Sports & Health Center

The aging Holmsten ice rink system’s maintenance costs were increasing and was in need of replacement.  Using a new system design, which B32 successfully debuted and implemented at Gustavus Adolphus College in 2008, the existing refrigeration system was converted from a direct to an indirect system.  This design was a very attractive renovation option for the University for the following main reasons:

  • With the phase out of the high global warming potential refrigerant R-22 looming in 2020, this renovation substantially reduced the facility and campus carbon footprints by reducing the refrigerant charge from 6,000 pounds of R-22 to 800 pounds.
  • Minimizing Energy Costs. Even though the existing direct system is one of the most efficient types of refrigerant systems found in the industry today, its continued use is no longer feasible due to high material costs, safety and environmental concerns.  This option has proven to nearly match the efficiency of the existing direct system.
  • Minimize Capital Cost. Since the condition of the existing Holmsten refrigeration system was in good shape, reusing the majority of the existing equipment reduced the project costs significantly