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Hanging patio heater: portable and small footprint; comes in electric only; Tabletop patio heater: ultra-portable and great for smaller groups or outdoor dining, but it uses a small propane tank; Patio heaters have become popular with bars and restaurants, since they extend the day and the season for their customers to sit outdoors.
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. Indoor household gas heaters can be broadly categorized in one of two ways: flued or non-flued, or vented and unvented .
The annual fuel utilization efficiency (AFUE; pronounced 'A'-'Few' or 'A'-'F'-'U'-'E') is a thermal efficiency measure of space-heating furnaces and boilers.The AFUE differs from the true 'thermal efficiency' in that it is not a steady-state, peak measure of conversion efficiency, but instead attempts to represent the actual, season-long, average efficiency of that piece of equipment ...
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 ...
For a heat engine, thermal efficiency is the ratio of the net work output to the heat input; in the case of a heat pump, thermal efficiency (known as the coefficient of performance or COP) is the ratio of net heat output (for heating), or the net heat removed (for cooling) to the energy input (external work). The efficiency of a heat engine is ...
The following substances are able to help oxidize a fuel for a catalytic heater at a useful rate: Platinum can be used with natural gas, propane and butane. It generates a surface temperature of 300–550 °C, lower than the 760 °C ignition point. [6] Pt heaters are the most common type. [7] Palladium can be used with hydrogen gas.