When a project consists of 430,000 square feet of refrigerated space, conventional wisdom would suggest a cooling system consisting of a large mechanical room with a refrigerant such as ammonia.
But the new International Produce Market in Chicago is going against convention. Instead of a mechanical room, there are more than 100 rooftop condensing units. Instead of ammonia, the refrigerant of choice is R-22.
Steve Easley, owner of S.C. Easley and Associates, a construction consulting firm, and a former professor of building construction and contracting at Purdue University, speaks and writes a lot about the subject of indoor air quality (IAQ). You want answers? Here are a few from Easley to some basic questions on this increasingly important subject.
This is the second installment of a three-part series on mold and its relationship to HVACR systems. In this installment, The News examines what some companies are recommending for the prevention and the remediation of mold.
ISH North America is rapidly becoming the “anchor” for a variety of industry-related events. ISH NA is hosted by Messe Frankfurt, Inc., in cooperation with the American Supply Association (ASA), the Canadian Institute of Plumbing and Heating (CIPH), and the Plumbing-Heating-Cooling Contractors — National Association (PHCC).
Nate and Ace are replacing a 30,000-Btu cooling system. The new system is a 10 SEER. They have removed the refrigerant by following the refrigerant handling requirements of Section 608 of the Clean Air Act. Having completed the component installation, including a new condensing unit, properly sized refrigerant lines, and a matching cooling coil with a TXV, they are preparing to charge the system.
At the 13th annual Energy Efficiency Forum, held at the National Press Club, the theme was “Evolution of the Energy Economy: Ensuring Security and Stability.” The speakers highlighted the need for energy diversity, in efficiency and alternative sources, as well as in production.
In this first installment of a three-part series, The News examines the issues surrounding the certain types of mold and their relationship to HVACR systems. Since Stachybotrys chartarum has garnered the most media attention and has been linked to highly visible stories involving adverse health affects, The News is using this type of mold to exemplify the entire mold testing and remediation story.
“Hate” is maybe too strong; how about “intensely dislike.” Statistics show that 75% of contractors spend over half of their entire marketing budgets in the Yellow Pages. Yet this results in just 13.4% of HVAC sales.
When DST Output decided it needed more space to expand its printing and publishing services for mutual fund companies, it looked in a rather unlikely spot. Instead of choosing an existing building to move into or even vacant land on which to build, DST Output chose to renovate an abandoned railroad roundhouse.
The Partnership for Air-Conditioning, Heating, Refrigeration Accreditation (PAHRA) was introduced over two years ago. The organization aims to set standards by which all HVACR programs can assess themselves. Linn State Technical College’s HVACR program was the first in the nation to align itself with PAHRA’s standards.