Comparison of Approaches to Deep Energy Retrofit of Buildings with Low and High Internal Loads and Ventilation Requirements (LV-17-004)

One of the critical tasks of the International Energy Agency’s Energy Conservation in Buildings and Communities (IEC ECBC) Program’s Annex 61 “Business and Technical Concepts for Deep Energy Retrofit (DER) of Public Buildings” is to develop bundles of core technologies (measures), which, when applied in major renovation projects to older (pre-1980) buildings, allow site energy reduction by 50% or better compared to the pre-renovation baseline. This paper shows that application of a core technologies bundle to dining facilities, which have high process loads and ventilation requirements, significantly improves energy use in the building compared to the typical renovation scenario.