Cooling Load Formula:
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Definition: This calculator estimates the cooling capacity needed for a server room or data center based on room size, occupants, and heat-generating equipment.
Purpose: It helps IT professionals and facility managers determine the appropriate cooling system capacity to maintain optimal server room temperatures.
The calculator uses the formula:
Where:
Explanation: The calculation accounts for heat gain from the room itself (337 BTU/sq ft), occupants (400 BTU/person), and all heat-generating equipment.
Details: Accurate cooling load estimation prevents equipment overheating, ensures system reliability, and optimizes energy efficiency in server environments.
Tips: Enter the room area in square feet, number of regular occupants, total BTU/hr from all equipment, and BTU/hr from lighting. All values must be ≥ 0.
Q1: Why is the room area multiplied by 337?
A: This accounts for heat gain through walls, windows, and roof (typically 300-350 BTU/sq ft for server rooms).
Q2: How do I find my equipment's BTU output?
A: Check equipment specs or use: (Watts × 3.41) = BTU/hr. For servers, sum all power supply ratings.
Q3: Should I add a safety margin?
A: Yes, consider adding 10-20% to the calculated value for future expansion and safety.
Q4: What about other heat sources?
A: For significant additional heat sources (e.g., large UPS systems), add their BTU output to the equipment value.
Q5: How does this relate to tons of cooling?
A: 12,000 BTU/hr = 1 ton of cooling. Divide your result by 12,000 to get required cooling tons.