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Cooling BTU Per Square Foot Formula:
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Cooling BTU per square foot is a measure of cooling load density, representing the amount of cooling capacity required per unit area. It helps determine the appropriate air conditioning system size for a given space.
The calculator uses the simple formula:
Where:
Explanation: This calculation determines how much cooling power is needed for each square foot of space, which is crucial for proper HVAC system sizing.
Details: Proper cooling load density calculation ensures efficient energy use, prevents system over-sizing or under-sizing, maintains comfortable indoor temperatures, and extends equipment lifespan.
Tips: Enter total cooling BTU in BTU/hr and total square footage in ft². Both values must be positive numbers greater than zero for accurate calculation.
Q1: What is a typical BTU per square foot for residential cooling?
A: Typically 20-25 BTU per square foot for standard homes, but this can vary based on climate, insulation, and building characteristics.
Q2: How does this differ from heating BTU requirements?
A: Cooling and heating loads can differ significantly due to different heat transfer mechanisms and climate factors affecting each season differently.
Q3: What factors affect cooling load density?
A: Insulation quality, window area, ceiling height, occupancy, equipment heat loads, solar exposure, and local climate conditions.
Q4: When is a higher BTU per square foot needed?
A: In hot climates, poorly insulated buildings, spaces with high occupancy or equipment heat loads, and rooms with large window areas.
Q5: Can this calculator be used for commercial spaces?
A: Yes, but commercial spaces often have different load characteristics and may require more detailed Manual J calculations for precise sizing.