What’s a space heater?
A heater is a device designed to heat an enclosed space.
A room heater is generally used to heat a small room and is usually used instead of a central heating system, which heats several interconnected rooms at the same time.
Permanent heating systems can burn natural gas, propane, fuel oil or wood pellets, use electricity for heat resistance or use a heat pump, which can also provide air conditioning.
Electric heaters are best suited for portable use because gas heating without a fixed chimney can be very dangerous.
Types of auxiliary heaters
Air heaters can be divided into two types: those that transfer their heat mainly through convection to the desired space and those that do so through heat radiation.
With convection heaters, the heating elements directly heat the air or oil or other fillers, which in turn release heat to the air. The air then heats objects and people in the room.
Convectors are suitable for supplying constant and diffuse heat in well-insulated rooms.
Oil heaters heat slowly but do not reach dangerous surface temperatures; fan operated heaters with wire elements produce hot air faster but can be dangerous for fire.
A specific type of convector is a stove with a fan.
The main advantage of radiators (also called infrared radiators) is that the infrared radiation they produce is directly absorbed by clothing and skin without preheating the indoor air. They are therefore suitable for heating people in poorly insulated rooms or even outdoors. This also increases the distance between people and the heating system.
Halogen emitters are an example of radiant heating. They convert up to 86% of their input power into radiant energy, the rest is lost as conductive and convective heat.
Most air heaters, including oil heaters and natural stone heaters, are connected to an energy source, usually a power outlet. The power of the appliances is measured in kilowatts (kW), which makes it easy to calculate the cost of heating in an hour, as electricity is expressed in kilowatt hours (kWh).
The two main health risks of heating systems are fire and carbon monoxide poisoning. The last risk concerns gas and kerosene heaters, but not electric heaters.
The risk of fire can be reduced by low surface temperatures (as in the case of oil convection heaters) or by switches that interrupt the power supply when the heater accidentally falls over (often found at the base of halogen heaters), or by thermal cut-off switches.
Natural stone heating systems are not dangerous in case of fire or carbon monoxide poisoning and can be a safer alternative. However, the surface temperatures of stone stoves can be considerable, although they do not cause direct burns because heat transfer is slow. That is why they are usually installed high up on walls or ceilings, away from children.
In the United States, Underwriters Laboratories supports UL 1278 for portable electric heaters and UL 1042 for portable and stationary electric board heaters. The General Service Administration used the W-H-193 specification for electric heaters, but in 1995 it was withdrawn in favour of the UL standards. For more information on the safety of portable heaters, please visit the website of the Ministry of Energy Conservation. In addition, EPA currently does not designate ovens as ENERGY STAR qualified.
The source: Wikipedia
electric heater uses,space heater usage
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