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      THE ENERGY SAVINGS POTENTIAL OF OPTIMIZED SLAB-ON-GRADE FOUNDATION INSULATION RETROFITS

      , Ph.D (Eng) 1 , 2

      Journal of Green Building

      College Publishing

      slab-on-grade, insulation, energy, cost

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          Abstract

          A recently developed 3-dimensional earth contact simulation program that operates as a subroutine of the EnergyPlus whole building energy simulation program was used to evaluate the energy performance and cost-effectiveness of retrofit slab-ongrade (SOG) foundation insulation. An optimized retrofit insulation design utilizing hydro-vacuum excavation was developed that generated 8.4 % larger metered (or site) energy savings at a $428 lower cost than the IECC 2012 requirement in a Minneapolis, MN climate for a 400 ft 2 test building. The energy performance and cost effectiveness of single and multi-family buildings was assessed for climate Zones 4 – 7. With reference to the Building America B10 benchmark, the highest site energy savings of 5 % was realized for a single family home in Duluth, MN, and the lowest savings of 1.4 % for a 4-unit townhouse in Richmond, VA. SOG foundation insulation retrofit simple paybacks ranged from 18 to 47 years. Thus it is likely that larger energy savings of 10% or more with concomitantly reduced simple paybacks can only be realized in well-insulated buildings.

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          Most cited references 14

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          Fundamentals of exergy analysis, entropy generation minimization, and the generation of flow architecture

           Adrian Bejan (2002)
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            Measured and predicted thermal performance of a residential basement

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              Three-dimensional earth-contact heat flows: A comparison of simulated and measured data for a buried structure

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                Author and article information

                Journal
                jgrb
                Journal of Green Building
                College Publishing
                1552-6100
                1943-4618
                1943-4618
                Summer 2015
                : 10
                : 3
                : 116-136
                Author notes

                1. Program Director and Senior Research Associate, Energy Systems Design Program, University of Minnesota, and Principal, Lofrango Engineering.

                2. Senior Research Fellow, Center for Sustainable Building Research, University of Minnesota.

                Article
                jgb.10.3.116
                10.3992/jgb.10.3.116
                ©2015 by College Publishing. All rights reserved.

                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: 21
                Product
                Categories
                RESEARCH ARTICLES

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