Nicor Rebate Program helping businesses save

From left to right: DRF’s Scott Schnurr, Dominican University president Donna M. Carroll, and Nicor Gas president Beth Reese pose with the check Dominican University received through participating in the Nicor Gas Business Custom Incentive Program.

 
Through participating in the Nicor Gas Energy Efficiency Program, Dominican University was given the opportunity to upgrade existing heating equipment in its facilities, and save significantly in the process.

Developed to offer large businesses the opportunities to improve the energy efficiency of their facilities and save money, Dominican participated in the Nicor Gas Business Custom Incentive Program, which provides financial incentives for the installation of high-efficiency equipment not covered by the Nicor Gas Energy Efficiency Program’s Business Rebate Program. Through the program, businesses can receive up to $500,000 on their gas-savings projects per year.

According to Nicor, incentives are paid based on energy savings beyond baseline energy performances, such as state or federal codes and standards, industry-accepted performance standards, or other baseline energy performance standards as determined by the Nicor Business Custom Incentive Program.

The current cycle of the program is available for projects installed from June 1, 2012 through May 31, 2014, or until funds are depleted. Per Nicor requirements, post-installation inspections must be conducted and final applications must be submitted to the program by June 30, 2014. Businesses seeking to participate in the program must attain pre-approval in order to become eligible.

Detailed information regarding the program can be found in the Nicor Gas Business Custom Incentive Program handbook.

Dominican began working with DRF Trusted Property Solutions of Plainfield, Ill. in 2010 when DRF observed a large amount of gas being used during the summer months. After developing an initial project design that did not qualify for the Nicor Gas Business Custom Incentive Program, nor provide the desired financial benefits, DRF turned to Metropolitan Industries to help provide a custom solution.

The final project design included three individual point of use systems customized to handle specified heating demands.

Metropolitan HVAC salesperson Matt Brickey praised the program’s ability to assist businesses seeking to conduct retro-fit upgrades progress in an expedited fashion.

“In the case of Dominican University, this program not only helped cover some of the costs of the custom equipment and installation, the gas savings realized will continue to give back for years to come,” said Brickey. “Because of the financial benefits the rebate program offers, it can help prospective customers who may be facing budget constraints get projects moving in the right direction.”

For complete information regarding this project, please visit The Chief Engineer, which profiled the project in its December issue.

For information regarding our custom HVAC solutions and how you may be eligible to save through the Nicor Gas Business Custom Incentive Program, please contact a Metropolitan representative at (800) 323-1665 or visit www.metropolitanind.com.

Hotel Employs Variable Speed Controls to Reduce Energy Demands

The Wyndham Hotel of Lisle, Ill. is located just outside of Chicago and includes 242 rooms spread across eight floors.

 
At Metropolitan Industries, we have the capability to bring the most up to date, energy efficient pump system to your commercial facility.

Whether you require a retrofit substitution of a previous design or an entirely different pump system in general, Metropolitan has the experience, adaptability, and customer service to design and service the most complex commercial projects.

A premier example of our commitment to delivering this type of system is demonstrated by the work done at the Wyndham Hotel of Lisle, Ill.

Working with a constant speed system that was over 10 years old, the hotel turned to Metropolitan Industries to deliver a solution that would save in energy costs.

“The previous system the hotel was using was a constant speed triplex system utilizing two large pumps and one small pump,” said Metropolitan Salesperson Mike Ponx. “With this configuration, the pumps would run even during the lowest demand periods. This type of system is quite wasteful from an energy consumption standpoint and we replaced it with a system that is more energy efficient.”

Metropolitan replaced the existing system with a Metro-Varipac System 2100 Triplex Variable Speed Pump System designed to provide a flow rate of 600 GPM at a constant discharge pressure of 90 PSI. A total of three pumps were supplied, each designed to perform at 200 GPM at 115’ TDH. Each pump motor is rated at 15 HP, 3500 RPM, 60 Hz, 460 volt and three phase.

Metropolitan’s Triplex Variable Speed Pump System will not only save the Wyndham Hotel funds in energy savings, it also freed up space for the hotel to utilize differently.

 
Metropolitan’s Metro-Varipac systems are available with options including, but not limited to, touch screen control, stainless steel piping and hydropnuematic tanks.

The smart pump technology incorporated by Metropolitan extends the life of the pump system. The compact packaged design allows for easy maintenance and gives customers the ability to place systems virtually anywhere. Variable speed controls can save customers thousands in energy savings and can virtually pay for the entire system over time.

“The use of variable frequency drives ensures the pumps are not running at full capacity during low flow periods,” said Ponx. “This is when energy savings are maximized.”

The compact design of the new triplex system not only allows for easier maintenance, but also saved a great deal of space for the hotel.

“The previous configuration the hotel was using had actually taken up two rooms,” said Ponx. “By removing an old, out of commission water softener and incorporating the compact design of the new triplex booster system, they only needed to reserve one room for the new system, allowing them to use the additional space for whatever they please.”

With the installation of the new variable speed booster system, the hotel can expect an energy reduction of 30% to 40% in domestic water system operation. For more information, please contact Mike Ponx at 815-886-9200, etc. 265 or sales@metropolitanind.com.

Metropolitan Goes Back To School

In its distinctive role among the many institutions of learning in America, Iowa Wesleyan College adheres to the ideals of its founding vision of social justice and human welfare on the local and international level by seeking to decrease its carbon footprint. In an attempt to bring a cleaner, greener and a more cost efficient heating system to their school, Iowa Wesleyan, in conjunction with Energy Systems Group, decided to replace their existing, centralized hydronic heating system with several more efficient, complete packaged boiler and primary piping pump systems from Metropolitan Industries.

ESG designed a system so that each building’s heating system would have equipment pre-assembled and manufactured for ease of installation. ESG decided Metropolitan Industries, the leading manufacturer of complete boiler and primary piping pump systems, was the right supplier for equipment development and construction. The campus upgrades also included additional geothermal heating/cooling facilities.

“After a few discussions about the design, we decided to provide high-efficiency, pre-packaged hybrid boiler systems assembled on prefabricated skids with the associated primary piping and pumps,” said Metropolitan’s HVAC Sales Manager Matt Brickey. “This type of design would allow for ease of installation by the contractor and reduce installation time dramatically. We realized moving the prefabricated system through the tight hallways and doorways posed a challenge, so the system was designed so that it could be manufactured in a way that split the skid in three different spots allowing for easier moving and maneuvering around tight spaces.”

The custom designed and engineered boiler systems were installed in five campus buildings: The McKibbin Dormitory, Student Union, Science Hall, Campus Library and the newly-renovated Chapel. In the McKibbin Dormitory and Student Union, hybrid boiler systems with heat exchangers were also packaged on the systems to satisfy the domestic hot water load.

High efficiency air separators manufactured by Spirotherm® were utilized to remove unwanted air that may have found its way into the system during the installation process. Spirovent® technology is designed to address all forms of air (entrapped, entrained and dissolved) that can be found in closed loop systems and remove nearly all of it. The coalescing medium creates a low velocity area inside the Spirovent® that allows air bubbles to rise and dirt to sink. There are no strainers, filters or replacement parts that can potentially become clogged. The flow always remains constant, without a high-pressure drop.

The end result is increased distribution efficiency, component life and heat transfer capabilities, along with decreased oxygen-based corrosion and pump cavitation, and the elimination of air related noises within the entire piping system.

Pictured are the new hybrid boiler system package and the primary piping pump system recently installed at Iowa Wesleyan's Science Hall.


How can you benefit using two different boilers?

In regards to Iowa Wesleyan’s energy consumption concerns, the primary reason for utilizing a modulated conventional boiler AND a condensing boiler is simple–together they are more efficient, have a lower initial cost and last longer.

For Iowa Wesleyan, the implementation of the hybrid boiler system was the ideal solution for their new heating system. They were able to save some upfront costs by purchasing a “standard” efficiency boiler, but were still able to benefit with the energy savings through the use of the high efficiency condensing boiler when conditions would allow.

Combustion air temperature also affects the net efficiency of the combustion process. Cold combustion air will absorb more energy released from burning the fuel than warmer combustion air; meaning colder combustion air reduces the efficiency of the appliance.

Lower return water temperatures and lower flue gas temperatures provide the best condensing operation. The condensing boilers recover the latent heat that is usually lost by harvesting the energy that is created when the water vapor in the flue gas is turned into a liquid.

When a customer’s boiler system is more efficient, it will not only save the customer money each year, it will also decrease their carbon footprint. The efficiency of the boiler system in part depends on the temperature of the return water. When the return water temperature is 130 degrees Fahrenheit (54.4 degrees Celsius) and above, the control system will run the conventional boiler. At 129 degrees Fahrenheit (53.9 degrees Celsius) and below, the control system will run the condensing boiler. The savings are maximized in temperate climates where winters are cold and summers are warm.

When the system uses the condensing boiler, the amount of usable, sensible heat that is generated is significantly larger than that of a conventional boiler system–creating true system efficiency.

Why not just use condensing boilers?

It may seem as if the perfect boiler system would simply use condensing technology. But if return water temperatures are too high, the condensing boiler will be only as efficient as a conventional type boiler. In a condensing boiler, when the temperature of the return water is too high and the air temperature is too cold, it will not allow a condensing boiler to operate in condensing mode. Initial capital costs can be reduced with a hybrid system by combining a lower cost conventional boiler with a premium efficiency condensing boiler.

Due to Iowa Wesleyan’s upgrades, carbon emissions are expected to reduce, which will translate into savings in total energy costs.

Every customer’s needs are unique and Metropolitan can tailor the solutions to meet your needs.

“What’s nice about these systems is that they’re completely customized to the client’s needs,” said Brickey. “Metropolitan Industries can configure the piping, boilers and system components in any manner to ease the installation process for a new or retrofit application.”

In the case of Iowa Wesleyan College, the savings are significant.

For more information regarding HVAC products, please contact Matt Brickey at 815-886-9200, ext. 266 or sales@metropolitanind.com.

Reduce Boiler Fuel Consumption by 50 Percent

Boiler Reduces Fuel Consumption 50%

HVAC Sales Engineer Matt Brickey operates the new boiler system during start-up of the system.

The life blood of any commercial building is the mechanical systems running behind the scenes that include domestic water booster systems, fire suppression pump systems and HVAC systems.

Of the three mechanical components, HVAC is by far the largest consumer of energy due to the sheer nature of how they are specified and designed. The school of thought in the HVAC community is size everything for peak demand without considering demand fluctuates, especially during warmer months when demand is at the lowest.

The biggest misconception when specifying a boiler system is, “If I specify a boiler at 90% efficiency then the plant will operate at 90% efficiency.” This is false because during light load conditions, such as during warm months, boiler efficiency becomes random which results in poor overall, “cycle” efficiency. In other words, “Seasonal Efficiency,” is only 50-80% of measured efficiency resulting in no realized energy savings during the warm months when your boiler runs less.

Metropolitan Industries, Inc., located in Romeoville, Ill., has a solution that reduces boiler fuel consumption by 20-50% using a patented procedure that addresses seasonal efficiency, which increases cycle efficiency therefore reducing fuel consumption dramatically.

Case Study – Multi Occupancy Condominium

A great example of this technology was demonstrated by the work done at a 139 unit Condominium located in Will County, Ill. At the request of the owner, the building name and location of the project is to remain confidential.

To address the leaking heating pumps located in the ceiling, Metropolitan had the contractor move them to floor level for easier inspection and service.

The existing system had two problems the first being the plant ran inefficiently due to the boilers being the sole heat source for the domestic water. Due to this, they operated all year round, even during the summer months. The inefficient design operated by pumping city water and boiler water through a shell and tube heat exchanger mounted near the ceiling. Since there was no way to prevent gravity flow of hot water through the heating system return lines, the radiation caused the building to stay warm all year, even in the dog days of summer. This resulted in increased fuel consumption and increased electrical consumption as well because air conditioners witnessed an additional load imposed by the uncontrolled flow of unwanted heat from the boiler plant and needed to run overtime.

The second problem was the existing heating pumps were leaking and had been since day one. There were eight zone pumps serving four zones. Three zones were for space heating and the other zone for domestic hot water heating. The reason why they leak was because they were mounted near the ceiling without the proper supports. This made it difficult to service the pumps given a technician need to perform the work on a ladder.

Green Performance Solution

To solve the inefficient operation of the plant, Metropolitan Industries installed a “summer boiler,” sized to the requirements of the domestic hot water heating system. This allows the owner to turn off the boiler completely when a heating load is non-existent. The result is energy savings up to 50% because the new boiler system handles the small summer loads efficiently and eliminates short cycling and cycle losses.

The summer boiler is so efficient that the owner can run it year round for more efficient domestic water heating meaning the building can now be heated with only one boiler in all but the most severe weather promotes more efficient boiler loading for improved energy performance.

Green Distribution Solution

To address the issue of the leaky heating pumps, Metropolitan moved the domestic water heat exchanger and blending valve to floor level for easier inspection and

Pictured is the variable-speed, duplex domestic water booster system with total system capacity of 220 GPM at a system pressure of 95 PSI.

service Workers no longer needed to climb on ladders when servicing the heat exchanger or blending valves. This not only improves staff and contractor safety but reduced maintenance costs overall due to the easier and less expensive service.

One of the biggest benefits is the control over domestic hot water temperatures. No longer will they have spikes or drifts of temperature irregardless of no load or light load conditions. The elimination of spikes in temperature was important given residents were at risk for being injured.

There were benefits as well with the relocation of the heat exchanger and blending valves to the floor. For one, it reduced the safety hazards associated with working on ladders when servicing the heat exchanger or blending valves improving contractor safety.  Also with the new pumps, the constant leaking was eliminated.

Realized Energy Savings

With the installation of the “summer boiler”, new heat exchanger and blending valve, the building owner realizes a 20-50% reduction in fuel consumption on any given day depending on load conditions. The entire package combines indirect water heating, condensing water heating and the blending valve function all into one complete system. Metropolitan Industries is the only company currently providing this technology. For more information, contact Matt Brickey at 815-886-9200 ext. 266 for a complete analysis of your system.

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Metropolitan Industries

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