Experimental and Numerical Examination of Naturally-Aged Foam-VIP Composites

Kaushik Biswas, Rohit Jogineedi and Andre Desjarlais
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Kaushik Biswas: Oak Ridge National Laboratory, One Bethel Valley Road, Oak Ridge, TN 37831, USA
Rohit Jogineedi: Oak Ridge National Laboratory, One Bethel Valley Road, Oak Ridge, TN 37831, USA
Andre Desjarlais: Oak Ridge National Laboratory, One Bethel Valley Road, Oak Ridge, TN 37831, USA

Energies, 2019, vol. 12, issue 13, 1-12

Abstract: This article describes an aging study of a foam-vacuum insulation panel (VIP) composite insulation board installed on a test wall in a natural exposure test facility through a 30-month period. Silica-based VIPs with a polymeric barrier film were used in this study. The study results showed the effectiveness of a VIP-based insulation to reduce the heat gains and losses through a wall compared to regular rigid foam insulation of the same thickness. However, the long-term performance monitoring indicated a gradual decline in the thermal performance of the foam-VIP composite. In addition, one-dimensional numerical models were created to simulate the in situ behavior of the foam-VIP composite. One model utilized constant thermal conductivities of the test wall components and another utilized temperature-dependent thermal conductivities; the latter used measurements of conductivity over temperatures ranging from −15 to 55 °C. The results of the simulations emphasized the need to use both temperature and time-dependent material properties for accurately predicting the long-term performance of VIP-based insulation systems.

Keywords: vacuum insulation panels; natural aging; temperature-dependent properties; numerical simulations (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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