Conference Editor

Jianshun Zhang; Edward Bogucz; Cliff Davidson; Elizabeth Krietmeyer

Keywords:

Exterior wall retrofit, building energy simulation, prefabricated retrofit.

Location

Syracuse, NY

Event Website

http://ibpc2018.org/

Start Date

25-9-2018 10:30 AM

End Date

25-9-2018 12:00 PM

Description

As part of a larger project to develop prefabricated technologies for retrofitting building envelopes of Canadian homes, a small building was retrofitted and instrumented. This prefabricated retrofit method is intended to be applied directly over existing cladding. Two prototype retrofit wall systems were installed on the building; a nailbase panel, and a wood frame panel. The existing wall had an RSI value of 1.80 m2K/W (including film coefficients) and the resulting retrofitted walls reached values of 6.40 m2K/W and 5.72 m2K/W. With the addition of a new air barrier, blower door tests have shown a large reduction in infiltration from 7.62 ACH to 0.82 ACH at 50 Pa. This paper discusses the approach taken, the construction of the prefabricated panels, preliminary in-situ RSI measurements, and modelling of thermal bridging and energy savings for the pilot project.

Comments

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DOI

https://doi.org/10.14305/ibpc.2018.be-7.05

Creative Commons License

Creative Commons Attribution-Noncommercial 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 4.0 License.

COinS
 
Sep 25th, 10:30 AM Sep 25th, 12:00 PM

Monitoring and modelling of a prefabricated exterior envelope retrofit

Syracuse, NY

As part of a larger project to develop prefabricated technologies for retrofitting building envelopes of Canadian homes, a small building was retrofitted and instrumented. This prefabricated retrofit method is intended to be applied directly over existing cladding. Two prototype retrofit wall systems were installed on the building; a nailbase panel, and a wood frame panel. The existing wall had an RSI value of 1.80 m2K/W (including film coefficients) and the resulting retrofitted walls reached values of 6.40 m2K/W and 5.72 m2K/W. With the addition of a new air barrier, blower door tests have shown a large reduction in infiltration from 7.62 ACH to 0.82 ACH at 50 Pa. This paper discusses the approach taken, the construction of the prefabricated panels, preliminary in-situ RSI measurements, and modelling of thermal bridging and energy savings for the pilot project.

https://surface.syr.edu/ibpc/2018/BE7/11

 

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