Cooling Towers Pr 5f4840cfe3926

It’s Cooler on the Jersey Shore

Aug. 27, 2020
CASE STUDY: New hotel HVAC cooling tower reduces energy use, protects guests with anti-microbial properties that greatly reduce chances of bacterial growth.

In New Jersey, it is a rite of passage that each summer you pack up and head for the shore. For those looking for a luxury retreat at the only full-service spot overlooking the Atlantic in Ocean City, staying at the Flanders Hotel this summer was even cooler.

The hotel recently completed more than $10 million in renovations, revamping almost every portion of the hotel and adding 21 new suites, including five new million-dollar penthouses on the roof.

However, for the Flanders, this expansion created major issues for the building’s HVAC system’s cooling tower which was now undersized and at the end of its service life. The old metal-clad tower struggled to provide the needed cooling to allow the air conditioning system to fully cool the 117 luxury multi-room suites.

“It was a nightmare,” says Peter Voudouris, Director of Operations at the Flanders Hotel. “We were getting complaints about the lack of A/C in many of the rooms, and some of those guests were spending up to $1,400 a night for the penthouses.”

Ensuring the comfort of its guests, which can exceed 100,000 annually, became a top priority for the hotel. As part of that, Voudouris hired a mechanical engineering firm to help find a replacement for the metal tower which had become very maintenance-intensive and developed a number of leaks after years of sitting in the corrosive salt air.

“They suggested we replace the metal tower with another, larger metal tower, but I felt very strongly that it would only create the same problems for us,” says Voudouris.

Making matters even worse was that in order to upgrade to the larger metal tower, the engineering firm was going to require the hotel to re-pipe almost the entire hotel, going from 4-inches up to 6.

“You’re talking about adding about $450K onto the project. It would have been cost-prohibitive for us,” says Voudouris. “I just felt there had to be another way.”

With a half million-dollar incentive, Voudouris began researching all possible options and came across a metal tower alternative constructed out of high-density polyethylene (HDPE). Pioneered by Delta Cooling Towers in the 1970’s, the engineered plastic towers are impervious to corrosive environments and require fewer expensive water treatment chemicals, as well as less downtime for repair or replacement.

Voudouris contacted Marty Previtera, a regional manager at Delta Cooling, who after reviewing the specs, was convinced that the hotel could use the HDPE towers and not have to re-pipe the entire building.

“We worked with the hotel and its engineering firm to come up with a novel solution that would allow the return temperatures from the cooling towers to fall within the allotted temperature range and, therefore, not have to re-pipe the building,” says Previtera.

“I don’t think I would have ever gotten this done without him,” adds Voudouris.

Checking-in: Safety

While helping the hotel reap huge savings was a significant factor, there were several additional issues that Voudouris’ board of directors were concerned about when it came to the cooling towers. One of the other largest factors was guest safety.

While the area had never had an outbreak of Legionnaires’ Disease, the topic had become a major topic of concern for the local hotel and motel association to which Voudouris belongs. Legionnaires’ Disease is caused by exposure to legionella bacteria which, along with other microbial health threats, often proliferate in cooling towers. 

“Our old tower was a breeding ground for pathogens and other microorganisms, and we were very worried that it could cause a health threat to both the guests and our staff,” says Voudouris.

A major benefit to HDPE is that unlike metal, plastic can be made with special antimicrobial resins that are fully compounded into the base cooling tower structural material, as well as the casing, fill and drift eliminator – effectively inhibiting harmful microbial growth. Also, Delta had recently developed a new antimicrobial cooling tower option that minimizes the risks of legionella and other health hazards that frequently thrive in such systems.

“Keeping our guests safe and reducing our liability risk was a major concern,” add Voudouris. “And the city was actually very pleased that the tower would help prevent legionnaires, and I believe that helped with my permits.”

Checking-out: Power Consumption

Another priority for the Flanders Hotel board was cutting into the facility’s overall energy bills, which were high and continuing to go up. That was due in part to the fact that the old cooling tower had been inefficient, and because it was undersized, it was necessary to operate it at maximum capacity, 24 hours a day, seven days a week.

“Not only does the new tower design maximize cooling, but its direct-drive, air-moving system, which includes a VFD (variable-frequency drive) fan motor, provides significant cost savings on electricity,” adds Voudouris. “After having the tower up for almost a full year, I can tell you right now, our energy bills are way less.”

Specifically, the hotel selected Delta’s Paragon induced draft, counter-flow, cooling tower design, with 250 cooling tons capacity. The corrosion-proof shell also comes with a 20-year warranty, and because the plastic towers  are factory-assembled, they can be installed in only one to two days, instead of weeks or more, further reducing total expenses.

In the end, the Flanders had its new cooling tower installed just before Memorial Day 2019. And according to Voudouris, for the first time in a long time, all the rooms, from the ground floor to the penthouses, were very cool.

“The bottom line is our guests immediately could tell a difference,” concludes Voudouris. “They let us know how much better it was, and just how great their stay was. Honestly, I think it is going to impact us in a big way.” 

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Based in Houston TX, the author is a freelance writer and President and CEO of Rankin PR. Contact him at [email protected].