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Air handlers in Europe and Australia and New Zealand now commonly use backward curve fans without scroll or "plug fans". These are driven using high efficiency EC (electronically commutated) motors with built in speed control. The higher the RTU temperature, the slower the air will flow. And the lower the RTU temperature, the faster the air ...
These motors are sometimes called DC motors, sometimes EC motors and occasionally DC/EC motors. DC stands for direct current and EC stands for electronically commutated.. DC motors allow the speed of the fans within a fan coil unit to be controlled by means of a 0-10 Volt input control signal to the motor/s, the transformers and speed switches associated with AC fan coils are not required.
A typical "portable" dehumidifier can be moved about on built-in casters. A dehumidifier is an air conditioning device which reduces and maintains the level of humidity in the air. [1] This is done usually for health or thermal comfort reasons or to eliminate musty odor and to prevent the growth of mildew by extracting water from the air. It ...
Keep in mind that even the largest model only has a coverage area of 500 feet. So if you're looking to clear the air in a very large space, check out our winners with coverage areas in the 800 to ...
One thing to keep in mind is that the CDC recommends that adults get 150 minutes of moderate to vigorous-intensity exercise per week, so if walking is your main form of exercise, you want to make ...
A small, twin-engine aircraft with only the pilot inside crashed near a busy highway in Texas on Wednesday, according to officials. The incident, under investigation by the Federal Aviation ...
Digital systems are inherently less susceptible than analogue systems, and also offer far easier ways (such as software) to implement highly sophisticated protection and error-correction measures. In 1985, the USA released the ISM bands for low-power mobile digital communications, leading to the development of Wi-Fi and remotely-operated car ...
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