【机械工程】加热器、液体燃料油炉

immersion heater

heating body (heater, radiator, heating element)

feed-water heater with plain ended pipes for steam

bitumen heater, mobile (bitumen melting boiler, mobile)

air heater

feed-water heater (feed-water preheater) air preheater

storage heater, water heater

tube heater