HPAC Engineering's Most Popular Articles
HPAC Engineering's Top 10 articles for the past three months.
While there has been some criticism of the LEED Accredited Professional (LEED AP) credentialing process, it remains a valuable professional designation and one that is likely to grow more valuable in the future. That's because the LEED governing body, the U.S. Green Building Council (USGBC), has done a good job marketing itself and the LEED process. Interest in green design continues to grow, as does the demand for LEED AP participation in sustainable projects....
Like all materials, pipe experiences dimensional changes as a result of changes in temperature, expanding when heated and contracting when cooled. The key to accommodating thermal expansion and contraction in a piping system is to allow predictable and controlled piping-system movement....
Much has been written about controlling the minimum-outside-air quantity in variable-air-volume (VAV) air-handling systems. However, instead of debating the merits of various control methods, this article will discuss how to apply the mixed-air-plenum pressure method and why it works. ...
A boiler can consume several times its initial cost in fuel in a year. That, coupled with escalating utility rates and an increasing focus on energy and the environment, has engineers and contractors turning to an ever-expanding array of super- efficient condensing hot-water boilers....
Preventing loss of life, property damage, and business interruptions...
In commercial and institutional buildings, cooling systems are not exactly top of mind when it comes to conservation and the use of technologies. Yet...
Accounting for about 40 percent of energy consumption in the United States and contributing more carbon dioxide to the atmosphere than entire nations,...
Though vital to maintaining good indoor-air quality, outdoor air can be expensive to temper and, if not conditioned properly, cause humidity problems...
Commercial-building-owner sentiment regarding ground-source-heat-pump (GSHP) systems ranges from, "They are the only system we want in our buildings," to, "We will never do one of those again." Installation costs can range from $12 per square foot to more than $50 per square foot, while operating costs and occupant comfort also can vary across the spectrum. However, successful applications can be found in a wide variety of climates and building types....
Editor's note: The following article is based on the session Sustainable Design and Energy Retrofits: A Collaborative Digital Workflow, presented by the...
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