Tuesday, December 14, 2010

【 Weak current College 】 several common electrical heating


Electric heating is the only energy of electric energy for the heating system. At home and abroad are already widely applied on the market of electric heating: electric boilers, heat pumps, electric heating film, geothermal cables, electric heaters, heating and air conditioning.

Convection heating

Electric boiler heating system: electric boiler by electrical components power reached the heating purposes. Use of electric heating boiler tube heating water by heating pipe heating heating means.
Electric boiler system divided into regenerative and direct thermal-two, the difference between the two lies: regenerative electric boiler system is in the power grid trough periods, taking water as htm, use the electric boilers heating water-heating pipes and stored in a heat storage tanks, power peak, electric boiler stops running, stored in a heat storage tank of hot water heating to the heating system. While direct thermal-electric boiler heat storage tank systems are not, water is heated directly to the heating system and heating. This heating method and traditional heating methods, changing the boiler fuel electricity instead of coal and oil.
Heat pump heating system: heat pump system is the heat given off by the condenser to heating systems, use a small amount of power, from low grade heat source (such as groundwater) absorb heat, thermodynamic cycle through reverse, raising it to a high-quality thermal energy of a device. In summer you can absorb the indoor heat exchanger for cooling, cold and warm.
Electric heater heating: electric heater is made of metal cover of resistors with the heatsink, and power-generating heat. Electric heaters are divided into regenerative and direct thermal-two. Regenerative electric heater core parts for the electrical bar and magnetic regenerator brick, automatic control and thermal protection components. And regenerative electric boiler system similar to regenerative electric heater is in the trough periods, will power the magnetic regenerator tile heating and the heat stored in regenerative power brick, in peak periods, the electric heaters stopped, the heat by heat storage bricks to heat release.
Warm and cold air conditioning heating: air-conditioning heating means air conditioning system is the only way for winter heating, not as other heating methods of assisted, to add.

Radiation heating

Electric heating film: the electric heating membrane is an energized to be translucent polyester film fever, by conducting special inks, metal-carrying through printing, hot pressing in between two layers of insulation-polyester film made of a special kind of heating elements. It is laying in the Interior of buildings, walls and other surfaces to radiation in the form of heating. Electric heating film is a large area of electric energy for low-temperature radiant heat to enhance indoor objects and envelope surface temperatures, reduce environmental cold radiation on the human body to achieve heating effect, may be installed on the ceiling, floor and wall, with independent temperature control device that has a "winter in the Sun like a comfortable feeling."
Geothermal heating cable: geothermal heating is heating cable for heating, heating cable after powerup. It consists of heat conduction of (solid resistance line, carbon fiber), insulation, Earth wire, aluminum shielding protective NET, outer epidermis. The cable laying ceramic tile, marble, wood, carpet, will most of the radiant heat in the form of heating. Geothermal heating cable can be used to direct concrete floor room heating, can also be used for low-and heating during storage. Generally installed in the floor, to heat dissipation, high thermal efficiency. Since the heating from the bottom up, people's feet warm, sober head to expand the effective use of the area, is an ideal home heating products, with independent temperature control device for individual room heating, temperature, heating demand, intelligent control, metering, Basic does not need maintenance.

Several other electrical heating

PTC ceramic electric heating: advantage is warming faster, fever uniform, with no open flame, the temperature rose to some degree after will not continue to rise, there is no need to worry about excessive sweating, less power consumption at midnight. Generally have a waterproof function, you can use in the bathroom. The disadvantage is the convective wind speed is large, warm skin comfort noise, but somewhat less obvious. Market retail price for each 300-500 Yuan.
Quartz tube heaters: advantages of using radiation silk thermal, strong penetrability, fever-directivity. A compact, warming faster, the heat evenly, and waterproof explosion-proof, easy maintenance, easy to move. The disadvantage is that due to radiation heating, heat transfer proximity; heating wire more prone to deformation, quartz tube broken easily. Light glare, heat too centralized. Market retail price for each around $ 130.
Halogen tube heater: advantages of long life, can close distance heating, effective heating at 2 meters, more than 3 m thermal dropped, many halogen tube heater also comes with a timer, rotation, humidification and other functions. The disadvantage is that higher temperatures, is not suitable for long time on a local radio Grill, lamp type partial fever, has no place is still very cold. Not suitable for the elderly, infants and life cannot themselves, nor to sleep warm. Market retail price for each 100-200 Yuan.
Fengshanshi heater: advantage is heating speed, small size, mobile convenience, better insulation. The disadvantage is that fan rotation will bring the noise, the relatively high energy consumption, while you cannot turn off the heat, a, heat will instantly disappear, the service life is relatively short. Market retail price for each $ 200-600.
Air conditioning heating: advantage is the high thermal efficiency, easy to use, heating speed, the disadvantage is that the temperature drops or outdoor humidity, the air conditioning heating effect drops dramatically, the dramatic increase in power consumption. Price options.
Electric heaters: advantage is directly put energy into heat energy, thermostats, feel comfortable, keep the Interior can be a long time, and is not controlled by outdoor temperature influence, the disadvantage is that the greater power consumption. Price options.



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