Thermal Envelope Gain & Loss Sizer
Estimate space thermal load by evaluating building dimensions, climate multipliers, occupancy, and equipment gains.
Thermal Load Formula:
\( Q_{\text{envelope}} = (\text{Area} \times C_{\text{climate}} \times F_{\text{ceiling}} \times M_{\text{insulation}}) + (N_{\text{occ}} \times 400) + Q_{\text{equip}} \)
Where insulation quality multipliers scale from 0.85 (Excellent build) to 1.30 (Poor insulation).
Space Parameters
Floor Area
600 sq ft
Total Thermal Load
23,800 BTU/hr
Required Tonnage
1.98 Tons
Thermal Load Heat Breakdown
Building Envelope Load:
21,000 BTU/hr
Occupant Body Heat (400 BTU/person):
1,600 BTU/hr
Internal Equipment Heat:
1,200 BTU/hr