BTU

[Ayman Altounji]

Can anybody le me know BTU for compaq proliant ml370 and deskpro ep &en series desktops

[Ayman Altounji]

You can add up all the options you plan to add - each has a ampere rating. The ampere ratings on anything we sell is a worst case (max). The info below may help in showing you how we (tech support) comes up with the numbers we give you.

All that is required is to take the rating of the power supply(s) (worst case or maximum loading already) and do the math. Your actual operational btu's will always be less than this, but you'll have the plan in place for worst case.

We provide worst case, or full load ampere ratings because that's what the equpment is certified to withstand (or provide). Good engineering practices suggest that we build to most demanding specifications, not normal operations.

I do not have a steady state (normal operation) ampere figure for a server or server options. Again - If we assume worst case (starting current) then steady state current draw is less and would be easily handled by the power supply or cooling system to be installed.

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COMPAQ rates power supplies in MAX OUTPUT power. We need to figure the INPUT
power [total consumed]. Our supplies are about 66% efficient,
therefor take the maximum rated output power and divide by 0.66 [ or
conversely multiply times 1.5 ].

This is the MAX INPUT (worst case). TYPICAL conditions would likely be about
HALF of maximum.

NOTE: Monitors, printers and other peripherals are usually rated by INPUT
power, so this calculation is done for you (or almost done).

Take the POWER INPUT in WATTS and figure BTUs.

Multiply WATTS OF POWER INPUT times 3.41 to get BTU per hour.

BIBLIOGRAPHY:

ELECTRONICS VEST POCKET REFERENCE BOOK by Harry Thomas, 1969, Prentice-Hall
Inc., Englewood Cliffs, N.J., pages 40 - 43

Method: Take WATTS and convert to HORSEPOWER PER HOUR by dividing by 745.7 and
convert that to BTU by multiplying by 2545 or take 2545/745.7 = 3.41 (our
conversion factor)