Cleaner energy scenarios for building clusters in campus areas based on the Rational Exergy Management Model

Kılkış, Şiir; Wang, Cong; Björk, Folke; Martinac, Ivo

doi:10.1016/j.jclepro.2016.10.126

Cited by 20 publications

(8 citation statements)

References 32 publications

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“…In addition, campus and urban systems can be better integrated, including through the management of energy quality (Björk et al, 2013). Campuses can contribute to city CO 2 mitigation and sustainability plans based on cleaner energy supply structures (Kılkış et al, 2017). The creativity of the students can be stimulated based on participatory approaches (Kılkış, 2015).…”

Section: Discussionmentioning

confidence: 99%

Comparative analyses of sustainable campuses as living laboratories for managing environmental quality

Kılkış

2017

MEQ

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Purpose Despite an emerging trend in the higher education sector toward sustainable campuses, comparative analyses that span multiple themes across multiple campuses are still limited. The purpose of this paper is to reduce such a gap by comparing universities that are members of the International Sustainable Campus Network across themes that are related to environmental quality. Design/methodology/approach In total, 34 universities are included in the sample. Indicators are systematically reviewed and clustered into ten themes. Common indicators (CIs) are identified in seven themes for at least seven and at most 20 campuses. At the absence of CIs, the given theme is assessed based on the measures applied. The results indicate the average levels of performance in the sample and/or the scope of the measures that are undertaken. Findings According to related values, an average campus spent 233,402 MWh of energy in buildings, 838,317 m3 of water on campus, generated 4,442 tonnes of waste, and emitted 75,354 tonnes of CO2 emissions. The average recycling rate was 50 percent, the average single occupancy vehicle rate in campus commuting was 34 percent, and on average, there were 152 sustainability-oriented courses. Best practices from the measures included energy audits for data centers, retrofit of water intense laboratories, and on-site renewable energy projects. Originality/value In addition, a unified monitoring framework is proposed to improve subsequent comparative analyses of campuses. Universities must focus on the use of the campus as a living laboratory to guide society toward a more sustainable future.

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Section: Discussionmentioning

confidence: 99%

Comparative analyses of sustainable campuses as living laboratories for managing environmental quality

Kılkış

2017

MEQ

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“…Electrical energy is a high‐grade energy and 1 W of electrical power is similar to 1 W of electrical exergy. However, a given amount of thermal energy is always lower than its exergy especially at low temperature application 43 …”

Section: Methodsmentioning

confidence: 99%

“…However, a given amount of thermal energy is always lower than its exergy especially at low temperature application. 43 The exergy efficiency for NCPV/T-TEG configuration can be calculated by Equation ( 7) 11 :…”

Section: Overall Exergy Analysismentioning

confidence: 99%

Energy performance investigation of nanofluid‐based concentrated photovoltaic / thermal‐thermoelectric generator hybrid system

et al. 2021

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Nanofluid can be used in a CPV/T solar collector to boost electrical and thermal performances as this technology has drawn great attention from researchers over the last decades. In a CPV/T system, the amount of collected heat could be significantly higher than the amount of electrical power. Combining thermoelectric generator (TEG) and nanofluid-based CPV/T system may result in better electrical performance than CPV/T system alone. In the present work, a nanofluid-based CPV/T-TEG hybrid system with a cooling channel was designed and tested, and the obtained performance was compared with conventional cooling methods [ie, natural cooling (CPV/TEG) and water cooling (WCPV/T-TEG) methods]. At the optimum value of solar concentration, C = 14.6, the electrical performance of the nanofluid-based concentrated photovoltaic/thermal-thermoelectric generator (NCPV/T-TEG) configuration was found to be 89% higher than the standard PV modules. For the same

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“…This necessitates that energy resources, including renewable energy, are allocated with the priority of ensuring better compatibility in exergy levels to streamline primary energy spending [34]. Among others, REMM has been applied to districts [35,36], university campuses [37], airports [38] and dairy farms [39] while applications that involve hydrogen production based on renewable energy and its utilization within the urban context remain to be analyzed as a further basis for the present study.…”

Section: Aims Of the Research Workmentioning

confidence: 99%

Hydrogen Economy Model for Nearly Net-Zero Cities with Exergy Rationale and Energy-Water Nexus

Kılkış

2018

Energies

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Abstract:The energy base of urban settlements requires greater integration of renewable energy sources. This study presents a "hydrogen city" model with two cycles at the district and building levels. The main cycle comprises of hydrogen gas production, hydrogen storage, and a hydrogen distribution network. The electrolysis of water is based on surplus power from wind turbines and third-generation solar photovoltaic thermal panels. Hydrogen is then used in central fuel cells to meet the power demand of urban infrastructure. Hydrogen-enriched biogas that is generated from city wastes supplements this approach. The second cycle is the hydrogen flow in each low-exergy building that is connected to the hydrogen distribution network to supply domestic fuel cells. Make-up water for fuel cells includes treated wastewater to complete an energy-water nexus. The analyses are supported by exergy-based evaluation metrics. The Rational Exergy Management Efficiency of the hydrogen city model can reach 0.80, which is above the value of conventional district energy systems, and represents related advantages for CO 2 emission reductions. The option of incorporating low-enthalpy geothermal energy resources at about 80 • C to support the model is evaluated. The hydrogen city model is applied to a new settlement area with an expected 200,000 inhabitants to find that the proposed model can enable a nearly net-zero exergy district status. The results have implications for settlements using hydrogen energy towards meeting net-zero targets.

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Cleaner energy scenarios for building clusters in campus areas based on the Rational Exergy Management Model

Cited by 20 publications

References 32 publications

Comparative analyses of sustainable campuses as living laboratories for managing environmental quality

Comparative analyses of sustainable campuses as living laboratories for managing environmental quality

Energy performance investigation of nanofluid‐based concentrated photovoltaic / thermal‐thermoelectric generator hybrid system

Hydrogen Economy Model for Nearly Net-Zero Cities with Exergy Rationale and Energy-Water Nexus

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