A heat exchanger that combines an ejector operated with steam that constantly extracts air to maintain a vacuum state within the vacuum steam condenser and the condenser to reuse the steam by condensing it.

The vacuum steam condenser for steam turbine reduces heat delivery efficiency as air covers the tube surface if air comes in, and so the vacuum of the condenser breaks, resulting in the decrease of turbine efficiency.  

Therefore, the steam ejector is used to extract air from the condenser, and the condenser is used to collect steam when it escapes with the air by using the cooling water. The condensed water is sent back to the condenser through a steam trap for reuse and efficiency improvement. The ejector vacuum system consists of a one-layer ejector, interim condenser, two-layer ejector, and final condenser. So, no rotating equipment is installed, and maintenance/repair is easy.