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2. Absorption refrigerator - Wikipedia

   en.wikipedia.org/wiki/Absorption_refrigerator

   Absorption refrigerators are commonly used in recreational vehicles (RVs), campers, and caravans because the heat required to power them can be provided by a propane fuel burner, by a low-voltage DC electric heater (from a battery or vehicle electrical system) or by a mains-powered electric heater.

3. Vixen (RV) - Wikipedia

   en.wikipedia.org/wiki/Vixen_(RV)

   Since diesels do not develop waste heat quickly, there was also an auxiliary diesel heater that could raise the temperature of the engine coolant. This helped with winter starting, keeping the RV warm, and the water hot. The heater was fuel-efficient and didn't need to stop for propane to fuel it. Unfortunately, it was notorious for needing ...

4. Electric heating - Wikipedia

   en.wikipedia.org/wiki/Electric_heating

   An electric heater is an electrical device that converts an electric current into heat. [1] The heating element inside every electric heater is an electrical resistor , and works on the principle of Joule heating : an electric current passing through a resistor will convert that electrical energy into heat energy.

5. Energy conversion efficiency - Wikipedia

   en.wikipedia.org/wiki/Energy_conversion_efficiency

   90–95% (multiply by the energy efficiency of electricity generation to compare with other water-heating systems) Electric heater: Electrical to thermal ~100% (essentially all energy is converted into heat, multiply by the energy efficiency of electricity generation to compare with other heating systems) Others: Firearm: Chemical to kinetic

6. Recreational vehicle - Wikipedia

   en.wikipedia.org/wiki/Recreational_vehicle

   An example of a Class C recreational vehicle, recognisable by the extension of the cabin over the cab Motor home Map symbol used by the US NPS to indicate an RV campground. A recreational vehicle, often abbreviated as RV, is a motor vehicle or trailer that includes living quarters designed for accommodation. [1]

7. Thermoelectric cooling - Wikipedia

   en.wikipedia.org/wiki/Thermoelectric_cooling

   Thermoelectric cooling uses the Peltier effect to create a heat flux at the junction of two different types of materials. A Peltier cooler, heater, or thermoelectric heat pump is a solid-state active heat pump which transfers heat from one side of the device to the other, with consumption of electrical energy, depending on the direction of the current.