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
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