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Home > HPAC Engineering > Magazine Issues > March 2012

March 2012

March 2012

Features

  • Mar. 1, 2012
    article

    Green Innovations in Underfloor Air Distribution

    A properly designed UFAD system takes advantage of thermal stratification. The key is to have a diffuser that rapidly mixes air before it penetrates the stratification layer at the upper end of the occupied zone. The pressurized plenum (the area between the slab and the raised floor) essentially is a large duct maintained at a constant pressure differential—typically, 0.05 to 0.10 in. w.g.—to the room above. This pressure is maintained through the supply of conditioned air from a number of supply-duct terminations...More
  • Mar. 1, 2012
    article
    HPAC Engineering

    2012 AHR EXPO REPORT

    The 2012 International Air-Conditioning, Heating, Refrigerating Exposition (AHR Expo), held Jan. 23-25 at McCormick Place in Chicago, was my 10th AHR Expo in 13 years and easily my busiest. Throwing prudence to the wind—and showing utter disregard for my feet—I packed as many booth appointments and press events into my schedule as I felt logistically possible, which ended up totaling 45. The result was two-and-a-half exhausting, but informative, days. Following are the highlights....More
  • Mar. 1, 2012
    article

    Applying DOAS With Heat Pipes

    Combining heat pipes and dedicated outside air creates reliable, energy-efficient, low-maintenance systems....More

Columns

  • Mar. 1, 2012
    article

    You Can’t Win If You Don’t Play

    You can’t win if you don’t play—seven words where the action centers on “win” and “play.” It doesn’t matter if we’re talking sports, the lottery, or an industry awards program. The fact is, everybody wants to be a winner. To win is to separate yourself from the crowd, to be successful, to matter....More

Departments

News & Notes

  • Feb. 14, 2012
    article

    Third Public-Comment Period for Update to LEED Green-Building Program set to Open

    A third public-comment period for a proposed update of the U.S. Green Building Council's (USGBC's) Leadership in Energy and Environmental Design (LEED) green-building certification program will be open March 1-20....More
  • Feb. 21, 2012
    article

    Metraflex Introduces Free Wall-Penetration-Seal App

    The Metraflex Co., the Chicago-based manufacturer of specialty piping products, recently launched a free application for iPhone/iPad and Android that helps users quickly calculate the links required to fill pipe gaps in wall penetrations....More
  • Mar. 1, 2012
    article

    HPAC Engineering Advisor to Talk Commissioning at Carrier Confab

    Noted commissioning authority and longtime HPAC Engineering Editorial Advisory Board member Ron Wilkinson, PE, LEED AP, CPMP, will present “Building Commissioning Quality Assurance—It is all About the People” during Carrier’s 11th Global Engineering Conference (GEC), to be held March 18-20 in Las Vegas. HPAC Engineering recently caught up with Ron to talk about his presentation....More
  • Mar. 1, 2012
    article

    Calendar

    MARCH 18-20 HVAC Excellence National HVACR Educators and Trainers Conference, Las Vegas, HVAC Excellence, http://bit.ly/HVAC_Excellence. MARCH 27-29 Energy Efficiency Global Forum; Orlando, Fla.; Alliance to Save Energy; http://ase.org/event/eeglobal. ......More

Products & Literature

  • Mar. 1, 2012
    article

    New Products

    Intelligent boiler control The RBT-3000 low-water cutoff and fuel economizer is designed to maximize fuel efficiency and provide low-water cutoff protection for hydronic heating systems. The unit’s intelligent controls automatically adjust water ......More
  • Mar. 1, 2012
    article

    Product Spotlight

    Liquid-desiccant system The DuTreat Roof Top (DTRT 5000/30) rooftop air-conditioning and dehumidification system uses a salt-water-based liquid desiccant. The salt water naturally absorbs humidity, cools air, and removes most airborne microorganisms in ......More
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