The EnOcean Alliance announced that it has signed up its 200th member company, NanoSense. NanoSense develops products using EnOcean and KNX technologies that regulate and optimize air quality inside buildings. Originally created in April 2008 by Distech Controls, EnOcean, Masco, MK Electric, Omnio, and Thermokon, the alliance now counts 200 members from 20 different countries.
This is a product round-up for new high-efficiency systems for light commercial and commercial applications. It highlights a variety of rooftop units and air handlers.
Safety is a priority when working on any mechanical equipment, but it is especially heightened when the equipment weighs several thousand pounds and is located on a roof. Some contractors schedule days and weeks on the installation and service for one client alone.
HVACR contractors who do work in the hotel-motel sector probably know it already - there is what has been described as “fundamental contradictions of sustainability in the hospitality industry.” For example, there may be a lot of talk of going green, but that may not mean action.
Some years ago it was common for air-cooled condensers to develop leaks, resulting in unpredictable shorter service life. By studying the causes, it’s possible to come up with solutions. It became obvious that vibration was the major culprit, and thermal expansion/contraction creates some specific problems where the hot gas first enters the coil.
If you believe industry statistics, the future is bright for people interested in careers as techs and installers. If you believe in the current state of the economy, then optimism is tempered. Or you might be somewhere in the middle. These different viewpoints form the basis of what HVAC contractors are looking at as the summer 2011 hiring season heats up.
At the AHR Expo, a large number of the attendees were contractors - and, a lot of them were looking for chillers. McQuay was among those exhibitors with new products. The NEWS worked with McQuay to draw a select group of contractors into the booth to perform a product tour and review, and videotape the proceedings.
A holistic approach to designing, installing, and operating central plants ensures reduced energy and operational costs, according to many involved in major building projects. One company picked up on this theme by announcing a new offering to help reduce energy consumption in central chilled water plants in buildings by up to 60 percent.
Source: Air-Conditioning, Heating, and Refrigeration Institute (AHRI). Industry figures are estimates that are derived from the best available figures supplied by a sample of AHRI member companies.
The NEWS’ annual Cooling Showcase has traditionally introduced the latest air conditioning units available for the upcoming summer season. The intent is to help contractors prepare for this busy period by doing the research that will help them to distinguish between brands. In this issue, we focus on the commercial side of the air conditioning industry.
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