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Source: Today's A/C & Refrigeration News, Published May 2011, Page 13, By Richard Westlund
When Ted Michaelson received a call from a commercial laundry in South Florida last summer, he realized a custom air conditioning system would be necessary to handle the load. “The existing 69-ton AC system was inadequate,” said Michaelson, president of AMI Air Conditioning and Mechanical, Inc. in Delray Beach. “We needed to come up with a system that could utilize the existing roof curbs, avoid any new penetrations through the roof, and get enough capacity into the building to offset the heat load.”
With its driers, ironers and other equipment, the 35,000-square-foot Riviera Beach laundry handles about 45,000 pounds of laundry each day for hotels and resorts in the Palm Beach County marketplace. “Because of that internal heat, the load on the building doesn’t change much from winter to summer,” added Michaelson. “That’s unusual for Florida, where peak loads usually occur in the hot July-August time period.”
The building’s old AC system consisted of two 12.5-ton and two 17-ton units for a total of 69 tons. “No one makes packaged units that fit those curbs over 20 tons,” Michaelson said. “So we looked for a custom solution.”
Miami-based Coldflow , now back in the hands of its original ownership, built four 45-ton units designed to fit on the existing roof curbs. The ultra-high-efficiency custom Coldflow system included variable frequency drives to reduce operating costs and oversize coils to compensate for lint build-up in the laundry’s air.
After Coldflow delivered the new units ahead of schedule, Michaelson’s team removed the old system, and installed the new units in stainless steel cabinets, and put in a 200-ton cooling tower, control system and 640 feet of steel piping. The project was completed quickly and smoothly last October.
“It was a quick and easy installation,” Michaelson said. “The laundry finally has an adequate cooling system, and the owner has seen a big improvement in his electric bills thanks to the ultra high-efficiency system.”
Founded in 1976, AMI Air Conditioning and Mechanical serves clients throughout Florida. The family-owned company is led by Michaelson and his sons Mark, vice president, and David, secretary/treasurer of the company.
“Achieving improvements in energy efficiency in existing buildings provides significant rewards in operating savings, conservation of resources and improvements in the environment,” Rita Harrold, IES director of technology, said. “The standard addresses the necessary guidance for a variety of users to develop action plans for their specific needs. Making the standard available for an advisory public review is an important opportunity for contributory comments that will add value to the final document.”
The revised standard provides comprehensive and detailed descriptions of the processes and procedures for the energy efficiency improvements of existing residential and commercial buildings in order to achieve greater energy efficiency.
“Cities like New York, which are constrained in their development due to infrastructure limitations, can use this tool to renovate their existing building stock, freeing up energy for new developments,” ASHRAE Presidential Member Gordon Holness, whose presidential theme focused on energy in existing buildings, said. “Since the standard sets specific energy targets based on building type and climate zone, it can also be used by state and federal agencies and by utility companies as a means of validating building efficiency improvements as a result of tax rebate and incentive programs. Given that 75 to 80 percent of all buildings that will exist in the year 2030, exist today, this rewritten standard gives us a vital resource to fulfill our sustainability goals. President Obama recently announced a series of tax and regulatory changes with a collective goal for a 20 percent reduction in energy use in commercial buildings by the year 2020. That can only be achieved by addressing our existing building stock.”
The standard addresses major and minor modifications for both residential and commercial buildings, single and multiple activity buildings with variable occupancy periods and identifies an energy target for 53 building types in 16 climate zones/sub-zones.
The revised standard also identifies energy efficiency requirements for buildings without energy targets – mostly industrial, agricultural, data centers and special laboratories – and provides multiple levels of compliance.
Recognizing that the type... more
In an effort to sharpen their focus on the future and to correct some customer service issues caused by their purchaser of the Coldflow line of equipment the brand name is back in the hands of the original owners. The management, has re-addressed their efforts and is in the process of restoring Cold flow’s name to its traditional leadership position in the market. Coldflow had long been an innovator in the water source market and with and the taking back of their name, the recent advancements in proprietary technologies the management looks confidently to the future for orderly and controlled growth in a direction that can only benefit the brand and the industry. Coldflow prides itself on the ability to make innovative changes to their products manufacturing processes. According to the Coldflow Management meeting the ever changing needs of our customers is our life blood and we will continue in that direction. Contractors accustomed to doing business with Coldflow have already seen changes in the ever increasing quality and state of the art technology that have become a hallmark... more
Publisher: Nick Willocks Today's A/C and Refrigeration News. Volume 22 / Number 10 May 2011