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UNH Biomass Boiler Project Begun by Froling Energy

Photo 1: Architect's rendering of the completed Northwest Biomass Heating Plant at UNH, Durham.
Photo 2: Architect's aerial view of the completed Northwest Biomass Heating Plant with PDC deliverty truck at UNH, Durham.

This summer, Froling Energy is building the University of New Hampshire’s first large-scale biomass boiler system on the Durham campus.  Located directly across the street from Wildcat Stadium, the new Northwest Heating Plant will provide heat and hot water to four buildings and 10 greenhouses in the Thompson School neighborhood. 
 
This winter the new wood chip boiler and two new LP gas back-up boilers will be the sole source of heat for these buildings.  A key part of the project is to run pipes underground to create a small district heating system serving Putnam Hall, Barton Hall, Cole Hall, the Veterinary Diagnostic Lab and the 10 MacFarlane Greenhouses.
 
UNH’s central Combined Heat and Power Plant had provided heat to these buildings for many years but the long pipe run out to the Thompson School area was failing.  Instead of spending money on replacing the old pipes, it was decided to create a new separate district heating system fueled by one of New Hampshire’s important renewable fuels: wood chips.

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UNH facilities officials calculate that the plant will consume 750 tons of semi-dry wood chips (PDCs) which is the equivalent of over 70,000 gallons of #2 fuel oil (or over 91,000 therms of natural gas).  PDCs are screened wood chips with 25% to 30% moisture content, made from sustainably harvested trees sourced from forests in southwest New Hampshire and central Massachusetts.
 
The biomass boiler is a 2.45 million BTU/hour output Viessmann Vitoflex 300-UF which employs gasification technology, oxygen sensor based combustion controls and a multi-cyclone in the stack to make this one of the most efficient, reliable and cleanest burning wood chip-fired boiler systems available. 
 
A 45 ton capacity vertical PDC storage silo is being built into the boiler house.  PDCs are delivered a bit like oil: from a truck that pumps it through a hose and into a tank.  But with PDCs a blower truck blows them through a 5” diameter hose into the silo.  The simplicity of this delivery method significantly reduced the project’s cost.  45 tons of PDCs have the heat value of about 4300 gallons of fuel oil but they are locally sourced and near carbon neutral.  Locally sourced means fuel dollars stay here which is good for the New England economy.

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At this moment in mid-August, the boiler building is up and all of the pipe runs are in place.  Next, the boilers and all their related piping and hardware will be installed.  The plant is expected to be operational in October with final completion in December.  Froling Energy is acting as the General Contractor on this project and they have also just received the contract for supplying PDCs for the coming winter.
 
Froling Energy is a mechanical contractor focused on the installation of commercial biomass boiler systems in schools, manufacturing plants and municipal buildings throughout New England.  They also produce and deliver PDCs, an innovative screened semi-dry wood chip fuel that they make at their plant in Peterborough, New Hampshire.

For more information on Froling Energy go to FrolingEnergy.com
Contact:  Jim Van Valkenburgh, VP Sales & Marketing   603-924-1001 x2

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  • LES Work Group
    • About Us
    • Work Group Members
  • LES Projects
    • Conference
    • Renewable Energy Tool Belt
    • Newsletter >
      • July 2020
      • Summer Community Power Update
      • June 2020
      • March 2020 >
        • City, Town, County leaders form CPNH
      • January 2020
      • December 2019 >
        • Community Power Puzzle
      • October 2019
      • September 2019 >
        • Hanover Leads on Clean Energy
        • EE Relationship Managers
      • Summer 2019
      • May 2019 >
        • Spring, Solar in Lancaster
      • April 2019 >
        • John Stark HS Woodchip Boiler
      • March 2019 >
        • Offshore Wind Workforce Opportunities
      • February 2019
      • January 2019
      • December 2018
      • November 2018 >
        • GSS Solar Field
        • Solar Electrician Apprenticeship
      • October 2018 >
        • Derry 86kW Solar Array
        • UNH Biomass Boiler, Froling
      • September 2018 >
        • Littleton COOP Efficiency
        • Solar & Squam Lakes Assoc.
        • September Job Postings
      • August 2018
      • July 2018 >
        • NH State of Charge
        • Claremont Solar Saves $1 Million
        • NH Solar Shares Receives Grant
      • June 2018
      • May 2018
      • April 2018 >
        • View from the North Country
        • Claremont Municipal Champion Award
      • March 2018 >
        • Newport, Sunshine Town
        • Utility Streetlight Tariffs
      • February 2018 >
        • Dover Saves $ on Energy Upgrades
        • Liberty Utilities Energy Storage
        • Phillips Exeter Solar Array
    • Webinars
    • North Country Programs >
      • Weatherize North Country
      • Renewable Energy and Energy Efficiency for North Country Businesses Webinar
      • Shelburne, NH's Success in Energy Efficiency and Solar
    • For Local Energy Committees
    • Benchmark NH
  • Resources
    • Community Power in NH
    • NH Energy Dashboard >
      • Regional Energy Hubs
    • Case Studies >
      • EE Case Studies
      • Solar Case Studies
      • Biomass Case Studies
    • Events Calendar
    • Energy Policy
    • Energy Planning
    • Benchmarking & Tracking
    • Energy Efficiency
    • Renewable Energy
    • Transportation
    • Climate Resiliency & Adaptation