Walk-in Cooler/Freezer Load Calculation
The total refrigeration load consists of four main components:
- Transmission load: Heat gain through walls, ceiling, and floor (Q = U x A x delta-T)
- Product load: Heat removed from product to bring it to storage temperature
- Infiltration load: Warm air entering through door openings
- Internal loads: Lights, fan motors, people, and equipment
Compressor is typically sized for 16-18 hours of run time per day to allow for defrost cycles and capacity margin.