Recent Blogs
Disc Valve for Large Gas Pipes
Disc valves shut off and throttle large gas pipelines using a rotating disc. Learn sizing, Cv, torque, and failure modes for transmission and utility service.
Counter-weighted Gas Holder
Counter-weighted gas holders store low-pressure gas at constant pressure for utilities, biogas plants, and labs. See the formula, worked example, and tradeoffs.
Wet Gas Meter
Wet gas meter explained — how the rotating drum measures gas volume, where labs and biogas plants use it, plus a worked sizing example with...
Under-feed Heating Furnace
Under-feed Heating Furnace explained — how the screw retort feeds coal from below, sizing math, and real heating applications in homes, schools, and industry.
Siemens Electric Gas Furnace
How a Siemens electric gas furnace works — burner control, ignition sequencing, and modulation logic for industrial heating, with sizing math and real examples.
Petroleum Furnace
Petroleum furnaces burn oil to fire steam boilers and process heaters. Learn the burner physics, atomisation specs, and real refinery applications.
Petroleum Burner
Petroleum burner explained — how atomising oil burners work, key components, sizing formula, and real applications in marine boilers, kilns, and asphalt plants.
Ore Roasting Furnace
How an Ore Roasting Furnace works — multiple-hearth and fluidized-bed designs, sulphide oxidation chemistry, sizing math, and real mining examples.
Open-top Electric Furnace
How an open-top electric furnace works — heating elements, thermal losses, and sizing math for labs, dental studios, and small-scale metallurgy shops.
Oil Burning Melting Furnace
How an oil burning melting furnace works for metal casting — burner design, combustion air, fuel rates, and real foundry examples for aluminium and bronze.
Hot-water House Boiler
Hot-water house boilers heat homes by circulating water through radiators. Learn how they work, sizing math, efficiency tradeoffs and real install examples.
Gas-heated Incubator
Gas-heated incubators hold poultry eggs at 37.5°C using a flame-fired heat source. Learn the mechanism, sizing math, and hatchery applications.
Gas Pressure Regulator
How a Gas Pressure Regulator works — internals, sizing formula, droop curve, and a worked propane example for HVAC, industrial burners, and lab gas trains.
Gas Furnace
How a Gas Furnace works — burner, heat exchanger, blower, sizing math, BTU/hr calculations, and real residential and industrial examples from FIRGELLI.
Gas Crucible Furnace
Gas Crucible Furnace explained — how it melts non-ferrous metals, sizing the burner, fuel-air ratio, and real foundry examples from jewellers to brass shops.
Garbage Furnace
Garbage furnace explained — how mining-camp incinerators burn refuse on-site, design tolerances, sizing formulas, and a worked example for a 50-person remote camp.
Fuel Gas Burner
Fuel Gas Burner explained — how mixing tubes, orifices and flame ports work together to deliver clean combustion in heat treat, glass and process heating.
Fire Extinguisher
How a Fire Extinguisher works — pressure, agent selection, and discharge calculations for shop, marine, and industrial fire protection.
Electric Thermostat
How an Electric Thermostat works — bimetal strips, snap-action contacts, anticipators, and real wiring examples for HVAC, ovens, and industrial heaters.
Electric Heater
How an electric heater works — resistive element physics, power sizing, real heat-loss math, and named industrial examples from greenhouse to extruder barrel.
Electric Gas Lighter
How an electric gas lighter works — piezo and arc ignition explained, with formulas, real spark-gap numbers, and selection guidance for kitchens, BBQ and lab...
Electric Furnace
How an Electric Furnace works — resistance, induction and arc heating explained, with formulas, sizing math and real foundry and heat-treat examples.
Dry Gas Meter
Dry gas meter explained — diaphragm chambers, slide valves, and tangent linkage that meter natural gas flow to ±1% accuracy in residential and light commercial...
Crude Petroleum Burners
Crude petroleum burners atomize heavy oil for steam boilers and industrial furnaces. Learn how they work, atomization formulas, and real marine and refinery uses.
Cowles Electric Furnace
How the Cowles Electric Furnace smelts aluminium and refractory metals using carbon resistance heating. Operating principles, formulas, and worked examples.