Mechanical & Plumbing
April 1, 2016 - The 13th book in ASHRAE’s Datacom Series, “IT Equipment Design Impact on Data Centre Solutions,” is now available. The book was developed by ASHRAE’s Technical Committee 9.9, Mission Critical Facilities, Data Centres, Technology Spaces and Electronic Equipment.
March 28, 2016 - Rittal Canada says its Blue e+ is a new generation of cooling units that represents a “quantum leap in terms of cost-effectiveness and energy conservation due to its speed-regulated components and patented heat pipe technology”.
February 24, 2016 - The C448 bi-national standard on the design and installation of ground source heat pump systems for commercial and residential buildings has just been published, CSA Group announced. It supersedes the previous editions published in 2013 and 2002 under the title, Design and installation of earth energy systems.
February 2, 2016 - Researchers are developing a new method of cooling in which heat and cold are transferred using ‘muscles’ made from a ‘shape memory alloy’, with the aim of achieving a cooling process that does not require climatically harmful refrigerants, and should consume less energy than current technologies.
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.

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