For nearly a decade, the use of R-290 (refrigerant-grade propane) has experienced a gradual adoption increase among U.S. foodservice applications.

Editor’s Note: This is the sixth and final article in our series on cold rooms.

This 40-to-80 ton water-cooled air conditioning unit features a cassette construction with small modular sections and footprint. It fits through a standard-size doorway and most elevator doors, facilitating a faster, money-saving installation process.

As with any refrigeration system, controlling the flow of refrigerant is vital in making a cold room operate properly. Two of the most common types of refrigerant control valves are thermostatic expansion valves and solenoid valves.

Editor’s Note: This is the fourth part in our series of articles on cold rooms.

The design and magnitude of a new residential indoor pool built onto a 21,000-square-foot, 100-year-old home named “Daybreak” in Montclair, New Jersey, confronted mechanical engineers with psychrometric and sustainability challenges on par with huge commercial indoor waterparks.

Johnson Controls has released version 3.4 of its SMART Equipment Control Firmware. The new SMART equipment firmware incorporates a new feature known as Continuous Reset Single Zone Control™ (CRSZ Control). Unlike the typical Single Zone Variable Air Volume (VAV) system operation, company reps said the CRSZ Control provides precise control of space comfort while maximizing energy savings.