2026 IIAR Conference and Expo ⋅ San Antonio, Texas ⋅ March 15–18, 2026

Fundamentals of Refrigeration: Heat

In scientific terms, “heat” is synonymous with energy and work. To explain heat, it is best to start small. All matter is made up of molecules. Molecules that contain heat energy are in constant motion. The speed of the molecular motion is directly related to the temperature of the matter. The faster, or more intense, […]

2026 Virtual Ammonia Refrigeration Training by Resource Compliance

Start the new year off right by participating in the newly released ‘2026 Virtual Ammonia Refrigeration Training’ by Resource Compliance. 2026-virtual-training-invitation-flyer This year we have two course options: Beginner Course Advanced Course  

Fundamentals of Refrigeration: Temperature

Simply defined, temperature is a measurement of the intensity of heat. “Intensity” is an important adjective to use when defining temperature. Everyone is familiar with things feeling “hot” or “cold”, but those terms are subjective and based solely on one’s perception of the intensity of heat energy. Temperature is measured using a thermometer. In the […]

Fundamentals of Refrigeration: Absolute Pressure and Gauge Pressure

While the pressure that the air exerts over the surface of the earth is approximately 14.7 pounds per square inch, most pressure gauges will read ‘0’ psi when open to the atmosphere. This is because pressure gauges measure a “relative pressure” compared to the surrounding atmospheric pressure. When a gauge is put on a tire […]