Newsline

Make-up air, humidity control keep dual-rink ice arena in play

March 30, 2000
/ Print / Reprints /
ShareMore
/ Text Size+
Imagine you’re a developer of ice skating facilities around the country used by nationally ranked amateur and professional hockey players and figure skaters.

It’s 95°F in the middle of July, and the kids are out of school and would love to keep cool and play hockey at the same time. But the high temperature and humidity are wreaking havoc on your ice surface, condensation and mildew abound, and no one comes to play. What do you do?

If you’re Polar Ice Entertainment, the owner of four skating facilities nationwide, you look for some relief from the summertime blues. Kevin Lahah, an arena operator for five years, knew he needed a solution to these operating troubles.

In order to meet local building codes, ice arenas need to introduce large quantities of outdoor air. This is like leaving the door open to your freezer all day.

“The trick is trying to introduce the proper quantity of outdoor air and still maintain humidity control,” said Lahah.

The newest Polar Ice facility is built at the end of a mall in Grapevine, TX. It has two enclosed NHL-sized rinks connected by some locker rooms and a pro shop. The ice arena has approximately 32,600 sq ft of total ice surface. It is well insulated and of tight construction. The arena uses eight 25-hp refrigeration compressors for the two ice surfaces.

However, the humidity in the arena would run as high as 95% rh if not conditioned, and the refrigeration equipment would have to work overtime to maintain the ice. It is estimated that 15% of the total load on the ice surface is a function of the humidity level. Therefore, high humidity periods would cause energy costs to rise and reduce the quality of the ice.

As would be expected, high humidity levels cause a number of problems. These include fog, condensation, mold and mildew, and even customer discomfort. The only way to combat these issues is to provide the proper amount of dehumidification and make-up air without sacrificing energy consumption.

Taking control

To tackle these problems, the rink operator attended a local trade show where he heard about “Make-up Aire,” a gas-fired desiccant-type energy recovery dehumidifier from Munters DryCool (Selma, TX). This system is a way to introduce make-up air and dehumidify the arena while simultaneously reducing the facility’s energy consumption.

According to the manufacturer, the major advantage of this type of dehumidifier is its ability to go to very low dewpoints. These lower dewpoints are necessary due to the low ambient temperatures experienced in ice rinks, particularly during summer operation.

The system is designed to achieve lower dewpoints because the desiccant removes water in the vapor phase and is not limited by temperature. It is designed to remove moisture continuously without requiring a defrost cycle.

In the end, the owner installed a single, 15,000-cfm, gas-fired Make-up Aire system. The unit utilizes a 92% efficient direct-fired natural gas burner to dry out the desiccant wheel. An energy study projected the rink would save approximately $12,000 a year. The system was sized to handle the outside air and internal latent loads in both rinks to maintain 40% to 50% rh year round.

Testing it out

Before the dehumidifier was turned on it was 43° and 96% rh inside the ice rinks.

“Six hours after the desiccant dehumidifier was turned on, the temperature had risen to 55° and the humidity was lowered to 50% rh,” said Lahah, noting that the dryer had removed 800 to 1,000 lbs of water from the air.

This solved the humidity problems in the building and provided a more comfortable environment while improving the ice quality.

“The internal environment is really comfortable now. Skaters rave about the excellent ice surface. The air quality has improved and even asthma suffers have seen a difference,” said Lahah. Also by lowering the humidity levels in the arena, the rink owner was able to increase refrigeration capacity for ice making.

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