Recent Blogs
Roller Piston Rotary Engine: How It Works, Diagram, Parts, Formula, and Uses Explained
How a Roller Piston Rotary Engine works — internal geometry, sealing, torque output, and real steam-power applications from marine launches to mill drives.
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...
Hazelton Boiler: Historical Layout and Heat-Balance Calculator | FIRGELLI
Learn the central-drum radial-tube arrangement and compare assumed heat-transfer quantities. The calculator is a general energy balance, not a boiler rating.
Eclipse Return Tubular Marine Boiler Mechanism: How It Works, Parts, Diagram & Evaporation Formula
Trace the Eclipse boiler’s direct and return gas passes. Calculate steam mass flow and heat output from measured heating surface, evaporation and enthalpy rise.