Practice Test Geeks(RSES) Refrigeration Service Engineers Society Certification Practice Test
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System Design & Load Calculation Flashcards

7 cards from real RSES practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. What is the primary purpose of performing a refrigeration load calculation before system design?

    Answer: To properly size the refrigeration equipment for the application

    Load calculations determine the total heat that must be removed, which dictates the proper sizing of condensing units, evaporators, and related components.

  2. Which of the following is the standard unit used to express refrigeration capacity in the United States?

    Answer: Ton of refrigeration

    A ton of refrigeration equals 12,000 BTU/hr, and is the standard US unit for expressing refrigeration system capacity.

  3. The 'transmission load' in a refrigeration system refers to heat that enters through:

    Answer: The walls, floor, ceiling, and other structural surfaces

    Transmission load is the heat that conducts through the building envelope (walls, ceiling, floor) due to the temperature difference between inside and outside.

  4. What does 'product load' represent in a refrigeration load calculation?

    Answer: The heat that must be removed from goods being cooled or frozen

    Product load accounts for the heat content of the goods being stored or processed, including sensible cooling and any latent heat for freezing.

  5. When calculating refrigeration load, what is the 'equipment load' component?

    Answer: Heat generated by lights, fan motors, and other equipment inside the space

    Equipment load includes heat added by evaporator fan motors, defrost heaters, lights, forklifts, and any other heat-generating equipment operating inside the refrigerated space.

  6. What safety factor is most commonly applied to a calculated refrigeration load when selecting equipment?

    Answer: 15–20%

    A 15–20% safety factor is standard practice to account for variations in usage, product loading patterns, and unforeseen heat gains not captured in the calculation.

  7. Which load component must be included when a refrigerated warehouse receives large quantities of warm product throughout the day?

    Answer: Pull-down load

    Pull-down load is the additional capacity needed to reduce incoming warm product to the design storage temperature within an acceptable time period.