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2. Grate heater - Wikipedia

   en.wikipedia.org/wiki/Grate_heater

   This tubular fireplace grate heater has a large surface area heat exchanger in a compact design, with a fan or blower (fans and blowers are not the same) to multiply the effect of natural convection. This is a very basic tubular blower that sits under a grate and heats the air being pumped through it from the heat of the coals.

3. Forced-air gas - Wikipedia

   en.wikipedia.org/wiki/Forced-air_gas

   A small leak of combustion gases into the heated air can be dangerous to the occupants of the heated space, because of possible carbon monoxide build up. [2] A condensing forced-air furnace; flue pipes are plastic, not metal, because of the low waste-gas temperature. Plastic outlet for a condensing natural gas hot air furnace.

4. Forced-air - Wikipedia

   en.wikipedia.org/wiki/Forced-air

   The supply plenum directs air from the central unit to the rooms which the system is designed to heat. Regardless of type, all air handlers consist of an air filter, blower, heat exchanger/element/coil, and various controls. Like any other kind of central heating system, thermostats are used to control forced air heating systems. Forced air ...

5. Fireplace - Wikipedia

   en.wikipedia.org/wiki/Fireplace

   Fireplace with tubular grate heater, with a high surface area in its heat exchanger and a lift out ash tray to simplify cleanup. Some fireplace units incorporate a blower, which transfers more of the fireplace's heat to the air via convection, resulting in a more evenly heated space and

6. Grate firing - Wikipedia

   en.wikipedia.org/wiki/Grate_firing

   Grate firing is a type of industrial combustion system used for solid fuels. It now is used mainly for burning waste and biomass , but also for smaller coal furnaces. Capacities 0.3 to 175 MWth in industry and CHP

7. Grating - Wikipedia

   en.wikipedia.org/wiki/Grating

   Gratings over drains and air vents are used as filters, to block movement of large solids (e.g. people) and to allow movement of liquids. A register is a type of grating used in heating, ventilation, and air conditioning, which transmits air, while stopping solid objects.