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Design Engineers

Building Details

Building NameDesign Engineers Construction / refurbishment date19/01/2017 Building Size1375 sqm
Building Typecommercial Address 8801 Prairie View Ln SW Cedar Rapids Iowa 52404-4850 United States Region americas

Performance Details

Net Zero Operational Carbon

Buildings or developments that display best practice outcomes in energy efficiency, are powered by renewable energy, and as such have been verified and certified as "net zero energy and/or carbon" projects.

Qualification criteria: ILFI Zero Energy Certificate level: Net EUI: 93.5 kwh/m2/yr Net RPI: 93.5 kwh/m2/yr Net Offset Ren Energy Src: Net Offset Details: Net Verification Year: 2019

Additional Details

This project is a refit of a commercial building. It included:

Ground source heat pump with total energy recovery of building exhaust air and variable speed ground loop pumping.  The building makes use of an energy recovery ventilator with total energy recovery effectiveness of 70%. Outdoor air from ERV is ducted to the return of the individual ground source heat pumps. Low return within each zone increases outdoor air delivery effectiveness (20% less OA). LED and fluorescent lighting with daylight and stepped dimming and occupancy sensors. Programmed tight control of common are occupancy sensors to reduced fixture on-hours. Installed occupancy-controlled power strips. Encouraged employees to shutoff computers at end of day. Also encouraged employees to adjust interior shading devices at appropriate times to utilize the maximum amount of daylight. Programmed permanent setback mode in unused offices. Increased unoccupied mode for heat pumps to better match hours of employee occupancy.

You can find out more about this case study from ILFI here.

Submitter's Details

OrganisationInternational Living Future Institution

The building makes use of an energy recovery ventilator with total energy recovery effectiveness of 70%.