While fans are often used to cool people, they do not actually cool air (if anything, electric fans warm it slightly due to the warming of their motors), but work by evaporative cooling of sweat and increased heat convection into the surrounding air due to the airflow from the fans. Thus, fans may become ineffective at cooling the . Ceiling fans typically rotate more slowly than other types of circulating fans , such as electric desk fans. In certain applications, such as in regenerative braking with traction motors in the transportation industry, electric motors can also be used in reverse as generators to convert mechanical energy into electric power. Found in applications as diverse as industrial fans , blowers and pumps, machine tools, household appliances, .
The electric fan was one of the most important electric inventions of all time.
Fans are necessary in computers, lasers, large LED lights, petrol and electric automobiles, the space station and countless other things.
The fan as used in HVAC systems allows . Sanyo Denki succeeded in the mass-production of AC fans in. Electric Fan Specification Chart. See table for complete operation specifications on each fan controller kit. English dictionary definition of electric fan.
Objects, dust, or water may enter the motor providing they cannot have any detrimental effect upon its operation. Two numbers follow the letters IP. The first number defines resistance to dust and . An easy-to-understand explanation of how motors use electricity and magnetism to drive machines, with clear illustrations and photos.
There are probably two in your computer for starters, one spinning your hard drive around and another one powering the cooling fan. Its blades are hidden in its base. Decreased conductivity means that the PSU will convert more of the input electric energy into thermal energy (heat).
This cycle of increasing temperature and decreased efficiency continues until the PSU either overheats, or its cooling fan is spinning fast enough to keep the PSU adequately supplied with comparatively cool . Ducted fans usually have an odd number of blades to prevent . With this type of fan drive mechanism, the fan speed cannot be varied unless the motor speed is adjustable. Air conditioning automatically provides faster speed because . This heats up the air, which then leaves the heater, warming up the surrounding room. They operate with considerable noise caused by the fan. Their advantage is that they are .
No comments:
Post a Comment
Note: only a member of this blog may post a comment.