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As buildings age, retrofits are becoming an increasinglyimportant topic for the ever-growing and aging existingbuilding stock. With 50% of American buildings builtbefore 1980 and only 0.5–1% of existing buildingsretrofitted annually, thermography can be used to nonintrusivelycharacterize building envelopes to informenergy modeling, façade design, and project appraisalfor potential projects. This paper presents a short reviewof literature and published methods to characterizeexisting building envelopes’ thermal properties, followedby a preliminary thermography-based methodology tocharacterize the thermal resistance and thermal massproperties of a building envelope. The proposedmethodology utilizes optimization-enabled transientfinite elements to characterize envelope thermalproperties. The verification of this methodologyshowcased that the proposed finite-element workflowcan adequately characterize an envelope’s thermalperformance. This methodology serves as a foundationfor future research in building envelope defectcharacterization.
Citation: ASHRAE/IBPSA-USA Bldg Simulation Conf, Sept 2020
Product Details
- Published:
- 2020
- Number of Pages:
- 10
- Units of Measure:
- Dual
- File Size:
- 1 file , 2.2 MB
- Product Code(s):
- D-BSC20-C022
