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Leveraging Hygroscopic Bio-Based Mat...

Kreiger, Brenton K.

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Leveraging Hygroscopic Bio-Based Materials for Grid-Interactive Building Energy Savings.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Leveraging Hygroscopic Bio-Based Materials for Grid-Interactive Building Energy Savings./
作者:	Kreiger, Brenton K.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2020,
面頁冊數:	158 p.
附註:	Source: Masters Abstracts International, Volume: 81-12.
Contained By:	Masters Abstracts International81-12.
標題:	Architectural engineering. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=27836238
ISBN:	9798645495114

Leveraging Hygroscopic Bio-Based Materials for Grid-Interactive Building Energy Savings.
Kreiger, Brenton K.

Leveraging Hygroscopic Bio-Based Materials for Grid-Interactive Building Energy Savings. - Ann Arbor : ProQuest Dissertations & Theses, 2020 - 158 p.

Source: Masters Abstracts International, Volume: 81-12.

Thesis (M.E.)--University of Colorado at Boulder, 2020.

This item must not be sold to any third party vendors.

This study concerns the exploration and development of a semi-empirical modeling framework to account for hygrothermal interactions in buildings. Bio-based materials are explored for their hyperactive moisture buffering capacity and ability to reduce energy-related costs while participating in the demand-response market through increased energy flexibility.A literature review and meta-analysis of the field of moisture buffering identified the inherent potential of hygroscopic, bio-based materials to exhibit superior moisture buffering values. The review also elucidated that more accurate, physics-based models are computationally expensive and that material heterogeneity can be a large source of error. Finally, the findings of the literature review indicated that materials with high moisture buffering could lead to substantial building energy savings. However, given the limitations of computational approaches, new experimental-computational frameworks are needed to accurately quantify potential energy savings at the building scale. Therefore, this work concerns the formulation of a concurrent experimental-computational approach to quantifying the potential building energy savings of new biological materials that display high moisture buffering capacities.In the first study, the moisture buffering capacities of two local lichen genera (usnea and hyperphyscia) and gelatin hydrogel-sand composites were characterized, along with two common building controls-spruce plywood and gypsum board. Lichen was chosen because of the dual benefit of high sorption properties and pollutant (e.g., CO2) sequestration. The bio-based hydrogel-sand composite was chosen not only for its hydrophilicity, but also for its potential to serve as a substrate for synthetic lichen growth. These materials were characterized using the NORDTEST moisture buffering value (MBV) procedure, sorption isotherm testing, water vapor permeability testing, thermal conductivity analysis, and isothermal conduction calorimetry. The isothermal conduction calorimetry testing was a novel experimental procedure in the field that provided empirical information to model the complex process of heat release upon moisture uptake. This study revealed that lichen exhibit equal or enhanced moisture buffering and vapor diffusivity compared to conventional building materials. In summary, the experimental study substantiated that bio-based, hygroscopic materials, especially hyperphyscia lichen, display superior hygroscopic properties.In a second study, a modeling framework for energy flexible buildings was developed using a basic RC model, a more complicated MATLAB Simulink model, and a complex EnergyPlus base model from the Pacific Northwest National Laboratory. This study showed the potential of energy flexible, residential buildings to participate in the demand-response market (e.g., shifting loads to off-peak times for cost savings and grid benefits) when motivated with a time-of-use pricing structure. More specifically, this study substantiated that dynamic building envelopes facilitate energy savings through demand response participation.In a third study, the model from the second study was combined with the empirical inputs from the first study in order to quantify the potential contribution of hygrothermal interactions to building energy savings and peak load reduction. The results from this study suggest up to 21.4% overall cost savings and 48.5% cooling-related cost savings, as well as 14.5% overall peak load and 28.5% cooling-related peak load savings.Taken together, the results of this work illustrate a high potential to leverage engineered, bio-based-perhaps even living-materials for building energy savings by incorporating novel control strategies to capitalize on their exceptional hygrothermal properties.

ISBN: 9798645495114Subjects--Topical Terms:

3174102
Architectural engineering.
Subjects--Index Terms:

Energy flexible buildings

Leveraging Hygroscopic Bio-Based Materials for Grid-Interactive Building Energy Savings.
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