Life-Cycle Energy Assessment in Buildings: Framework, Approaches, and Case Studies

Praseeda, K.I.; Reddy, B. V. Venkatarama; Mani, Monto

doi:10.1016/b978-0-12-409548-9.10188-5

Cited by 15 publications

(7 citation statements)

References 22 publications

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“…A weight ratio of 3:1 was used for the manufacture of the DAPTC (30 kg steel and 10 kg glass) 5 . The amounts of embodied water and energy for steel and glass are 98.64 m 3 /kg, 32 MJ/kg, 8.24 m 3 /kg, and 15.9 MJ/kg, respectively 42,43 . Given the low volume concentrations of the nanofluids and the low volumetric capacity of the collector, the energy consumption of nanoparticles can be ignored in comparison to the embodied energy of other materials 44 …”

Section: Resultsmentioning

confidence: 99%

Multi‐objective assessment of a DAPTC based on 4E analysis: Water‐energy‐environment nexus

Saray

Heyhat

2022

Intl J of Energy Research

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Summary This study aims to thermodynamic analysis and optimizes the performance of a nanofluid‐based direct absorption parabolic trough collector (DAPTC) using a non‐dominated sorting genetic algorithm (NSGA‐II). For this purpose, silicon carbide (SiC) and copper oxide (CuO) at three different volume fractions (0.01%, 0.05%, and 0.1%) are used as the nanoparticles and water as the base fluid. The results obtained using the method presented in the current study are verified through experimental results, which are in good agreement with those. A comprehensive analysis is conducted to determine the effect of operating conditions and geometric dimensions on the energy and exergy efficiencies and economic performance of the DAPTC. In addition, an environmental investigation is performed to determine the effect of using nanofluids on CO2, NOx, and SOx reduction. Under the operating conditions, the cost of energy production, when SiC/water and CuO/water nanofluids are utilized instead of the base fluid, is reduced by 31.08% and 47.92%, respectively. The use of SiC/water and CuO/water nanofluids can reduce CO2 emissions by 216.18 and 332.55 kg and also water consumption by 968.1 and 1489.1 m3, respectively. The optimum energy and exergy efficiencies are 65.53% and 38.97%, respectively. Also, the SiC/water and CuO/water nanofluids have a 35% and 67.35% environmental impact, respectively. Highlights Multi‐objective optimization of a DAPTC using the NSGA‐II algorithm. The energy, exergy, economic, and environment of solar collectors were analyzed. The 547.86 MJ energy and 1489.1 m3 water were saved by the exploitation of CuO/water nanofluid. The 316.15 MJ energy and 968.1 m3 water were saved by the exploitation of SiC/water nanofluid. CO2 emissions decreased by 332.55 and 216.18 kg using CuO/water and SiC/water.

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Section: Resultsmentioning

confidence: 99%

Multi‐objective assessment of a DAPTC based on 4E analysis: Water‐energy‐environment nexus

Saray

Heyhat

2022

Intl J of Energy Research

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“…At this mix, they produced a compressive, tensile, and flexural strength of more than 155, 19, and 27 MPa, respectively. All these values were in the range of ultra-high concrete (Vidya et al, 2017;Santhanam and Anbuarasu, 2020).…”

Section: Ternary Blends Of Rice Husk Ash and Other Wastes In Concretementioning

confidence: 93%

“…According to Summerbell et al, 2016;Adesina, 2020;and Miller et al, 2021, the contribution of concrete industry into the global greenhouse gas emissions is between 7 -9%. Also cement has a very high embodied energy, that is, the energy consumed for raw material mining, transportation, manufacture, assembly, installation, disassembly, and demolition for any product system over the duration of a product's life (Praseeda et al, 2017). Apparently, a material with low Embodied Energy is regarded more sustainable.…”

Section: Introductionmentioning

confidence: 99%

A Review of Structures and Performance of Ternary Blends of Rice Husk Ash and Some Wastes in Concrete

Fapohunda,

Osanyinlokun,

Abioye

2023

Electron. J. Struct. Eng.

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The field of structural engineering has in recent times begun to widen its scope from the traditional analysis and design, into the development of new structural materials. This is because the use of non-renewable materials in forming and framing structural projects are raising serious environmental concerns bothering on sustainability of materials, especially cement, to produce structural concrete. Cement has been found to be a major contributor to greenhouse gases which affect the environment negatively. Waste from both the industrial and agricultural industries are gradually becoming sources of material to partly replace cement in concrete because of their pozzolanic properties. The agro-based pozzolanic materials include Rice husk Ash (RHA), Saw dust ash (SDA), Palm oil fuel ash (POFA) amongst others. To further widen the scope and resource base of pozzolanic materials for concreting, ternary blends consisting of agro-based pozzolans are being researched into. These research efforts however appear to be uncoordinated, and thus there is a need to juxtapose these efforts together to see the extent of work done on such ternary blends and present their relevant structural properties. This is with a view to helping identify gaps in such research as a means of preventing wastage of research energies. This paper presents a review of structural properties of some agro-based ternary blends used in structural concrete. It is concluded that more research effort is needed, especially in the development of practical and acceptable guidelines that will aid their application in concrete, for sustainable production of structural concrete.

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“…However, many existing buildings have come to the end of their service life and/or do not meet present standards, and structural assessment and consequent structural retrofit is required in combination/addition to energy retrofit measures [4,5]. Indeed, existing buildings already embody a large amount of energy [6], and potential losses connected with structural damage, e.g., that caused by earthquakes, or with the disposal of demolition residuals from their replacement, would increase that figure, thus emphasizing the need for a holistic or life-cycle approach [5]. Nevertheless, further research on the embodied energy of buildings is required [7].…”

Section: Introductionmentioning

confidence: 99%

Vulnus Web: A Web-Based Procedure for the Seismic Vulnerability Assessment of Masonry Buildings

2023

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Masonry is a widespread construction system, but it is very prone to seismic damage. In Italy, almost 60% of residential buildings are constructed in masonry, and 85% of them were built before 1980 without specific design regulation; thus, there is the need for large-scale vulnerability assessment. When large stocks of residential buildings (>50–100) are involved, also in historical centers, seismic vulnerability analysis must resort to simplified and computer-aided methods. Among these, the best known analyze (i) the overall shear strength normalized to the weight; (ii) the activation coefficient of local mechanisms; and (iii) dimensionless indexes obtained from the weighted sum of scores associated with a set of vulnerability factors. The Vulnus procedure proposes a vulnerability function in the 3D space defined by these factors, namely VIP, VOP and VV. The ‘mechanical’ indexes VIP and VOP determine the capacity of the building (in-plane and out-of-plane, respectively), whereas the ‘empirical’ index VV sets the pace at which this capacity is reached and the uncertainty in its final value. The procedure considers the confidence level of the indexes by means of fuzzy set theory, which enables expression of the vulnerability in linguistic terms (e.g., ‘high’ or ‘low’), as well as through a fragility curve. In this paper, a web toolbox based on the Vulnus procedure, namely, Vulnus Web, is proposed. It enables the central archiving of data, improved interaction with the program code and a wider dissemination. The new procedure was applied to a masonry building hit by the Central Italy 2016 earthquake; both the vulnerability level assessed numerically and the damage prediction were in good accordance with the actual seismic performance of the building.

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Life-Cycle Energy Assessment in Buildings: Framework, Approaches, and Case Studies

Cited by 15 publications

References 22 publications

Multi‐objective assessment of a DAPTC based on 4E analysis: Water‐energy‐environment nexus

Multi‐objective assessment of a DAPTC based on 4E analysis: Water‐energy‐environment nexus

A Review of Structures and Performance of Ternary Blends of Rice Husk Ash and Some Wastes in Concrete

Vulnus Web: A Web-Based Procedure for the Seismic Vulnerability Assessment of Masonry Buildings

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