RSES System Design & Load Calculation

Question 1

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

Accepted Answer

To properly size the refrigeration equipment for the application

Answer

To determine the correct refrigerant type to use

Answer

To select the appropriate compressor oil viscosity

Answer

To establish the required electrical service amperage

Question 2

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

Accepted Answer

Ton of refrigeration

Answer

BTU

Answer

Kilowatt

Answer

Horsepower

Question 3

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

Accepted Answer

The walls, floor, ceiling, and other structural surfaces

Answer

Door openings during loading and unloading

Answer

The product being stored in the space

Answer

Lights and fans operating inside the refrigerated area

Question 4

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

Accepted Answer

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

Answer

The weight capacity rating of the refrigeration equipment

Answer

Heat added by people working inside the refrigerated space

Answer

The electrical load of the evaporator fan motors

Question 5

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

Accepted Answer

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

Answer

The rated BTU capacity of the condensing unit

Answer

Heat load caused by the refrigerant compressor

Answer

The weight of the refrigeration equipment installed

Question 6

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

Accepted Answer

15–20%

Answer

5–10%

Answer

25–35%

Answer

40–50%

Question 7

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

Accepted Answer

Pull-down load

Answer

Transmission load

Answer

Equipment load

Answer

Infiltration load