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Home > HPAC Engineering > Magazine Issues > August 2012

August 2012

August 2012

Features

  • Aug. 1, 2012
    article

    Enhancing Air-Cooled-Chiller Performance With VFDs

    Air-cooled chillers long have been the choice for system designers who are focused on simplicity and low cost. A system based on an air-cooled chiller usually is less expensive to install and easier to maintain than other types, such as water-cooled systems. On the other hand, these advantages typically have come at the expense of lower efficiency....More
  • Aug. 1, 2012
    article

    IEQ: What Building Owners Need to Know

    Building owners and managers over the past decade have become increasingly knowledgeable about the importance of good indoor environmental quality (IEQ) in their buildings. Programs such as Leadership in Energy and Environmental Design (LEED), Green Globes, and the Building Owners and Managers Association International’s 360 Performance program have served to raise the level of awareness of all aspects of building performance. Fortunately, HVAC design engineers and facility managers correspondingly have also raised their games and become valuable partners to owners and managers who are striving to provide the best IEQ possible in their buildings....More
  • Aug. 1, 2012
    article

    Natural-Gas-Engine-Driven Heat Pumps

    Natural-gas-engine-driven heat pumps offer an economic alternative to gas boilers. While the concept of a natural-gas-engine-driven heat pump is not new, advances in internal-combustion-engine technology in the automobile industry have led to significant improvements in reliability and efficiency. Additionally, new emissions-control technology has led to cleaner emissions and lower criteria pollutants (contributors to smog)....More
  • Aug. 1, 2012
    article

    Backflow Prevention: The Last Line of Defense for Plumbing-System Safety

    In a piping system, water is intended to flow in one direction: from the supply to the point of delivery. Danger lurks when the pressure in a system exceeds the pressure of the supply. Anytime pressure in a system drops, even momentarily, the system is subject to backflow, back pressure, or back siphonage, opening the door to contamination. This can happen all too easily when a water main is shut off, a water main is broken, or water demand surges in a specific area....More

Columns

  • Aug. 1, 2012
    article

    How Do You Cross the Generational Divide?

    The fact is, in the United States today, there are fewer young people getting into the technical, engineering, and energy aspects of our economy than at any time previously....More
  • Aug. 1, 2012
    article

    O&M the Key to Keeping Green Buildings Optimized

    After a building has been optimized, proper operations and maintenance (O&M) becomes the tool that will enable it to sustain its best performance. As might be expected, as building systems become more efficient and more tightly controlled, they also become more complex. In turn, so does O&M. Therefore, this column assumes that everyone understands the importance of general maintenance of equipment to maximize its lifespan, optimize efficiency, and minimize operating costs. In green buildings, however, it often is necessary to go beyond the proverbial "boxes."...More

Departments

  • Aug. 1, 2012
    article

    HVAC Retrofit Sees 19th-Century Church Outfitted With 21st-Century Controls

    In 2011, the basilica of St. John the Baptist Cathedral still was relying on part of its original heating and piping system. Not only was the system past its prime, it was way beyond its life expectancy, inefficient, and at risk of failure. An extensive retrofit was needed. A team of architects, engineers, and HVAC and controls contractors would work together to bring the facility two centuries forward....More
  • Aug. 1, 2012
    article

    Data-Center Energy-Management System Reduces Costs Associated With HVAC

    To better meet the needs of local businesses and to draw new business from outside of the state, Tech Vault Inc., provider of data-center, colocation, private-cloud, disaster-recovery-hosting, and managed services, set out to turn a 20-year-old building in South Burlington, Vt., into a world-class, green data-center facility....More

News & Notes

  • Jul. 3, 2012
    article

    ASHRAE Recognizes Outstanding Achievements

    Sixty people were recognized for their contributions to ASHRAE and the building industry during ASHRAE’s 2012 Annual Conference, held June 23-27 in San Antonio....More
  • Jun. 26, 2012
    article

    ASHRAE Installs Officers and Directors

    ASHRAE installed officers and directors for 2012-13 during its Annual Meeting, held June 23-27 in San Antonio....More
  • Jul. 26, 2012
    article

    Taco Leader Endows Forum to Study Manufacturing

    The Brookings Institution, a private nonprofit organization devoted to independent research and innovative policy solutions, recently announced the launch of the John Hazen White, Jr. Forum on Public Policy, named for the president and chief executive officer of Taco Inc., who will endow the forum and fund activities related to manufacturing and innovation....More
  • Jul. 6, 2012
    article

    LonMark Adds Testing Sites

    LonMark International, a non-profit association supporting certification and education related to interoperability standards for control networking, recently announced the addition of nearly 500 proctored testing sites for LonMark Certified Professional (LCP) candidates in the United States and Canada....More

Products & Literature

  • Aug. 1, 2012
    article

    New Products

    Compact geothermal heat pump The Envision2 Compact series offers high efficiencies and a cabinet that is among the industry’s smallest, making it a good choice for boiler/tower applications and the replacement of aging water-source heat pumps. Available ......More
  • Aug. 1, 2012
    article

    Product Spotlight

    HVAC drive belts HVAC power belts are manufactured to exclusive “set constant plus” tolerances to ensure optimal fit and are engineered to offer superior performance in extreme heat. The belts’ heat-resistance and ability to minimize stretch and ......More
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