enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Forced-air gas - Wikipedia

   en.wikipedia.org/wiki/Forced-air_gas

   Older furnaces sometimes relied on gravity instead of a blower to circulate air. [1]Gas-fired forced-air furnaces have a burner in the furnace fueled by natural gas.A blower forces cold air through a heat exchanger and then through duct-work that distributes the hot air through the building. [2]

3. Forced-air - Wikipedia

   en.wikipedia.org/wiki/Forced-air

   Extracts heat from the environment, using either the ground or air as the source, via the refrigeration cycle. Requires less energy than electric resistance heating and possibly more efficient than fossil fuel fired furnaces (gas/oil/coal). Air source types may not be suitable for cold climates unless used with backup (secondary) source of heat.

4. Register (air and heating) - Wikipedia

   en.wikipedia.org/wiki/Register_(air_and_heating)

   During winter months, for example, an air conditioning register can be closed to prevent cold air from being pulled from the room. This allows the hot air to mix more completely with the cold air in the room, improving the efficiency of the HVAC system. [7] (The return should be efficient enough to draw off the cooler air.) [10] [11]

5. Central heating - Wikipedia

   en.wikipedia.org/wiki/Central_heating

   An air source heat pump can be used to air condition the building during hot weather, and to warm the building using heat extracted from outdoor air in cold weather. Air-source heat pumps are generally uneconomic for outdoor temperatures much below freezing. In colder climates, geothermal heat pumps can be used to extract heat from the ground ...

6. Glossary of HVAC terms - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_HVAC_terms

   A component of an HVAC system that adds heat to air or an intermediate fluid by burning fuel (natural gas, oil, propane, butane, or other flammable substances) in a heat exchanger. gas furnace heat exchanger A gas furnace heat exchanger is responsible for the transfer of heat from inside the furnace into the air outside the furnace.

7. Blowing engine - Wikipedia

   en.wikipedia.org/wiki/Blowing_engine

   A blowing engine is a large stationary steam engine or internal combustion engine directly coupled to air pumping cylinders. They deliver a very large quantity of air at a pressure lower than an air compressor , but greater than a centrifugal fan .