Recent Blogs
Stevens Boiler Mechanism: How John Stevens' 1804 Porcupine Water-Tube Marine Boiler Works
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 It Works, Parts, Diagram, Animation and Real Uses
Explore a rocking steam cylinder and direct piston-to-crank connection. Compare indicated power from mean effective pressure, bore, stroke and speed.
Herreshoff Boiler: Historical Coil and Surface-Area Comparison | FIRGELLI
Read about the historical coil circuit and compare assumed surface area with cylindrical tube length. Pressure strength, heat transfer, steam quality and operating settings are...
Exhaust Jet Condenser: Injection-Water Calculator | FIRGELLI
Calculate an ideal jet-condenser water balance from steam flow, enthalpy and water temperatures. Explore mixed discharge and saturation-pressure reference.
Berrenburg Rotary Engine Mechanism: How It Works, Parts, Diagram, and Uses Explained
Explore the Berrenberg rotary engine’s opposed pistons and synchronized cavity valve. Compare mean shaft torque, work and power from entered performance assumptions.