Specifications for Triple-Expansion Twin-Screw Propelling Engines: With Boilers Auxiliary Machinery (Classic Reprint)

Excerpt from Specifications for Triple-Expansion Twin-Screw Propelling Engines: With Boilers Auxiliary Machinery

The condensers will be made of composition and sheet brass. There will be one condenser for each propelling engine. Each main condenser will have a cooling surface of about square feet measured on the outside of the tubes, the water passmg through the tubes. For each propelling engine there will be two single-acting vertical air-pumps worked by a two-cylinder vertical in verted simple engine. The main circulating-pumps will be of the centrifugal type, one for each condenser, worked independently. The propellers will be right and left, of manganese-bronze, or approved equivalent metal.

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