Technical

Food Wholesaler Sees Big Savings, Quick ROI with WiFi-Enabled Thermostats

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Through the installation of ecobee EMS thermostats in the massive warehouse and office campus of food wholesaler SUPERVALU® in January 2012, the company was able to slash energy usage and realize a return on investment within one week of installing the thermostats.


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Legionella, HACCP, and ASHRAE’s Pending Standard 188

By Matthew R. Freije
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If properly followed, American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) Standard 188 stands to affect the way water systems are managed in hundreds of thousands of buildings in the United States.


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Air Infiltration Testing: Five Reasons Why You Should Do It

By Colin Genge
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Energy codes are emerging or being updated nationwide. As air leakage testing becomes a requirement, some testers wonder what value it adds over informed visual inspections. Here are five reasons why blower door and duct leakage testing actually saves auditors’ and homeowners’ time and money.


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Evaporative Condensing Energy Efficiency

By George Varzaly
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Due to escalating energy costs over the past several years, supermarket chains are exploring new equipment designs to reduce their energy consumption. This article provides a detailed comparison of a typical supermarket refrigeration system designed with air-cooled condensers versus one with evaporative condensing.


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The New One-Two-Three Punch to Knock-Out IAQ Problems

By Chris Willette
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Indoor air quality (IAQ) products such as germicidal ultraviolet (UV-C) lights, gas phase air purification, and photo catalytic oxidation (PCO) have given contractors a “one-two-three punch” to help customers battle allergens, pathogens, odors, and other pollutants commonly found inside residential and commercial buildings.


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The Double Benefit of Monitoring Indoor Air Quality

By Gareth Evans
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It is a difficult balance to save energy and money yet maintain a comfortable and healthy indoor air environment. A logical solution to controlling indoor air pollution is good ventilation coupled with indoor air quality (IAQ) monitoring using gas sensors. This can ensure healthy indoor air as well as a more efficient HVAC system.


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Controller Delivers Energy Savings, Tighter Temperature Control, and Eliminates Icing Issue

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With ongoing refrigeration system problems, and no replacement parts available for its old Beacon systems, the McDonald’s owner in Godfrey, Ill., looked to the ingenuity of its service company, R.E.C. Service Corp., for a solution.


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Ductwork Helps Solve Lab Construction Challenge

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Firespray International has provided an innovative lab exhaust ductwork system for the University of California, Berkeley’s (UC Berkeley) Helios Energy Research Facility, solving a complex construction challenge at the 113,000-square-foot building under construction in downtown Berkeley.


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Sweating: A Potentially Dangerous Sign of a Bigger HVAC Issue

By Leon Kloostra
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Sweating presents itself in an air distribution system as moisture that forms on the faces of lay-in diffusers and T-bar grids adjacent to those diffusers, where this moisture collects and drips into the areas below. While sweating may be a simple annoyance, it may also be potentially dangerous. Either way, it is a symptom of a larger problem.


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Using Cloud Technology to Manage Fleets

By Steve Eppinger
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Fleet management can be challenging for HVAC contractors, which often have a number of service vans and trucks with no dedicated staff to oversee them. Fortunately, new Internet-based software programs and tools make it much easier for contractors to access and update records and perform other fleet management tasks.


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NEWSMakers: Rajan Rajendran

Rajan Rajendran, newly appointed director of the Emerson Innovation Center, talks about the new $35 million facility and how it will function on the University of Dayton campus. Posted on Aug. 29.

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