Building Energy Model Development for Retrofit Homes

Technical Report · Sun Sep 30 04:00:00 EDT 2012

DOI:https://doi.org/10.2172/1060666· OSTI ID:1060666

Chasar, David ^[1]; McIlvaine, Janet ^[1]; Blanchard, Jeremy ^[1]; Widder, Sarah H. ^[1]; Baechler, Michael C. ^[1]

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1. Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)

Based on previous research conducted by Pacific Northwest National Laboratory and Florida Solar Energy Center providing technical assistance to implement 23 deep energy retrofits across the nation, six homes were selected in Florida and Texas for detailed post-retrofit energy modeling to assess realized energy savings (Chandra et al, 2012). Of these homes, three homes in San Antonio were selected for detailed analysis of post-retrofit energy use and realized energy savings. The actual savings achieved in these homes post-retrofit, as determined by a utility bill comparison, is presented. For the three metered homes in Florida, no pre-retrofit utility bills are available, so a utility bill comparison to determine realized savings is not possible. Assessing realized savings can be difficult for some homes where pre-retrofit occupancy and energy performance are unknown. Initially, savings had been estimated using a HERS Index comparison for these homes. However, this does not account for confounding factors such as occupancy and weather. This research also addresses a method to more reliably assess energy savings achieved in deep energy retrofits for which pre-retrofit utility bills or occupancy information is not available.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1060666
• Report Number(s): PNNL--21858; BT0101000
• Country of Publication: United States
• Language: English

Related Subjects

energy efficiency
energy modeling
residential retrofit