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  2. Fan coil unit - Wikipedia

    en.wikipedia.org/wiki/Fan_coil_unit

    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.

  3. Air changes per hour - Wikipedia

    en.wikipedia.org/wiki/Air_changes_per_hour

    Air changes per hour, abbreviated ACPH or ACH, or air change rate is the number of times that the total air volume in a room or space is completely removed and replaced in an hour. If the air in the space is either uniform or perfectly mixed, air changes per hour is a measure of how many times the air within a defined space is replaced each hour.

  4. Air conditioning - Wikipedia

    en.wikipedia.org/wiki/Air_conditioning

    The efficiency of air conditioners is often rated by the seasonal energy efficiency ratio (SEER), which is defined by the Air Conditioning, Heating and Refrigeration Institute in its 2008 standard AHRI 210/240, Performance Rating of Unitary Air-Conditioning and Air-Source Heat Pump Equipment. [61]

  5. Variable air volume - Wikipedia

    en.wikipedia.org/wiki/Variable_air_volume

    The air blower's flow rate is variable. For a single VAV air handler that serves multiple thermal zones, the flow rate to each zone must be varied as well. Simple VAV terminal unit. A VAV terminal unit, [9] often called a VAV box, is the zone-level flow control device. It is basically a calibrated air damper with an automatic actuator. The VAV ...

  6. The 'laughingstock of the NFL' has suddenly started winning - AOL

    www.aol.com/news/laughingstock-nfl-suddenly...

    He has also run for 656 yards (46.9 per game), the second most in the league behind reigning MVP Lamar Jackson. “He’s the quarterback we’ve deserved for suffering all these years,” Huang said.

  7. Variable refrigerant flow - Wikipedia

    en.wikipedia.org/wiki/Variable_refrigerant_flow

    Variable refrigerant flow (VRF), also known as variable refrigerant volume (VRV), is an HVAC technology invented by Daikin Industries, Ltd. in 1982. [1] Similar to ductless mini-split systems, VRFs use refrigerant as the primary cooling and heating medium, and are usually less complex than conventional chiller-based systems.

  8. Homeowners Say Airbnb Guests Caused More Than $26,000 ... - AOL

    www.aol.com/homeowners-airbnb-guests-caused-more...

    Police said the Airbnb guests had allegedly produced more than 100 pounds of meth in less than a week, per the outlet. All three men were arrested on drug charges, according to WOWT. Want to keep ...

  9. DOJ v. DEI: Trump's Justice Department likely to target ... - AOL

    www.aol.com/news/doj-v-dei-trumps-justice...

    President-elect Donald Trump is set to challenge policies aimed at boosting diversity at companies and universities when he takes office next month, throwing the weight of the U.S. government ...

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