Greenhouse gas emissions associated with two air-conditioning systems for a university building

Garcia, Lígia da Costa; Martins, Dener Delmiro; Barbosa, Rafaela Ramos; Carvalho, Mónica

doi:10.1016/j.envc.2021.100371

Cited by 3 publications

(3 citation statements)

References 17 publications

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“…The literature search generated 97 documents that touch on the theme of SDG12 concerning HEIs and sustainable cities. Studies deal with academic studies or community projects carried out by universities and their interception with SDGs (Gebremedhin et al, 2019;Whitcraft et al, 2019;Elsamadony et al, 2022;Paunglad, 2022), consumer studies (Corsini et al, 2019;Longoria et al, 2021;Lin et al, 2022;Siddiqua et al, 2022) or design, development, and use of sustainable materials, primarily biochemical in nature [see for example (Tao et al, 2018;Shi et al, 2021;Yeerum et al, 2022)] and using the Life Cycle Assessment (LCA) methodology (Garcia et al, 2021;Adebisi and Babatunde, 2022). In Alvarez-Risco et al (2021) a study with higher education students was conducted in which they shared their SDGs research interests.…”

Section: Literature Reviewmentioning

confidence: 99%

“…Other topics that have been reported closer to the theme of consumption and production and sustainable cities and communities are supply chains (Lazar et al, 2021), built environment or green building (Wen et al, 2020;Lopez Duarte, 2021), smart affordable and clean energy production and consumption (de Miguel Ramos and Laurenti, 2020; Kermani et al, 2021), knowledge hubs (Walentowski et al, 2020), and use of natural resources (Kiwfo et al, 2021), circular economy and e-waste disposal and awareness (Siddiqua et al, 2022). Under the energy consumption topic (Garcia et al, 2021), compared the greenhouse emissions associated with conventional (346,569 kg CO 2 eq/year) and solar absorption (144,452 CO 2 eq/year) cooling systems installed at a university building, suggesting that new technology should be used in universities to decrease energy consumption patterns. In this regard, digitalization, Information and Communication Technologies (ICT), and artificial intelligence (AI) can contribute to more intelligent use of energy (Parks and Wallsten, 2020;Choi et al, 2022).…”

Section: Literature Reviewmentioning

confidence: 99%

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The implementation of SDG12 in and from higher education institutions: universities as laboratories for generating sustainable cities

Martínez-Acosta

Vázquez-Villegas

Mejía‐Manzano

et al. 2023

Front. Sustain. Cities

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IntroductionIt is known that the world is facing and will face significant sustainability challenges. Sustainable Development Goal 12 (SDG12), responsible consumption and production, is one of the most relevant SDGs for building Sustainable Cities. This study is based on the analysis of the implementation of SDG12 in cities, starting from universities as laboratories or first examples of sustainability.MethodsThe study was carried out through a multilevel scale approach. A systematic review of the literature (global scale) of the last 5 years (2018–2022) was conducted. An analysis of the program and the initiatives of a Higher Education Institution (Tecnologico de Monterrey) is presented (local scale). Finally, a survey was applied to Faculty at this University (micro-scale).ResultsThe systematic review indicated that the main themes or aspects addressed in SDG12 by higher education institutions were sustainable food, supply chains, community, infrastructure, technology, policies, energy consumption, the collaborative economy, smart cities, and curricula. The local scale analysis highlighted the Distrito Tec project, 37 institutional initiatives, and 26 courses directly related to SDG12. The survey showed that 8% of Faculty considered SDG12 the most important of the SDGs and stated that this goal is necessary to reduce environmental impacts. As the most significant impact that Universities can have on SDG12, 52% of the Faculty consider that Universities should become living labs in the transition toward sustainable cities, followed by 36% who think it would be better to implement operational facilities.DiscussionThe diverse contributions of the HEIs at the three scales were classified into six categories: culture, mitigation, adaptation, education, research, and outreach. The study indicates that SDG 12 has been achieved by universities in different ways, which overlaps widely with the performance of other SDGs. Results demonstrate that following a multistakeholder approach, international collaborations between HEIs can foster technology-driven multi-disciplinary research projects to consolidate sustainable cities. Building capacity to accelerate the transition of universities into urban living labs will promote climate action among the students who enroll every year.

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Section: Literature Reviewmentioning

confidence: 99%

Section: Literature Reviewmentioning

confidence: 99%

The implementation of SDG12 in and from higher education institutions: universities as laboratories for generating sustainable cities

Martínez-Acosta

Vázquez-Villegas

Mejía‐Manzano

et al. 2023

Front. Sustain. Cities

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“…Regarding energy use by type, campus energy consumption consists primarily of electricity, gasoline, and natural gas [4]. Campus energy consumption is dominated by building usage, and air conditioning related carbon emissions constitute a substantial proportion of total campus carbon emissions [5]. In the future, following the electrification of vehicles, on-board batteries can also play a constructive role in grid energy storage and peak load shaving [6].…”

mentioning

confidence: 99%

Optimal Dispatch of Low-carbon Campus Power System Considering Flexible Loads and Green Power

He,

Jin,

Jia

et al. 2024

Preprint

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In recent years, energy consumption in universities and colleges has accounted for about 10% of the total energy consumption of Chinese society. In order to achieve the goal of carbon peaking and carbon neutrality, it is a major trend to build a new, cleaner campus power system. At the same time, fully exploiting the flexibility of campus loads is also conducive to the accommodation of renewable energy. This paper provides an optimal dispatch approach to achieve lowcarbon in a campus smart grid. Firstly, a green electricity trading mechanism based on power-load matching was proposed. Secondly, flexible load models in the campus for electric vehicles, air conditioners, energy storage, and other loads were established. Thirdly, a day-ahead renewable energy power prediction method based on weather forecast data for a campus wind-solar-storage combined operation power system is proposed. Finally, by means of load regulation measures, such as flexible class schedule, an optimal dispatch approach for the lowcarbon campus power system was established. The case study shows that adopting load regulation measures can effectively promote the consumption of renewable energy sources and support the development of the lowcarbon campus.

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Environmental Performance Evaluation for a Small Scale Trigeneration System

Neagu

Gavrilaș

Tirsu³

et al. 2021

Bulletin of the Polytechnic Institute of Iași. Electrical Engineering, Power Engineering, Electronics Section

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The modern buildings must have very high standards and require highly efficient energy supply systems due to space limitations for renewable installations. Electricity and thermal energy can be produced simultaneously with a photovoltaic-thermal (PVT) system. In the paper, an innovative concept of PVT system for a hospital is studied. PVT collectors serve as both a heat source and a heat sink for a reversible heat pump in the examined system. Due to the reduced electricity consumption from the network for heat rejection, the overall efficiency was improved by using a reversible water-to-water heat pump as heat and cold source compared to a conventional solar cooling system. Primary energy savings can be achieved with a maximum utilization of PV for electricity, heating and cooling (as air conditioning). The paper presents an original methodology for determining the environmental impact of the real PVT operation. The case study shows that for a real 4kWp PVT, the yearly energy savings reduce the greenhouse gas (GHG) emissions with 281.8 kg/year for SO2 and 152.4 for CO2.

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Greenhouse gas emissions associated with two air-conditioning systems for a university building

Cited by 3 publications

References 17 publications

The implementation of SDG12 in and from higher education institutions: universities as laboratories for generating sustainable cities

The implementation of SDG12 in and from higher education institutions: universities as laboratories for generating sustainable cities

Optimal Dispatch of Low-carbon Campus Power System Considering Flexible Loads and Green Power

Environmental Performance Evaluation for a Small Scale Trigeneration System

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