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.
The YORK® brand of Johnson Controls has released two new commercial units — the 6.5- to 12.5-ton Predator™ series and 15- to 23-ton Large Sunline™ series. With efficiencies reaching as high as 21 IEER, these products comply with requirements set by the United States Department of Energy (DoE), ASHRAE 90.1-2013, 2015 International Energy Conservation Code, and the Consortium for Energy Efficiency’s Advanced Tier*.
Mitsubishi Electric Trane HVAC US LLC (METUS) introduced its CITY MULTI® N-Generation outdoor units. The N-Generation features a footprint up to 30 percent smaller than previous models and offers more design flexibility due to improvements in vertical piping limits.
Friedrich is now offering its VRP® (Variable Refrigerant Packaged) Heat Pump system in a larger three-ton size. Originally available in one or two-ton capacities typically used for lodging and hospitality properties, Friedrich is debuting the larger capacity VRP as a solution for multi-family and other light-commercial applications.
The Rittal Blue e+ cooling units are now available in a roof-mounted version. The units, suitable for enclosures from a size of 800 mm by 600 mm (W x D) upwards, have a cooling output of 1.3 kW. The company says this means that cold air can also flow from above around the devices installed inside the enclosure, such as frequency converters. Alternatively, cooling can also be provided in combination with the new VX25 large enclosure system as a complete integration solution.
Danfoss has added new 8.5-ton and 11-ton variable-speed compressors with intermediate discharge valves to its VZH range. The new inverter scrolls are ideal for data center close controls and rooftop units for energy-efficient cooling.
Engineered Systems magazine’s May 2019 issue examines the role of HVAC systems and power in critical facilities via the University of Utah’s new, LEED Gold-certified Downtown Data Center; the role of codes and standards in mission critical facilities; why an engineer should consider a product’s functional requirements during the specification process; and much more.