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2. Patio heater - Wikipedia

   en.wikipedia.org/wiki/Patio_heater

   Some newer types of patio heaters are electrically powered radiative heaters that emit infrared energy onto nearby surfaces, which in turn heat up the surrounding air. Other styles of outdoor patio heaters include: Wall-mounted patio heater: fixed to a wall or structure making for safe operation

3. Radiant heating and cooling - Wikipedia

   en.wikipedia.org/wiki/Radiant_heating_and_cooling

   Outdoor radiant heaters allow specific spaces within an outdoor area to be targeted, warming only the people and objects in their path. Radiant heating systems may be gas-fired or use electric infrared heating elements. An example of the overhead radiant heaters are the patio heaters often used with outdoor serving. The top metal disc reflects ...

4. Infrared heater - Wikipedia

   en.wikipedia.org/wiki/Infrared_heater

   The efficiency of an infrared heater is a rating of the total energy consumed by the heater compared to the amount of infrared energy generated. While there will always be some amount of convective heat generated through the process, any introduction of air motion across the heater will reduce its infrared conversion efficiency.

5. The 11 Best Gas Patio Heaters for Outdoor Entertaining - AOL

   www.aol.com/9-best-gas-patio-heaters-191700923.html

   38,500 BTU Portable Patio Heater. The classic design of most patio heaters spreads heat widely in a radius around the center of the heater which can be an inefficient method depending on where you ...

6. Gas heater - Wikipedia

   en.wikipedia.org/wiki/Gas_heater

   Upright non-flued liquefied petroleum gas heater, 1970s A wall mounted gas heater that runs on either propane or natural gas.. A gas heater is a space heater used to heat a room or outdoor area by burning natural gas, liquefied petroleum gas, propane, or butane.

7. Outdoor heating - Wikipedia

   en.wikipedia.org/wiki/Outdoor_heating

   To this end, various outdoor heating appliances are available, including gas patio heaters, quartz or ceramic electric lamps, and wood burning chimenea and fire pits. [1] In an outdoor environment, convection would quickly carry away heat in the form of hot air, so all these methods emit various amounts of their total output as radiant heat ...