Summary

Since 2009, MEP Associates, LLC (MEP) has provided professional engineering services as the lead designer for the Ball State University (BSU) campus geothermal conversion project. The system has eliminated its four coal burning plants, reduced its carbon footprint by nearly half, provided heating and cooling for 27 buildings, and has totaled over $2 million in annual savings. The geothermal system features two vertical loop fields, 10 miles of buried distribution piping, 1,000 miles of loop field pipe, two district energy stations, and four 2,500-ton heat pump chillers.

Campus Energy Stations
DESN: The 12,000 SF District Energy Station North (DESN) was designed to house two 2,500-ton compound centrifugal compressor, heat pump chillers, and accessory components. The DESN features a modular, maintenance-free plant system, and a green roof.

DESS: The 16,480 SF District Energy Station South was designed to house two 2,500-ton compound centrifugal compressor heat pump chillers, two centrifugal chillers, and a 4,000-ton cooling tower.

DESN Fluid Cooler: This included the addition of a 1,000-ton fluid cooler.

Borefields
BSU has two vertical loop borefields. The borefield located on the north part of campus consists of (1,800) 400-foot-deep bores. The borefield located on the south part of campus consists of (1,583) 500-foot-deep bores.

Utility Distribution
North Packages 1-2: Included construction of new chilled and hot water supply and return distribution piping north of Riverside Avenue for the north borefield and DESN.

South Packages 1-3: Included construction of new chilled and hot water supply and return distribution piping for south of Riverside Avenue for the south borefield and DESS.

Type
Geothermal Campus Conversion

Scope
Mechanical, Electrical, Plumbing, Geothermal Design Services

Size
5,600,000 SF / 47 Buildings

Status
Completed 2018

LEED
DESN-USGBC Gold / DESS-USGBC Gold

Awards
Anticipated EUI 105 KBTU/SF

$2M



Annual Energy Cost Saved

Environmental
Impact

MEPs Direct Impact
  • Eliminate 75,000 tons of carbon dioxide emissions
  • Eliminate 240 tons of nitrogen oxide
  • Eliminate 200 tons of particulate matter
  • Eliminate 80 tons of carbon monoxide
  • Eliminate 1,400 tons of sulfur dioxide
  • Eliminate 3,400 tons of coal ash - Which otherwise would be dumped in a landfill