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York Variable Frequency Drives VFDs | HVAC Control

by High Performance HVAC | Direct Digital Controls | 2 comments

York Variable Frequency Drives VFDsYork Variable Frequency Drives VFDs | HVAC Control - Variable Frequency Drives or VFDs have added a whole new dimension to energy efficiency and control. These drives, or VFDs, are hooked up to two different York VAV air handlers that have two three-phase motors a piece. (more…)

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HVAC Random Tip Box

HVAC Tip - Did you know the human body produces approximately 250 BTU/h when sleeping? Here is a basic list of the approximate BTU/h produced by the human body for various activities:
  • Watching Television - 400 BTU/h (any sedentary activity)
  • Cleaning the house - 700 BTU/h (moderate activity)
  • Mowing the Grass w/push mower - 1800 BTU/h (heavy activity)
  • Running a marathon - 2400 BTU/h (extreme activity)
The number of people occupying a dwelling or space is a consideration in the load calculation for sizing air conditioning systems simply because humans do give off heat. BTW, the Matrix over blew the numbers. In the movie Morpheus states humans give off over 25,000 BTU's. Only the author of this website is that hot..............))))))

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