on two stage ejector system.
Er. Rajan Kanwar





RE: UNIQUE VACUUM PROBLEM
Your basic data is confusing. First you mention a water-cooled condenser; then, you mention an air-cooling section baffle. Which is it that you have?
Perhaps you have both, connected in series. Is this right? Which is first? How is the the "baffle plate" constructed?
Although this is difficult to visualize and probably more difficult to describe, could you be more liberal with your information?
Art Montemayor
Spring, TX
RE: UNIQUE VACUUM PROBLEM
The use of bio duct tape may be an alternative but its specifications and ability to withstand 0.16 ata pressure may be explained little further
THANKS
RAJAN