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      EVALUATION OF SELECTED DYNAMIC MODELS IN COMPARISON WITH HOT BOX TEST RESULTS FOR MEASUREMENT OF BUILDING ENVELOPE THERMAL PROPERTIES

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          ABSTRACT

          This research is mainly focused on the experimental measurement of R-value by several different models. Building energy consumption accounts for about 40% of the total energy use in the U.S, and therefore accurate energy simulation is desired. The R-value is one of the key parameters that can influence the energy simulation results and therefore is of great importance. The Average Model has long been the most widely accepted method to measure the thermal properties of building components. However, its steady-state assumption and dependence on temperature difference limit its use especially for in-situ measurement. In this study, several dynamic models, including the Pentaur Model and R-C Network Models, are studied with test data obtained from a series of hot box tests performed in the Building Enclosure Testing Laboratory. The results show that the 3R2C model has the best performance and a desirable stability of accuracy with respect to different levels of temperature difference, and therefore is recommended for practical measurement. The results also indicate that unlike the Average Model, the accuracy of dynamic models does not necessarily depend on the level of temperature difference.

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          Most cited references 14

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          Existing building retrofits: Methodology and state-of-the-art

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            Comparing different approaches to in situ measurement of building components thermal resistance

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              In situ measuring and evaluating the thermal resistance of building construction

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                Author and article information

                Journal
                jgrb
                Journal of Green Building
                College Publishing
                1943-4618
                1552-6100
                Spring 2020
                14 July 2020
                : 15
                : 2
                : 29-43
                Author notes

                1. Department of Civil and Environmental Engineering, Ph.D. Candidate, Penn State University, University Park, PA, 16802, luxinruipsu@ 123456gmail.com

                corresponding author

                2. Department of Architectural Engineering and Department of Civil and Environmental Engineering, Professor and Bernard and Henrietta Hankin Chair of Residential Construction, Penn State University, University Park, PA, 16802. (814) 863-9788, memari@ 123456engr.psu.edu

                Article
                jgb.15.2.29
                10.3992/1943-4618.15.2.29

                Volumes 1-10 of JOGB are open access and do not require permission for use, though proper citation should be given. To view the licenses, visit https://creativecommons.org/licenses/by-nc/4.0/

                Page count
                Pages: 15
                Product
                Categories
                RESEARCH ARTICLES

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