Recent Blogs
Stevens Boiler
Stevens Boiler explained — porcupine-tube design, water circulation, steam rate, and real marine examples from the 1804 Stevens Twin-Screw and beyond.
Oscillating-cylinder Steam Engine
How an Oscillating-cylinder Steam Engine works — trunnion porting, valve timing, and worked example for marine launches and model engineering.
Napuer Rotary Engine
How the Napier Rotary Engine works, its design history, worked example calculating power output, plus tradeoffs vs reciprocating steam engines for marine use.
Herreshoff Boiler
Herreshoff coil boiler explained — how the helical tube generator raises steam fast for steam launches, with sizing math, worked example and tradeoffs.
Franchot Rotary Engine
Franchot rotary engine explained — how the double-acting rotating cylinder converts steam into shaft power, with worked example for a heritage marine plant.
Exhaust Jet Condenser
Learn how an exhaust jet condenser works in steam plant — vacuum creation, injection water sizing, and real-world use in marine and stationary engines.
Boardman Rotary Engine
Learn how the Boardman rotary engine converts steam pressure into shaft torque using a sliding-vane disc. Sizing, tradeoffs, and real marine applications.
Berrenburg Rotary Engine
Berrenburg Rotary Engine explained — how the rotating piston block delivers torque, why it replaced reciprocating engines in some marine and pump applications.