HVAC Cooling Formula:
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Definition: This calculator estimates the cooling capacity needed for a server room based on IT equipment wattage and other heat sources.
Purpose: It helps IT professionals and facility managers determine the appropriate HVAC capacity to maintain optimal server room temperatures.
The calculator uses the formula:
Where:
Explanation: IT equipment wattage is converted to BTU/h (1W = 3.41 BTU/h) and combined with other heat sources to determine total cooling needs.
Details: Proper cooling prevents equipment overheating, ensures reliable operation, and maintains energy efficiency in data center environments.
Tips: Enter the total wattage of all IT equipment and any additional heat sources. All values must be ≥ 0.
Q1: Why is 3.41 the conversion factor?
A: 1 watt of power generates 3.412 BTU/h of heat, based on the standard conversion between electrical power and heat energy.
Q2: What counts as "other" heat sources?
A: This includes lighting (about 4 BTU/h per watt), people (about 400 BTU/h per person), and any other equipment in the room.
Q3: Should I add a safety margin?
A: Yes, it's recommended to add 10-20% to the calculated value to account for future expansion and temperature spikes.
Q4: How do I find my IT equipment wattage?
A: Check power supply ratings or use power monitoring tools. For servers, sum the nameplate wattage of all devices.
Q5: Does this include humidity control?
A: No, this calculates only cooling capacity. Humidity control requires additional HVAC considerations.