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a smaller temperature gradient both between this space and unheated outside air as well as between the refrigerator and the (now cooler) lunch room. edit Mathematical analysis According to Joule's Law, the heat power produced by a resistor is: P = IV where P is the power in watts I is the current in amperes, and V is the potential difference in volts, and according to Ohm's Law I and V are related as follows: V = IR where R is the resistance of the heating element, in ohms. We can combine these two formulae to obtain the heat output from the heating element in terms of either current or voltage: For heaters powered by AC mains, I and V are the root mean square (RMS) values of current and voltage. edit See also Energy Portal Thermal efficiency Central heating Energy conservation HVAC Renewable energy Underfloor heating edit References ^ The Green Electricity Illusion, AECB, published 2005-11-11, accessed 2007-05-26 Retrieved from "http: en.wikipedia.org wiki Electric_heating" Categorie
electric heater T from knsq2.knams.wikimedia.org:3128 X-Cache: MISS from knsq5.knams.wikimedia.org X-Cache-Lookup: MISS from knsq5.knams.wikimedia.org:80 Via: 1.0 sq25.wikimedia.org:3128 (squid 2.6.STABLE13) electric heater, 1.0 knsq2.knams.wikimedia.org:3128 (squid 2.6.STABLE13) electric heater, 1.0 knsq5.knams.wikimedia.org:80 (squid 2.6.STABLE12) Connection: close Electric heating - Wikipedia electric heater, the free encyclopedia ** ** Electric heating From Wikipedia electric heater, the free encyclopedia (Redirected from Electric heater) Jump to: navigation electric heater, search For the album by Roger Taylor electric heater, see Electric Fire. An electric heater is an electrical appliance that converts electrical energy into heat. The heating element inside eve electric heater.
electric heater Ry electric heater is simply an electrical resistor electric heater, and works on the principle of Joule heating: an electric current flowing through a resistor converts electrical energy into heat energy. Contents 1 Design variations 1.1 Radiative heaters or "space heaters" 1.2 Convection heaters 1.3 Fan heaters or "forced convection heaters" 1.4 Storage heating 1.5 Domestic electrical underfloor heating 2 Environmental aspects 3 Economic aspects 4 Mathematical analysis 5 See also 6 References edit Design variations Although they all use the same physical principle to generate heat electric heater, electric heaters differ in the way they deliver that heat to the environment. Several types are described in the sections below. edit Radiative heaters or "space heaters" Radiative heaters contain a heating element that reaches a high temperature. The element is usually packaged inside a glass envelope resembling a light bulb and with a reflector to direct the energy output away from the body of the heater. The element emits infrared radiation that travels through air or space until it hits an absorbing surface electric heater, where it is partially converted to heat and partially reflected. This heat directly warms people and objects in the room electric heater, rather than warming the air. This style of heater is most useful in an area that is unable to be kept with minimal air.
electric heater Are described in the sections below. edit Radiative heaters or "space heaters" Radiative heaters contain a heating element that reaches a high temperature. The element is usually packaged inside a glass envelope resembling a light bulb and with a reflector to direct the energy output away from the body of the heater. The element emits infrared radiation that travels through air or space until it hits an absorbing surface electric heater, where it is partially converted to heat and partially reflected. This heat directly warms people and objects in the room electric heater, rather than warming the air. This style of heater is most useful in an area that is unable to be kept with minimal airf.
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