Athletic Fieldhouse

BACKGROUND

The Athletic Fieldhouse is a four-level building that constitutes two-thirds of the Unitas® Stadium complex square footage.  Though a small building, the Fieldhouse’s energy consumption of electricity and fuel oil were above campus norms from its initial occupancy in 2003.  The heating boilers’ fuel oil delivery and firings were problematic from the start, and occupant complaints about inadequate cooling soon surfaced, too.

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The Fieldhouse itself adjoins the Stadium’s south concourse and houses a mixture of home/visiting team locker rooms, athletic offices, meeting spaces, sports medicine treatment spaces, and a large multi-purpose/event space with glass curtain walls.  It was completed in the fall of 2003 with the stadium construction project.  Other components of the stadium complex include a press box, bathroom facility, and north/south stadium concourses and spectator stands.  

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SOLUTIONS

Over the years since the building’s opening, Towson University Operations and Maintenance leaders identified a number of energy conservation opportunities.  Fortuitously, the nearby construction of a basketball arena brought natural gas into the site which allowed fuel conversion in 2012 and eliminated the heating plant operational issues.

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In the summer of 2014, university HVAC trades personnel accomplished the following work:

  • replacement of two 2,000 MBH heating boilers with two Lochinvar Crest modulating condensing boilers;
  • replacement of two 1,250 gallon hot water boilers with six Noritz instantaneous hot water heaters;
  • installation of a run-around heat recovery coil on the exhaust side of a 100% outside air constant volume handling unit (AHU) with 24,000 CFM capacity;
  • installation of VFDs on the supply and exhaust fans of this same AHU;
  • installation of VAV dampers with occupancy sensors in locker room areas to minimize ventilation rates during unoccupied times.  
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OTHER BENEFITS

These upgrades have reduced maintenance hours and improved equipment reliability associated with replacement of problematic heating boilers with condensing boilers.  Additionally, there has been decreased operational run time on the air handling unit supply and return fans since they are now VFD-controlled.

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Annual Energy Use

(Source EUI)
Baseline (2013)
684 kBtu/sq. ft.
Actual (2016)
378 kBtu/sq. ft.

Energy Savings:

45%

Annual Energy Cost

Baseline (2013)
$57,000
Actual (2016)
$21,000

Cost Savings:

$36,000

Sector Type

Education

Location

Towson, Maryland

Project Size

53,000 Square Feet

Financial Overview

Project Cost: $216,000

Towson University Fieldhouse
Towson University Fieldhouse

Fieldhouse Boilers
Fieldhouse Boilers

Fieldhouse Heat Recovery Coil
Fieldhouse Heat Recovery Coil