How to Size Computer Room AC
Sizing an air conditioner for a computer room is critical because of all of the extra heat generated by the electrical equipment. If the temperature gets too high, the equipment can be damaged. Since much of the heat comes from the equipment, you cannot simply base the estimate on the size of the room. You need to take into consideration the square footage, number of occupants, heat generated by lighting, heat generated by the equipment and heat from sunlight, if any. Does this Spark an idea?
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Instructions
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1
Determine the Btu requirements for the size of the room. Measure the length and width in meters. Multiply the length times the width times 337. For example, if your room was eight meters long and five meters wide, you would require 13,480 Btu.
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2
Determine the Btu requirements for people working in the room by multiplying the number of people by 400. For example, if two people will work in the room, you would add 800 Btu.
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3
Determine the cooling needs of the lighting by multiplying the total wattage of the lights by 4.25. For example, if there were 600 watts of lighting, you would add 2,550 Btu.
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4
Determine the cooling needs of the computer equipment by multiplying the wattage by 3.5. To be on the safe side, use the maximum wattage rating on the equipment. For example, if all the equipment had a maximum wattage rating total of 5,000, you would need to add 17,500 Btu.
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5
Determine the increase in cooling needs from sunlight, if any, because many computer rooms are windowless. Measure the length and width of the windows in meters to calculate the volume. Multiply the area of windows primarily oriented north by 870 and the area of windows facing south by 165. For rooms with no blinds, multiply the total by 1.5. For example, if you have 5 square meters of north-facing windows and 2 square meters of south-facing windows and no blinds, you would need to add 7,020 Btu.
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6
Add the cooling requirements from steps one through five to find the total cooling capacity requirements for your computer room AC.
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