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During the replacement process, a number of different actuators were examined and after careful consideration the decision was made to replace the failing units with Belimo’s EFX120-S N4 spring return actuators. In addition to having a NEMA-4 rating, Belimo’s EF actuators offered higher torque (270 in-lbs) in a single direct-coupled unit, and because of this, only 150 actuators were required to do the work that the 250 MS41xx units originally did (one EF unit can effectively operate a 66 sq ft damper). The cost for the more robust EF actuators was almost equal to the cost of ordering 250 M-Series actuators.
Hillsdale’s Energy Department implemented an energy management program in an effort to reduce the costs associated with providing utility services to the campus. The primary goal of the plan was to help the college absorb potential utility rate hikes while avoiding the need to increase its utility budget as both newly constructed and renovated facilities were completed and became occupied. After roughly a year and a half of trying to achieve savings, the college’s Energy Department examined the operation of their HVAC systems and related mechanical equipment to identify areas where more substantial savings could be achieved through both system optimization and various infrastructural improvements.
Low Delta T is a costly problem in many large-scale facilities, and on sprawling university campuses with central chilled water plants, it can often be a major source of inefficiency. Low Delta T occurs when the supply and return chilled water temperature across an HVAC system is less than the chiller’s design calls for. Oversized, damaged, fouled, or degraded air-handling coils are often the main cause, however, poor system balance and/or improperly installed and controlled air handlers can also contribute to it as well. Low Delta T can often result in the need for additional chilling units even though cooling load hasn’t increased, and as a result, there is significant opportunity to take advantage of savings by utilizing products that protect against it. This was evident on two separate structures at the University of New Brunswick in Fredericton, Canada, where Belimo Energy Valves helped achieve real-world savings through optimization of chiller operations.
According to this sports entertainment complex, its 18 building main campus is the company’s “mother ship,” employing close to 4,000 people. It’s the job of these employees to keep this 24/7 sports channel running. The buildings on campus are also an important factor. They need the most efficient and reliable mechanical systems in order for the show to go on. That is why Belimo chose this facility to install its Energy Valves.
The goal of the project was to employ the Energy Valves so that the facility engineers can collect data from the valve and show for a fact that delta T readings are where they should be, coils are sized correctly, working properly, and working efficiently.
The University of Miami medical campus saves thousands of dollars and increased plant capacity with the Belimo Energy Valve retrofit. The University of Miami’s Leonard M. Miller School of Medicine says it prides itself on bringing medical research from “bench to bedside,” meaning doctors are providing patients in Southern Florida with the latest cutting-edge developments in medical care. On its sprawling campus and in its state-of-the-art buildings, doctors and researchers are unlocking the secrets to not only infectious diseases, but the future of stem cells and genetics.
Low Delta-T Syndrome is a common (and costly) problem in many large facilities, especially on sprawling campuses with central chilled water plants. This was and still is the case at The Massachusetts Institute of Technology (MIT). But the problem isn’t as bad as it use to be. Facility engineers within the University’s Sustainability and Utility Planning are now optimistic that it will continue to improve. This is in thanks to new valve technology from Belimo that was applied to MIT’s Charles Hayden Library as a beta test for a new Belimo product – the Belimo Energy Valve™. The results are promising for any large facility currently battling Low Delta-T Syndrome.
Recently released a new white paper by Gregor P. Henze the Department of Civil, Environmental and Architectural Engineering of the University of Colorado Boulder located in Boulder, Colorado along
Improving Campus Chilled Water Systems with Intelligent Control Valves: A Field Study. This white paper details a field study conducted on two university campuses in Massachusetts and Colorado during the cooling season of 2011. The purpose of this experimental study was to alleviate ΔΤ degradation problems on both campuses through the use of intelligent pressure-independent control valves, and to quantify the improvements achieved. The Massachusetts field results revealed that the intelligent control valves when coupled with a ΔΤ management strategy have allowed the campus to serve additional cooling load on its campus with the same distribution and central plant system.
The Belimo products “Energy Valve” and the room controller “CR24-B1” were the protagonists of a Macedonian pilot project in Skopje for the determination of the energy efficiency of buildings. The experimental set-up at the Institute of Forestry was able to demonstrate that, with the implementation of meaningful renovation measures, the consumption of primary energy could be reduced by 20 percent by the year 2020 in comparison with the expectations projected for 2007 — as outlined by the 2012/27/EU Directive. Thanks to the Belimo Energy Valve also the current energy consumption values and the optimization potential of the system are known at all times.
The Challenger site in the Parisian suburb of Guyancourt is to date unique in the world with respect to sustainable building renovation. In 2014, the French construction group Bouygues will have renovated all of its headquarter buildings, which was built in 1988 and has a total area of 67,000 m², in accordance with the most stringent of environmental and energy efficiency specifications. The consumption of primary energy and water will be reduced thereby to 10% and 40%, respectively, of their original values.
Roger Bennett was looking for an opportunity to showcase pressure independent control valve technology to his clients. He found it when his firm, WayPoint Systems, was awarded the contract to provide a complete Direct Digital Control (DDC) system retrofit for a high rise property in midtown Atlanta, known as 1100 Peachtree. The 582,000 square-foot, 28-story class-A office building is managed by Carter and Associates.
Variable primary chilled water systems can be a cost effective alternative to standard primary/secondary systems and are becoming more commonplace for that reason. At the same time, these systems are often more challenging to control. In designing a variable primary system for the new Department of Transportation (DOT) headquarters in Washington D.C., the design firm of DMJM in Arlington, Virginia, met this challenge with pressure independent control valves.
Pressure independent valve technology played a key role in a major Utility Energy Service Contract (UESC)Project at Eglin Air Force Base, Florida. The project, completed in late 2006, included the conversion of a chilled water plant, known as Building 42, to variable flow. The conversion helped the plant and the buildings that it serves meet the requirements outlined in the Energy Policy Act of 2005 and has also resulted in significant energy savings. The installation of 62 Belimo pressure independent characterized control valves (PICCV) helped pave the way for a smooth transition to variable flow, ensuring that the base will continue to enjoy worry-free energy savings for years to come.
Hartford, Connecticut’s most iconic building also may be one of its most difficult to heat and cool. The corporate headquarters of The Phoenix Companies, Inc. at One American Row in downtown Hartford is a true architectural landmark. The 13-story building, designed by famed twentieth-century architect Max Abramovitz and completed in 1963, is the first New England office building to be both LEED certified and on the National Register of Historic Places. However, the building’s ship-like profile and glass curtain walls cause tremendous solar gain, creating ongoing heating and cooling challenges for Phoenix.
The University of North Florida (UNF) chilled water plant gives new meaning to the term “Florida orange.” At first glance it looks as though the chilled and condenser water piping were laden with large, orange-colored tropical fruit. But the assortment of brightly colored Belimo control valves is in place throughout the plant (and campus) to save the university energy and labor. It’s part of a carefully orchestrated control strategy, developed and implemented by the Campus, the engineering community, and Facility Automation Solutions in Jacksonville, Florida that gives plant personnel computerized remote control over chilled water and cooling tower operation.
It was right there in black and white.
Paraphrased, the guideline stated that pump and piping systems shall be arranged in a reverse return configuration.
The standard is part of the GSA’s (US General Service Administration) design guide, known as the PBS-P100, and serves as the guideline for all US governmental buildings. However to all rules, there are at least one or two exceptions. Such was the case with the new US Census Bureau headquarters located in Suitland, Maryland. The 8-story, 1.5 million sq. ft. facility, scheduled to be completed in October 2006, simply was not a good candidate for the use of reverse return for all systems.
One teacher threatened to wear a bathing suit to class (in mid-winter) if the overheating problem at the Lincoln Hall Middle School in Lincolnwood, Illinois wasn’t soon corrected. Clearly, it’s hard enough to make a 13-year old concentrate; and even though Jim Caldwell, Director of Buildings & Grounds was pretty sure this was an idle (and good-humored) threat, the school was ready to find a control solution for the unit ventilators that were overheating several classrooms.
Shell Point Retirement Community in Fort Myers, FL, is an extraordinary property. With over 400 acres and nearly 2000 residents, it is Florida’s largest life care retirement community, combining all the services of a comprehensive staged elder care facility and the amenities of an all-inclusive resort. Also extraordinary is the fact that this sprawling property, which includes a 75-acre island and a wide assortment of medical, recreational, and living facilities, is served almost entirely by one central energy plant. The efficient and seamless delivery of heating and cooling to the outlying buildings is, in no small part, thanks to the nearly 1500 Belimo Pressure Independent Control Valves (PICCV).
The purpose of this report is to summarize the findings of the independent testing done by the Iowa Energy Center on Belimo’s Pressure Independent Characterized Control Valve (PICCV). The overall objective of the study was to evaluate the performance of the PICCV against conventional globe control valves for terminal reheat and chilled water cooling coil applications in a commercial office building. The facts are condensed into a user friendly format that will enable you to analyze and compare the performance of both valves on a heating and cooling system. All charts and findings come directly from the full report.
Habitat for Humanity in Riverside, CA has raised the bar on energy efficient residential design with a unique system that uses one heat source—a tankless boiler—for both domestic hot water and radiant floor heating. Peter “Rugg” Lehrbass, a Facilities & Planning Services engineer at California Baptist University was called upon and volunteered his design services for the Habitat home, which is on track to become Habitat’s first LEED platinum certified home.
Sonoma State University had high aspirations for converting the original Ruben Salazar library into a multi-use facility and was willing to go the distance to achieve their goal without a large increase in campus demand for peak power. Be assured, a project like this demands a lot of careful consideration, from selection of the 106 kW solar photovoltaic system to the valves and actuators that control water flow and damper operation in over 100 zones.
When the mechanical contracting group of The Trane Company won the bid from McClier Corporation to do the mechanical engineering for the new, state-of-the-art New York Post printing facility, its control design team chose Belimo as its supplier of actuators and valves. The decision was based on Belimo’s reputation for reliable products and timely, all-inclusive customer service.
As Director of Engineering for the Boston Marriott Cambridge, Robert Vass knows that each mechanical decision he makes for the hotel has 431 opportunities to fail. That’s the number of guestrooms at the hotel, located in the historic Kendall Square district of Boston. So when it came to replacing the zone valves in the fan coil units in all the guestrooms during a major renovation, reliability was his first priority.
The Oklahoma City VA hospital was the very first project to use the new generation actuators and linkages. The fact that ES2 was not only willing to wait for the product, but be the first to use it, is indicative of their confidence in Belimo technology and innovations. Neither Kinser nor Woods had any reservations about being the first to use the product. “Belimo has always given us awesome products and support. The actuators always perform as expected. Belimo is constantly looking for ways to improve their products. It’s always been a great product for our customers,” said Kinser.
“Replacing the actuators was a matter of taking the old one off and putting the new one on. It took about one hour per valve and the system was up and running again,” said Mr. Beauton. This means less down time and less repair costs.
Andy Cummings of Southland Industries has suffered through his share of cumbersome damper actuator installs. With over 30 years of experience in the sheet metal industry, he knows that the process is not only time consuming, it can yield disappointing results if the connections are in any way unstable. Damper blades can become twisted or bent, linkages can bend or even break, etc. Meanwhile, the last thing a busy design, build and maintenance firm like Southland Industries wants is to revisit a failed installation that was already labor intensive to begin with!
Those seeking comfort will find it at Assisi Heights in Rochester, Minnesota. Indoor air comfort that is, now that a comprehensive renovation of the facilities HVAC mechanical system is complete. For many years, that wasn’t the case.
Until recently, the Sisters of St. Francis of Rochester, along with others who lived, worked, and taught at the historical convent, did so without air conditioning and a very outdated steam heating system.