Comparative Life-Cycle Analysis of Insulation Materials in A Dwelling, Addressing Alternative Heating Systems and Life Spans

Saadatian, Shiva; Freire, Fausto; Simões, N.

doi:10.18178/jocet.2016.4.6.333

Cited by 8 publications

(5 citation statements)

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“…Several studies are reported in the literature for building envelope materials and parameters to reduce operation energy. Among these studies, changing the different parameters of the building envelope in a reference building and finding the scenario with the most energy efficient combinations are a topic of great importance [7][8][9][10]. For example, Mirrahimi et al [11] showed that building envelope parameters (window/wall ratio, wall type, building orientation, glazing, etc.)…”

Section: Introductionmentioning

confidence: 99%

Energy and economic performance analysis of different ventilated wall construction types in residential buildings

Bahadır¹,

Thomollari²,

Kalfa³

et al. 2020

JCEMI

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Due to the increasing energy consumption in the world, energy efficiency has become the most important issue in sectors with high energy use such as industry, transportation, agriculture and construction. In many countries, the energy consumed in housing composes a large part of the total energy consumption. In Turkey, about 20% of total energy consumption is utilized in residential buildings and about 60% of this energy is used for heating. The energy consumed in residence buildings can be reduced by measures to decrease the heating and cooling loads. For this purpose, the main objective of this study is to investigate the effect of ventilated walls on the energy and cost performance of buildings. The energy and cost efficiency of 27 different ventilation walls with 3 different insulation thicknesses, 3 different ventilation gap thicknesses and 3 different cladding materials were compared with the reference wall. For a family of 3, a flat with a 2 + 1 plan was chosen for investigation and the flat is located in Trabzon, which represents the moderate-humid climate region. Flat plans with different ventilated walls were modeled using DesignBuilder energy simulation software and monthly/annual heating and cooling loads were obtained. Then, life cycle cost analysis has been conducted to investigate the cost effective ventilated wall types. Although the high initial investment costs of the investigated ventilated walls increase the life cycle costs, it has been observed that they provide energy savings in buildings.

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Section: Introductionmentioning

confidence: 99%

Energy and economic performance analysis of different ventilated wall construction types in residential buildings

Bahadır¹,

Thomollari²,

Kalfa³

et al. 2020

JCEMI

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“…In TIM LCA the functional unit (FU) is the amount of the material required to present thermal resistance of 1 m 2 K/W from a surface area of 1 m 2 of the TIM, but in Window LCA, the FU is the triple glazed window. The Life Cycle Inventory was based on the Environmental Product Declaration (EPD) and literature data for several European countries, while the environmental impacts were calculated according to CML 2001 and CED methods (Teenou, 2012;Saadatian, 2014). Tables 2 and 3 present the economic and environmental data for the examined materials.…”

Section: Building Economic and Environmentalmentioning

confidence: 99%

Multi-Criteria Optimization for the Decision Making in Building Envelope Thermal Design

Kilis

Πλόσκας

Panaras

2023

IOP Conf. Ser.: Earth Environ. Sci.

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The increase of energy utilization reinforced the need of reducing the primary energy consumption based on fossil fuels and the limitation of carbon dioxide (CO2) emissions to the atmosphere. Such goals aim at the provision of affordable and generally clean energy for the citizens. However, the final decision making is hard to be achieved, due not only to the multitude variety of such proposed technologies, but also to the consideration of different criteria and scenarios, that in many cases are conflicting with each other. This paper deals with the optimization of the building envelope design considering thermal insulation, economic, and environmental aspects. The Life Cycle Assessment perspective is implemented for the data of the environmental criterion, focusing on the CO2 emissions and the cumulative energy demand. The decision making refers not only to the selection of the appropriate thermal insulation material and its width, but also to the choice of the window frame material. In that way, Mathematical Programming (MP) models for the optimization of such criteria were developed. The General Algebraic Modeling System (GAMS) was used to model these problems and the BARON solver was used to solve them. The respective MP models include mixed integer nonlinear programming problems, multiple objective functions, as well as multi-criteria techniques such as goal programming. According to the results, the increase of the envelope thermal protection implies that the economic and environmental costs are higher, displaying the importance of criteria compensation. For smoothing the conflicting criteria, a weighting sensitivity analysis was conducted, showing that reference optimal values are formed for certain ranges of weights, elaborating the framework of decision-making without having to precisely prescribe them beforehand. All in all, the use of the optimization models can improve and facilitate the building design process by analyzing the advantages and drawbacks of the various materials/technologies and allowing the comparative evaluation of the considered alternatives.

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“…While the reported embodied energy of XPS was slightly higher than EPS, its GHG emissions were more than 20 times higher compared to the data reported by Franklin Associates (2017). Since XPS and EPS have the same resin (polystyrene), many studies compared their LCA and, likewise, reported a much higher GHG emissions from XPS (Silvestre et al, 2011, Pargana et al, 2014, Nicolae & George-Vlad, 2015, Biswas et al, 2016, Saadatian et al, 2016, Llantoy et al, 2020, Monteiro et al, 2020. Specifically, Biswas et al (2016) compared the Cradle-to-Grave GWP of EPS and XPS with different blowing agents (HFC-134a, HFC-152a, CO2), and found that the significant fugitive emissions of high-GWP blowing agents was the major contributor of GHG emissions.…”

Section: A23 Extruded Polystyrenementioning

confidence: 99%

“…The results showed that EPS and PUR had low contribution to all impact categories and low embodied energy, while XPS presented high global warming potential (GWP) and photochemical ozone creation potential (POCP). Many other studies (Silvestre et al, 2011, Nicolae & George-Vlad, 2015, Saadatian et al, 2016, Llantoy et al, 2020, Monteiro et al, 2020 assessed both embodied and operational energy of these three materials with the same thermal resistance for various applications or under multiple scenarios, and presented very different results on the environmental performance of PUR compared to EPS and XPS. For example, researchers took the impact of insulation thickness, ventilation level, exterior wall alternatives (double brick, concrete and wood walls) and building occupancy patterns into consideration, and assessed the trade-offs between embodied and operational impacts for some insulation materials including PUR, EPS and XPS (Monteiro et al, 2020).…”

Section: System Boundary and Manufacturing Processmentioning

confidence: 99%

Building Life-Cycle Analysis with the GREET Building Module: Methodology, Data, and Case Studies

Cai

Wang

Kelly

et al. 2021

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Comparative Life-Cycle Analysis of Insulation Materials in A Dwelling, Addressing Alternative Heating Systems and Life Spans

Cited by 8 publications

References 0 publications

Energy and economic performance analysis of different ventilated wall construction types in residential buildings

Energy and economic performance analysis of different ventilated wall construction types in residential buildings

Multi-Criteria Optimization for the Decision Making in Building Envelope Thermal Design

Building Life-Cycle Analysis with the GREET Building Module: Methodology, Data, and Case Studies

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