Tag Archives for: Nagle Energy Solutions

NES DIGITAL GARAGE VENTILATION SYSTEM DELIVERING 97% ENERGY SAVINGS AT 3RD  SAN FRANCISCO CITY GARAGE

January 04, 2018

 

 

NES DIGITAL GARAGE VENTILATION SYSTEM DELIVERING 97% ENERGY SAVINGS AT 3RD  SAN FRANCISCO CITY GARAGE

 

Limiting Japan Center Garage’s Sizable Mechanical Ventilation System to Just 3% of Its Full-load Capacity

 

 

MENLO PARK, CA, January 4, 2018 – Nagle Energy Solutions (NES) announced today its patent-pending garage-ventilation control system is cutting by more than 1.2 million kilowatt-hours (kWh) a year the baseline of consumable energy by a new and sizeable mechanical ventilation system at the City of San Francisco’s Japan Center Garage. By doing so, the NES system provides a recurring operational-cost savings in excess of $250,000 per year — not including future utility rate increases.

Real-time data logging shows that, in the 10 months since NES system commissioning (early March 2017), the energy consumed by 45, new electric motors running 20 hours per day and possessing a combined 225 horsepower amounts to just 31,900 kWh. That correlates to just 38,300 kWh consumed annually – a 97% reduction from the 1.25 million kWh per year the same mechanical system would otherwise consume with no means of fan-motor control in place.

“Post installation operating hours of the new mechanical system increased by more than 500% from the prior 12-month period with the original system, so we fully anticipated our monthly / annual energy bill would increase.  But with the NES system controlling it, the garage’s kilowatt (kW) demand has decreased considerably,” said Rich Hashimoto, corporate manager of the Japan Center Garage Corporation and president of the Japantown Merchants Association. “Our estimates show the NES system will actually reduce our building operation costs by more than $5,000 from the prior year. For any system to achieve that kind of results is remarkable.”

Recent updates to the California Energy Code (Title 24) required the San Francisco Municipal Transportation Agency (SFMTA) to upgrade the mechanical ventilation systems of some of the City’s aging garages, including the Japan Center, Golden Gateway and Sutter Stockton garages, each of which now deploys the NES digital, demand-control ventilation (DCV) system.

“With NES technology, the quality of air in the garage has improved substantially with the fans running seven days a week, so the Japan Center gains both financially and from improved surroundings assuring the health and safety of garage staff and visitors,” noted Mr. Hashimoto.

The Japan Center Garage, which includes a Main and an Annex facility encompassing a combined 300,000 square feet, was constructed in 1968. Retrofit plans included the replacement (by third-party vendors) of the original 45, 5-horsepower (HP) fan-motor units dispersed throughout the respective garages with new, equivalent-size motor units. Plans also included the utilization of variable frequency drive (VFD) technology in conjunction with the operation of each, new motor.

The NES garage DCV system controls the rate of ventilation in the Main and Annex garages based on carbon monoxide (CO) concentrations at a given juncture. BACnet-communicating NES carbon monoxide (CO) sensors provide instantaneous feedback to NES controllers, which then relay speed commands — via VFDs — to the garage’s exhaust and supply fan motors, increasing and decreasing motor speeds in proportion to CO readings.

This approach, when deployed in conjunction with proprietary NES controller sequencing logic, routinely captures kWh and peak kW demand savings in the range of 95% and, in the case of the Japan Center, greater.

NES technology enables the City & County of San Francisco adhere to stricter energy efficiency and health and safety standards imposed in California for enclosed, commercial garages. Energy savings at the Sutter-Stockton Garage has been steady a 96% since NES commissioned its system there in August 2016. At Golden Gateway Garage, which NES commissioned in July 2016, energy savings have consistently fallen in the range of 90% to 93%.

 

About Nagle Energy Solutions: Based in Menlo Park, CA, Nagle Energy Solutions, LLC (www.nagle- energy.com) develops, manufactures, distributes and installs a patent-pending demand-control ventilation (DCV) system for commercial garages that markedly reduces energy consumption by increasing operational efficiencies — all while the garage fans run continuously.

 

For further information, please contact:

 

Frank Nagle, Principal

Nagle Energy Solutions, LLC

Phone:  (415) 378-5560

Email:   frank@nagle-energy.com

NES DIGITAL GARAGE VENTILATION SYSTEM DELIVERS 93% ENERGY SAVINGS AT SAN FRANCISCO CITY GARAGE

June 08, 2017

 

NES DIGITAL GARAGE VENTILATION SYSTEM DELIVERS 93% ENERGY SAVINGS AT SAN FRANCISCO CITY GARAGE

 

 

Limiting energy consumed by Golden Gateway Garage Ventilation System to Just 7% of Its Full-load Capacity

 

 

 

MENLO PARK, CA, June 7, 2017 – The Nagle Energy Solutions (NES) innovative garage-ventilation control system continues to deliver exceptional operational efficiencies and energy savings; this time limiting the energy consumed by a sizable mechanical ventilation system at the City & County of San Francisco’s Golden Gateway Garage to just 7% of its full-load capacity – the equivalent of a 93% reduction in kilowatt-hour (kWh) consumption and peak kilowatt (kW) demand.

In 2015, engineers for the City & County of San Francisco selected the NES digital, demand-control ventilation (DCV) system for commercial garages as the basis of design for upgrading the mechanical ventilation systems of three, City owned properties: Golden Gateway Garage; Sutter-Stockton Garage; and Japan Center Garage. The Golden Gateway mechanical ventilation system retrofit is the first to be completed, and the NES system has been monitoring energy consumption on a real-time basis – a standard capability of NES controllers – since its commissioning in July 2016.

Golden Gateway Garage is a three-level, 345,000 square feet, enclosed parking facility in the heart of downtown San Francisco, subdivided in to East and West garages, each measuring 172,500 square feet. It can accommodate a total of 1,095 vehicles. The upgrade of its mechanical system included the installation (by third-party vendors) of Huntair Fanwallâ technology in conjunction with ABBÔ variable frequency drive (VFD) technology. In all, 12 new, fanwall units and four new, stand-alone garage ventilation motors were installed possessing a combined 155.5 horsepower (HP).  Tying it all together is the NES system, controlling the primary motor / VFD functions based on carbon monoxide (CO) concentrations in the garage.

“Without a doubt, the SFMTA is delighted with the results,” said David Dunham, Principal Analyst for the San Francisco Municipal Transportation Agency (SFMTA), which maintains operational oversight of all San Francisco municipal garages. “Taking into account the considerable amount of horsepower powering Golden Gateway’s mechanical ventilation system and the average fan-motor runtime – 18 hours a day – the energy savings captured by the NES system is outstanding,” Mr. Dunham noted.

With no means of ventilation control in place, Golden Gateway’s new motors would consume more than 719,000 kWh throughout the course of a calendar year – or approximately 60,000 kWh per month – with a correlating, annual peak kW demand of more than 115 kW. The electric utility rate for the garage is

$0.182/kWh, so at the calculated rate of kWh consumption, the annual cost to ventilate the garage would amount to more than $131,000 – not including or factoring in future utility rate increases.

Post-installation monitoring and data logging shows the NES digital, garage DCV system is limiting energy consumption to about 4,200 kWh a month or 50,000 kWh per year. That corresponds to reoccurring, annual energy savings of approximately 669,000 kWh. Peak kW demand is limited to 8 kW per year with the NES system in place and controlling Golden Gateway’s garage ventilation system.

The NES system also slashes energy costs by 93%. The cost to ventilate the garage averages $760 a month – versus an approximate $11,000 a month without the NES system. The NES DCV system will provide minimum cash inflow (from the energy savings) in excess of $1.8 million throughout its 15-year lifespan.

The significance of the energy savings is underscored when viewed in context to health and safety factors at Golden Gateway.

The garage’s payment system requires patrons to pay an attendant in a toll booth before exiting the garage, which results in long traffic lines each weekday between noon and 3 p.m., as a steady stream

of drivers simultaneously attempt to exit. As a means to constrain CO concentrations, NES teamed with garage management to — via the NES TR100 controller — increase the baseline motor speed of one of Golden Gateway’s large exhaust-fanwall systems on a 24/7 basis. Additionally, NES set a daily “purge” schedule, increasing the ventilation rate in the garage twofold by automatically ramping the speed of all, remaining exhaust and supply fan motors for three (3) hours a day – from noon to 3 p.m. – Monday thru Friday.

“Beyond ensuring environmental sustainability, protecting the health and safety of garage employees and patrons were critical considerations during the planning stage(s) for each, municipal garage retrofit,” noted Mr. Dunham. “The NES system provides a level of assurance that the health and safety of all those in the garage are protected while holding energy consumption in check.”

Furthermore, NES technology enables the City & County of San Francisco adhere to stricter energy efficiency and health and safety standards imposed by the State of California for enclosed, commercial garages.

NES commissioned its garage DCV system at the Sutter-Stockton garage in August 2016, and it’s presently monitoring / data logging energy consumption there. The same holds for the Japan Center Garage, where NES commissioned its system in early March 2017.

 

About Nagle Energy Solutions: Based in Menlo Park, CA, Nagle Energy Solutions, LLC (www.nagle-energy.com) develops, manufactures, distributes and installs an innovative demand-control ventilation (DCV) system for commercial garages that dramatically reduces energy consumption, increases operational efficiencies and ensures adherence to strict health & safety standards – all while the garage-fan motors run continuously.