West / Regional Reports

Astute Building Owners and Managers Upgrading Ac Units Now

May 30, 2001
/ Print / Reprints /
ShareMore
/ Text Size+
Bob Trombi, journeyman HVAC technician with Metro Mechanical, Inc. a P.I.P.E. contractor, Prepares an outdated cooling tower for removal at the Phoenix headquarters of Plumbers, Steamfitters, and Refrigeration, Local 469.


Jayson Murdoch, an apprentice with Metro Mechanical, Inc. unveils the new chiller for the Phoenix office of Plumbers, Steamfitters, and Refrigeration, Local 469. The new energy and cost-efficient chiller is replacing a former 20-year-old cooling system
Owners and managers of large buildings, apartments, and condominium complexes, as well as most school districts, are upgrading their commercial air conditioning systems to make them more efficient to avoid energy crisis problems this summer and in the future.

The upgraded cooling systems are a conversion from Freon application to water chilled cooling systems. According to Carl Triphahn, executive director of P.I.P.E. (The Piping Industry Progress and Education Trust Fund), the economical advantages and energy efficiency of a water chilled cooling system can be significant, especially in a market like Phoenix, where there is such a high demand for energy throughout the summer and fall months.

"P.I.P.E. believes it is important for the managers and owners of 20-to-30-year-old commercial and large residential buildings in the Phoenix area to evaluate the buildings' current air conditioning systems," Triphahn said. "Upgading the old freon systems prevents the types of energy problems we are seeing in other parts of the country, particularly California."

Rick Wieting, service manager for W.D. Manor Mechanical Contractors, Inc., a P.I.P.E. contractor, concurred.

"Without some concerns on the part of the 'high energy user,' even though they are willing to pay the premium price, Arizona will end up short of power," Wieting explained. "Especially without the construction of new power generating stations."

Ian T. Hadden, a Phoenix-based sales engineer for York International Corporation, said manufactures have taken the need for more energy-efficient products into consideration for new models and designs.

"The technology we have available to us today is far superior to what we have had in the past," Hadden said. "Over the last 20 years, we have gotten much smarter on how and why an hvac system operates the way it does. That has resulted in at least a 20 percent increase in efficiency."

Manufacturers of chillers have begun using different refrigerants for higher performance, along with the use of variable speed drives for higher efficiency load control, rather than limiting the refrigerant cycle. This adjustment in the manufacturers' approach will make installations of new systems in Phoenix and across the country, more energy efficient and environmentally friendly.

Lou Jennings, vice president of Metro Mechanical, a P.I.P.E. contractor, said it is important for building owners to realize that these hvac systems are generally complex and require highly trained craftspeople to ensure that any retrofit upgrade work is done correctly.

He said each HVAC system upgrade must be well thought-out and customized to ensure maximum efficiency, reliability and long-range environmental safety.

"It's not like a delivery man dropping off a new reftigerator," Jennings said. "We have to learn about the usage of the building, evaluate the overall condition of the existing system, and then make retrofit suggestions accordingly.

"As an example, the chiller is certainly central to the hvac system, but there are many other system components which may greatly impact the performance. For instance, variable water pumping is a good way to realize energy savings," Jennings continued. "Also, a plate and frame heat exchanger allows for nearly 'free cooling' during mild and winter seasons. Top-notch energy management control systems are available to coordinate all of the system events and even let the owner or contractor know when something is not working properly. These types of considerations should be addressed during the upgade-project design. At Metro Mechanical, we ask many questions, and then listen closely to the answers."

Jennings also said the typical industrial chiller will have a 15-to-20-year lifespan if it is cared for properly.

"It is imperative to have qualified craftspeople service and maintain these industrial cooling svstems," Jennings explained. "There is too much at stake for most companies to have air conditioning problems that cause interruptions in their businesses."

U.A. Local 469, the plumbers, pipefitters, and steamfitters union, is one such business that has recognized the need to upgrade its air conditioning system.

"About 15 years ago, Local 469 saw the advantages and modified its air conditioning system, going from direct expansion to a chilled water system," Mike Van Kirk, Metro Mechanical's operations and service manager, said. "With the chilled water system currently in use at the union hall approaching the end of its lifespan, the union has decided to upgrade to a new, energy efficient chiller. The union is also installing a more energy efficient cooling tower, and a microprocessor-based energy management system to minor and modify the building's energy usage."

Van Kirk said changes like this, many of which are currently underway at buildings ranging from hospitals and churches to warehouses, manufacturing, and aerospace facilities, will hopefully have a positive impact on our energy supply in the months ahead.



A crane carefully lifts a new chiller into the basement at the Phoenix office of Plumbers, Steamfitters and Refrigeration, Local 469, while Bob Trombi guides the machinery.
The Piping Industry Progress and Education Fund is an organization committed to upholding the highest standards of performance in the plumbing and pipefitting industry. Established in 1954, P.I.P.E. assists its members and their unionized P.I.P.E trades in providing the highest quality construction products in Arizona through performance, education, informational materials and promotion of ethical standards for business conduct. There are more than I 00 members throughout Arizona.

Publication date: 06/18/2001

Did you enjoy this article? Click here to subscribe to The NEWS Magazine

You must login or register in order to post a comment.

Multimedia

Videos

Image Galleries

2014 MCAA Annual Convention

Scenes from the 2014 MCAA Annual Convention in Scottsdale, Ariz.

Podcasts

NEWSmakers: Julian Scadden

Training is an ongoing process. Julian will discuss how you can generate maximum return on time and energy invested training by following a three part process. Listen to this podcast to get expert tips on training, tracking and follow up. 

More Podcasts

ACHRNEWS

NEWS 04-21-14 cover

2014 April 21

Check out the weekly edition of The NEWS today!

Table Of Contents Subscribe

SERVICE CALLS POLL

Which statement on service calls best applies to your business?
View Results Poll Archive

HVACR INDUSTRY STORE

plumbing-hvac.gif
2014 National Plumbing & HVAC Estimator

Every plumbing and HVAC estimator can use the cost estimates in this practical manual!

More Products

Clear Seas Research

 

Clear Seas ResearchWith access to over one million professionals and more than 60 industry-specific publications, Clear Seas Research offers relevant insights from those who know your industry best. Let us customize a market research solution that exceeds your marketing goals.

DON'T MISS A THING

Magazine image
 
Register today for complete access to ACHRNews.com. Get full access to the latest features, Extra Edition, and more.

STAY CONNECTED

facebook icontwitter iconyoutube iconLinkedIn i con