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    Development of an active vacuum insulation panel for use in building applications

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    Nelson_H_2022.pdf
    Embargo:
    2024-12-20
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    Description:
    Thesis
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    Appendix B
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    Author
    Nelson, Haley D.
    Chair
    Marsik, Tom
    Peterson, Rorik
    Committee
    Huang, Daisy
    Keyword
    Insulation
    Insulating materials
    Vacuum technology
    Metadata
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    URI
    http://hdl.handle.net/11122/13125
    Abstract
    Vacuum insulation panels, or VIPs, are among the highest performing forms of building insulation available on the commercial market, with some per inch R-values advertised as 60°F·ft²·hr/(BTU·inch). Though there is strong market demand for high-performing forms of insulation, the adoption of VIPs is hindered by their relatively high costs, uncertain service lifespans, sensitivity to internal pressure changes, susceptibility to thermal bridging along their edges, and other issues. Particularly in building applications, typical VIPs are often passed over in favor of insulation types that can be easily customized on-site, are produced to larger dimensions, and are not as vulnerable to damage or rough handling. Many of these challenges can be addressed by VIPs equipped with the means to be evacuated as often as is necessary to reestablish a desired internal pressure, termed "active VIPs." The primary aim of this research was to develop and assess the thermal performance of an active VIP prototype. A system assembly for testing active VIP prototypes was first developed, and its testing capabilities assessed. Following confirmation of its testing efficacy, an active VIP prototype was constructed using a metallized barrier laminate and fiberglass core insulation, and its performance profiled in terms of its thermal conductivity as a function of the internal pressure. The active VIP prototype was found to have an R-value per inch of about 38°F·ft²·hr/(BTU·inch) at internal pressures on the scale of 10⁰ mTorr. This R-value per inch is about an order of magnitude higher than conventional types of insulation used in building applications. From results obtained, the active VIP prototype may be considered a viable candidate for further research and development.
    Description
    Thesis (M.S.) University of Alaska Fairbanks, 2022
    Table of Contents
    Chapter 1: Introduction -- 1.1. Vacuum insulation panel technology overview -- 1.1.1. Material composition -- 1.1.2. Performance and properties -- 1.1.3. Applications and challenges -- 1.2. The concept of an active vacuum insulation panel -- 1.3. Research goals -- 1.4. Thesis organization. Chapter 2: Active vacuum insulation panel test system design -- 2.1. Introduction -- 2.1.1. Scope of work -- 2.1.2. Definitions -- 2.1.3. System assembly development methodology -- 2.2. System assembly requirements -- 2.2.1. Equipment -- 2.2.2. Materials -- 2.2.3. General methods. Chapter 3: Baseline testing of system assembly -- 3.1. Introduction -- 3.2. Baseline test with conventional insulation -- 3.2.1. Equipment, materials, and methods -- 3.2.2. Results and discussion -- 3.3. Baseline test with a passive VIP -- 3.3.1. Equipment, materials, and methods -- 3.3.2. Results and discussion -- 3.4. Active VIP assembly validation -- 3.4.1. Equipment, materials, and methods -- 3.4.2. Results and discussion -- 3.5. Barrier laminate alteration -- 3.5.1. Equipment, materials, and methods -- 3.5.2. Results and discussion. Chapter 4. Fiberglass core insulation prototype -- 4.1. Introduction -- 4.2. Final active VIP prototype -- 4.2.1. Equipment, materials, and methods -- 4.2.2. Results and discussion. Chapter 5. Conclusions and recommendations -- 5.1. Conclusions -- 5.2. Recommendations. References.
    Date
    2022-12
    Type
    Thesis
    Collections
    Engineering

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