Extra Edition / Web Exclusive

Passive Dehumidification Yields Significant Energy Savings, Fast Payback

March 5, 2012
/ Print / Reprints /
ShareMore
/ Text Size+
GAINESVILLE, Fla. — Heat Pipe Technology Inc. (HPT), a division of MiTek, a Berkshire Hathaway company, announced that two recent commercial installations of the company’s passive dehumidification systems have yielded quick payback, carbon reduction, and ongoing energy savings. Both HPT applications were for manufacturers that require very-low-humidity environments for pharmaceutical production (GlaxoSmithKline) and for the manufacture of high-quality optical lenses.

In the case of GlaxoSmithKline, HPT’s passive energy recovery and dehumidification systems were installed on an HVAC system serving a 225,000-square-foot plant with a 1,000-ton chilled water loop and a 400-ton chiller. A processing area within the plant requires a maximum relative humidity of 50 percent at 72°F. To maintain that humidity level, GlaxoSmithKline must extract an extraordinary amount of moisture from the ambient air, which was initially accomplished by lowering the temperature of the chiller loop to a setpoint of 39°. Additional dehumidification was obtained by overcooling the supply air and then reheating it, a very energy-intensive process. With Heat Pipe Technology, GlaxoSmithKline was able to raise the chiller loop setpoint, saving the company $26,000 per year in energy costs. The direct CO2 reduction is estimated at 65 metric tonnes, per year, with direct and indirect CO2 reduction of 164 metric tonnes. GlaxoSmithKline estimated that direct payback of the Heat Pipe Technology system was just 1.6 years.

In the case of the optical lens maker, the manufacturing process required an extraordinarily low 40 percent relative humidity. With the HPT installation, the company was able to reduce its chilled water requirements by 11 tonnes, at a savings of $8,000 per year. The company also saw a “reheat phase” energy reduction of 15 percent, for a $20,000 per year savings. The combined $28,000 savings is enough to pay back the Heat Pipe Technology installation within one year, to say nothing of ongoing savings of $28,000 per year.

“Heat pipe technology can bring dramatic savings to a wide range of HVAC systems, not just to commercial manufacturing,” said HPT’s senior vice president of sales and marketing, Mazen Awad. “If you suspect you are spending too much on energy to condition the air in your building or plant, Heat Pipe Technology has energy modeling software that can illustrate our potential savings, so you can examine a heat pipe implementation virtually with a high degree of confidence for its success.”

For more information, visit www.heatpipe.com.

Publication date: 03/05/2012

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 Energy Efficiency Forum

Highlights from the 25th annual Energy Efficiency Forum in Washington, D.C.

Podcasts

NEWSMakers: Mark Satterfield

Mark Satterfield, founder and CEO of Gentle Rain Marketing Inc. and author of “The One Week Marketing Plan” talks about his book and the importance of HVAC blogging. Posted on Sept. 19.

More Podcasts

ACHRNEWS

NEWS 09-15-14 cover

2014 September 15

Check out the weekly edition of The NEWS today!

Table Of Contents Subscribe

Venting R-22

The NEWS reported that a man received prison time for venting R-22. Should EPA step up enforcement?
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