Mechanical & Plumbing
January 28, 2016 - Johnson Controls says it is enhancing its HFC product lines to be fully compatible with the non-flammable, low-GWP (global warming potential) refrigerant—Opteon XP10 (R-513A). The company says the York centrifugal and screw chillers ranging from 125 to 6000 tons (440 to 21,100 kW) are now compatible with R-513A.
January 15, 2016 - Underground heat islands in cities have enormous geothermal potential, say Karlsruhe Institute of Technology researchers, as warm groundwater can be used to produce energy for heating and cooling with the help of geothermal or groundwater heat pumps. But how do you identify the best locations?
December 22, 2015 (Updated April 6, 2016) - According to the U.S. CPSC, Carrier is recalling roughly 285,000 packaged terminal air-conditioners (PTACs) and packaged terminal heat pumps (PTHPs) sold under the Bryant, Carrier and Fast brand names because the power cord plug can overheat, posing a fire hazard to consumers.
December 18, 2015 - GE has issued a recall for about 33,500 of its Zoneline packaged terminal air conditioners (PTAC) and heating units. It says moisture from outdoor air can accumulate near the unit’s heater when it is operated with the vent door continuously open. This, along with two shorted electrical components, can create an electrical ground path and arcing, posing a risk of fire, GE explains.
November 20, 2015 - RAE Coils, a division of RAE Corporation, has new turbulators for water/glycol coils in HVAC systems. The turbulators are designed to improve heat transfer and therefore efficiency of HVAC systems, says RAE, utilizing glycol solutions to protect coils from freezing in cold environments.
November 2, 2015 - Pentair says it has now increased the protection level of its Hoffman Proair air conditioners NEMA 4 and NEMA 4X to IP66, especially for use in harsh and corrosive environments.
October 19, 2015 - Mitsubishi Electric, a manufacturer of uninterruptible power supplies (UPS), has announced the AEGIS series UPS as the successor to its 9900A series. AEGIS is a three-phase, on-line double-conversion system and features Insulated Gate Bipolar Transistor (IGBT) technology. The series is available in 80, 100, 150, 160, and 225 kVA and is UL924 listed.
October 16, 2015 - Technical Systems (TSI), a division of RAE Corp., has released the adiabatic pre-cooling evaporative X-change (APEX) cooling technology. APEX combines evaporative cooling technology with air-cooling to deliver “low-maintenance, highly efficient” cooling systems, says TSI, making it ideal for data centers, hospitals, colleges and universities, etc.
March 23, 2015 - Heating and air conditioning systems provider Lennox revealed an array of enhanced technology early this year at the 2015 AHR Expo in Chicago, including new VRF technology featuring indoor, outdoor units and controls; the Dave Lennox Signature Collection XC 25/XP 25 AC/heat pumps; and the SunSource Commercial Energy System.
February 3, 2015 - One of the most popular questions that comes up for homeowners considering renovations these days is whether to replace existing heating systems with an energy-efficient heat pump.
September 24, 2014 - Schneider Electric has expanded its Uniflair LE cooling unit portfolio with the HDCV 4500 and 5000 models, which it says addresses the needs of data centres where higher cooling capacities and optimized efficiency are required. Intended for large data centres—primarily cloud and colocation facilities—the new Uniflair LE models utilize a newly designed coil system and under-floor fan module promising 20% higher cooling capacity, while drawing less power. Now available with a 575V input power option for Canadian users, additional features include a 7-in. touchsceen display; integrated serial card for integration to BMS using Modbus protocol; and five air discharge configurations.
September 24, 2014 - Siemens Building Technologies has added the KNX-capable RDF800KN model to its range of communications-enabled room thermostats, which it says offers numerous energy-efficiency functions. Boasting an intuitive operating concept, the touch functionality promises to make the device easy and convenient to use so that it is particularly suitable for applications in hotels and residential buildings. The unit supports a range of applications for fan coils, heating/cooling systems and heat pumps, while the room temperature is controlled either with the integrated temperature sensor or an external room or return air sensor. According to Siemens, the RDF800KN automatically selects the most energy-efficient settings, which could include demand-based air handling, individual room control, setpoint limits, timer programs and presence/absence detection.
September 10, 2014 - The NuTone EZFit bathroom ventilation fan is designed with clamp connections instead of screws for faster installation in retrofit construction. The unit installs roomside and attaches to the drywall rather than a joist or truss, eliminating the need to crawl into the attic, says NuTone, adding that EZLock tabs clamp the housing onto the drywall with just a screwdriver without the need of a mounting frame. According to the company, the fan delivers up to 50% more power than typical installed fans to eliminate foggy mirrors, moisture and odours faster than standard bath fans, and up to 70% quieter than typical installed fans.
August 26, 2014 - Dyson says its Airblade Tap hand dryer washes and dries hands without having to leave the sink, as infrared sensors pinpoint hand positions and release water from the tap stem. Once hands are wet and drying is requested, integrated circuitry computes the information and activates the Dyson digital motor V4, creating two high velocity sheets of air on the tap’s branches, describes the company. It adds that the hand dryer sends sheets unheated filtered air at 675kph towards hands, drying them in 14 seconds.
August 13, 2014 - Legend Power Systems says it has launched an electrical energy conservation product designed to address the North American condo and apartment tower market. According to Legend, Harmonizer saves energy by regulating voltage at the point where power enters a building, reducing energy usage by up to 8%. The product is best suited for apartment or condo buildings with 100+ suites per building, it continues, where the property manager is unable to directly replace older inefficient end use loads such as incandescent light bulbs found in tenant occupied spaces.

Subscription Centre

 
New Subscription
 
Already a Subscriber
 
Customer Service

Most Popular

We are using cookies to give you the best experience on our website. By continuing to use the site, you agree to the use of cookies. To find out more, read our Privacy Policy.