server room: AC cooling requirements

[Alvin Oga]

hi ya

- its a hot day... so i went poking around ..

	http://www.ITX-Blades.net/BTU/

- how many BTU is needed to coool a server room ??

	# http://home.howstuffworks.com/ac4.htm
	# BTU is the amount of heat required to raise the
	# temperature of one pound (0.45 kg) of water
	# 1 degree Fahrenheit (0.56 degrees Celsius).

- AC ( air conditioners ) is measured in tons ... :-)

	One ton of air conditioning is equal to 12,000 BTU

- 1 BTU equals 1,055 joules

- rough guestimates ...

	BTU/hr cooling   = ( ((Amps * Volts) * 0.8) / 1000) * 3413

	Rough AC Tonnage = BTUs per hour/12000

- another estimate was 30BTU per sq ft, but i think that'd
  be for cooling a bedroom or living room sorta thing
  where you're ( 500 BTU ) the only heat source and sunshine

c ya
alvin