Century Refrigeration, a division of RAE Corporation, has released the new Centinel™ Intelligent Defrost Control System. Company officials report that the control system improves refrigeration system energy efficiency, eliminates icing and fogging, and reduces operating costs.
Sensaphone® has introduced a cellular version of its Sentinel™ system that provides 24/7 monitoring of unattended equipment and remote locations where Internet or Ethernet connectivity is unavailable. When the Sentinel system detects a problem such as leaks, temperature changes and power outages, it immediately sends alerts by phone, text, or email over standard cellular networks provided by AT&T or Verizon.
General Tools has introduced the new Mini-Anemometer/Psychrometer. The DAF3009 can measure all parameters associated with installing, testing, and fine-tuning the performance of an HVACR system. This includes airflow volume, airspeed, enthalpy, ambient temperature, dew point temperature, wet bulb temperature, wind chill index, and relative humidity.
Wilo USA has introduced its new Stainless Steel Closed Coupled (BLZ) centrifugal pumps. The pumps are base-mounted featuring end suction-centerline discharge design, compact design, a foot-mounted volute, and permanently lubricated ball bearings. BLZ series pumps, which are suitable and approved for pumping clean, potable water, are easy to install, operate, and service, according to Wilo reps.
RBI has introduced the latest edition to its ultra-high efficiency condensing boilers and water heaters. The Infinite Energy2 (IE2) utilizes a state-of-the-art Radial Variable Circulation (RVC) stainless steel heat exchanger for maximum heat transfer and operating efficiencies of up to 98%.
For use with its commercial FHP heat pumps, Bosch Thermotechnology offers a DDC Controller option that is preprogrammed and factory installed to be jobsite ready. The optional FHP DDC Controller is installed with the unit’s Unit Protection Module (UPM) which controls the heat pump’s operations and monitors the safety controls that protect it.
Bitzer US has started production on its new Ecoline of reciprocating compressor. The company says the new series is transferring all the advantages of the proven Ecoline series for R134a refrigerant to an even broader range of applications in order to provide customers with added value.
Spirax Sarco has released the MTI10 Insertion and MTL10 Inline Mass Thermal Flowmeter for measurement of gases and air. The MTI10/MTL10 provides measurement of clean, dry gases and air using constant temperature sensing for fast response and low flow accuracy.
Leaning on experience and data from various K-12 cities and projects, the author pursues some less conventional design approaches. They may revolve around radiant heating and/or cooling, but depending on school size and other factors, the smart use of heat recovery, DOAS, and improved central plants could also put a project on the HVAC honor roll.