Refrigeration Plant Operator B Full Practice Test 2026

To determine the maximum capacity of an ammonia receiver holding 1000 pounds of liquid at 90°F, it's important to understand the concept of the liquid ammonia's density at specific temperatures. At 90°F, the density of liquid ammonia can be referenced from standard ammonia density tables.

If the density of ammonia at 90°F is approximately 35.3 pounds per cubic foot, then we can calculate the volume of 1000 pounds of liquid ammonia. The formula to find the volume would be the weight of the ammonia divided by its density.

Using this calculation, we find that 1000 pounds of liquid ammonia at this temperature would occupy a specific volume in the receiver. The maximum capacity of the ammonia receiver depends on its design and safety factors specific to the pressure and environmental regulations.

The selected choice indicates that the answer representing an appropriate capacity of the receiver aligns with common safety and operational limits that consider expansion and control measures in plant operations. Hence, the figure of 800 pounds represents a safe operational limit for the ammonia in the receiver, allowing for fluctuations in volume due to temperature changes or operational load without risking over-pressurization or safety violations.

Understanding the maximum capacity helps ensure efficiency and safety in refrigeration plant operations while complying with industry standards