Discussion
Match each cold store load in List I with its source in List II.
List I
A. Product load
B. Respiration load
C. Transmission load
D. Infiltration load
List II
1. Metabolic heat from living produce
2. Cooling produce from its arrival temperature
3. Warm moist air entering through doors and leaks
4. Heat conducted through walls, floor and roof
Select the correct match.
Answer: D
Correct answer: A-2, B-1, C-4, D-3
Each load is matched to its source. The product load (A) is the heat removed in cooling produce from its arrival temperature (2) - large but transient. The respiration load (B) is the metabolic heat living produce generates (1), continuous for the whole storage period.
The transmission load (C) is heat conducted through walls, floor and roof (4), set by the insulation and the temperature difference. The infiltration load (D) is warm moist air entering through doors and leaks (3), which is why door discipline and air curtains matter.
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