Load Calculation Sheet Xls: Heat

Your XLS sheet has produced a number: say of total cooling load. What now?

| | Quantity | Sensible (BTU/hr per unit) | Latent (BTU/hr per unit) | Total Sensible | Total Latent | | :--- | :--- | :--- | :--- | :--- | :--- | | People (Seated, office) | 10 | 210 | 180 | 2,100 | 1,800 | | People (Light work) | 5 | 420 | 600 | 2,100 | 3,000 | | Lighting (Fluorescent) | 2,000 W | 3.4 BTU/W | 0 | 6,800 | 0 | | Equipment (Computers) | 15 | 350 | 0 | 5,250 | 0 | | Equipment (Copier) | 1 | 1,200 | 1,000 | 1,200 | 1,000 | | Infiltration (Air changes) | 0.5 ACH | 1.08 x CFM x ΔT | 0.68 x CFM x ΔW | See formula | See formula | heat load calculation sheet xls

Name cells like Summer_ODT (Outdoor Design Temp) and Indoor_Temp so formulas read =Area*U-Value*(Summer_ODT - Indoor_Temp) instead of cryptic cell references. Your XLS sheet has produced a number: say

Look at the "Total Cooling Load" (Tons or BTU) and "Total Heating Load." ⚠️ Common Mistakes to Avoid Look at the "Total Cooling Load" (Tons or

Note: CLTD = Cooling Load Temperature Difference (from ASHRAE table). SCL = Solar Cooling Load factor.