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Publication Metadata only Transition to a new era with light-based hydrogen production for a carbon-free society: An overview(PERGAMON-ELSEVIER SCIENCE LTD, 2019) Acar, Canan; Bicer, Yusuf; Demir, Murat Emre; Dincer, Ibrahim; Bahcesehir University; Qatar Foundation (QF); Hamad Bin Khalifa University-Qatar; Ontario Tech University; Yildiz Technical UniversityThis study discusses the transitional solutions with light-based hydrogen production for a carbon-free or low-carbon future. With a particular focus on the cutting-edge research activities at the Clean Energy Research Laboratory (CERL), some light-based innovative hydrogen production systems are discussed thoroughly. At the CERL, the main motivation is to achieve sustainability via a 3S approach, which is the source, system, and service. Therefore, clean, efficient, affordable, and reliable hydrogen production is seen as the first step towards the transition to a carbon-free future. With this goal in mind, the initial research activities at the CERL cover PV-electrolysis, photocatalysis, and photoelectrochemical cells for sustainable light-based hydrogen production. In the following steps, towards hybridization and system integration, various effective multigeneration systems are designed, built, and tested at the CERL. These multigeneration systems not only enhance the solar spectrum utilization, but also provide additional valuable system products such as electricity, heat, Cl-2, NaOH, clean water, and ammonia. Better resource utilization decreases system costs, enhances efficiencies, and certainly lowers the negative environmental footprint. The innovative hydrogen production systems designed at the CERL do not require additional chemicals like most of the photocatalytic systems, and as a result, they have less damage to the limited clean water resources of our planet. Besides, at the CERL, numerous novel systems are developed and tested to produce hydrogen from wastewaters. All of these systems are capable of producing outputs that are widely needed across the globe, which highlights the importance of the research currently taken place at the CERL. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.Publication Metadata only Targeted use of LEDs in improvement of production efficiency through phytochemical enrichment(WILEY, 2017) Taulavuori, Erja; Taulavuori, Kari; Holopainen, Jarmo K.; Julkunen-Tiitto, Riitta; Acar, Canan; Dincer, Ibrahim; University of Oulu; University of Eastern Finland; Bahcesehir University; Ontario Tech UniversityBased on available literature, ecology and economy of light emitting diode (LED) lights in plant foods production were assessed and compared to high pressure sodium (HPS) and compact fluorescent light (CFL) lamps. The assessment summarises that LEDs are superior compared to other lamp types. LEDs are ideal in luminous efficiency, life span and electricity usage. Mercury, carbon dioxide and heat emissions are also lowest in comparison to HPS and CFL lamps. This indicates that LEDs are indeed economic and eco-friendly lighting devices. The present review indicates also that LEDs have many practical benefits compared to other lamp types. In addition, they are applicable in many purposes in plant foods production. The main focus of the review is the targeted use of LEDs in order to enrich phytochemicals in plants. This is an expedient to massive improvement in production efficiency, since it diminishes the number of plants per phytochemical unit. Consequently, any other production costs (e.g. growing space, water, nutrient and transport) may be reduced markedly. Finally, 24 research articles published between 2013 and 2017 were reviewed for targeted use of LEDs in the specific, i.e. blue range (400-500nm) of spectrum. The articles indicate that blue light is efficient in enhancing the accumulation of health beneficial phytochemicals in various species. The finding is important for global food production. (c) 2017 Society of Chemical IndustryPublication Metadata only Innovation in hydrogen production(PERGAMON-ELSEVIER SCIENCE LTD, 2017) Dincer, Ibrahim; Acar, Canan; Ontario Tech University; Yildiz Technical University; Bahcesehir UniversityIn this study, the critical perspectives of innovation are introduced for specifically for hydrogen production under a new concept (so-called: 18S concept), covering source, system, service, scope, staff, scale-up, safety, scheme, sector, solution, stakeholder, standardization, subsidy, stimulation, structure, strategy, support and sustainability. The roles of these specific conceptual items are discussed, and their importance is highlighted. Furthermore, the innovative methods in hydrogen production are assessed by using a ranking method for comparison and evaluation purposes. The results show that renewable sources, particularly hydro, geothermal and solar show a unique potential to support these innovative H-2 production systems. When the H-2 production systems are compared, the ones supporting heat recovery (thermal) and the photonic based options show better performance in terms of emissions, cost and efficiency. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.Publication Metadata only Review and evaluation of hydrogen production options for better environment(ELSEVIER SCI LTD, 2019) Acar, Canan; Dincer, Ibrahim; Bahcesehir University; Ontario Tech University; Yildiz Technical UniversityIn this study, different hydrogen production sources and systems and some hydrogen storage options are comparatively investigated in detail. Economic, environmental, social, and technical performance and reliability of the selected options are compared in detail. Biomass, geothermal, hydro, nuclear, solar, and wind are the selected hydrogen production sources, biological, thermal, photonic, and electrical are the selected hydrogen production methods, and chemical hydrides, compressed gas, cryogenic liquid, metal hydrides, and nanomaterials are the selected hydrogen storage systems. In addition, some case studies and basic research needs to enhance the performance of hydrogen energy systems and to tackle the major challenges of the hydrogen economy are provided. The results show that solar has the highest environmental performance (8/10) and the total average ranking (7.40/10), nuclear has the lowest environmental performance (3/10), and geothermal has the lowest total average ranking (4/10/10) among selected hydrogen production sources. Hydrogen production systems' comparison indicates that photonic options have the highest environmental performance ranking (8/10), thermal options have the lowest environmental performance ranking (5/10), electrical options have the highest average ranking (7.60/10), and biological options have the lowest average ranking (4.80/10). (C) 2019 Elsevier Ltd. All rights reserved.Publication Metadata only A comprehensive evaluation of energy storage options for better sustainability(WILEY, 2018) Acar, Canan; Bahcesehir UniversityDue to ever increasing global energy demand and the limited nature of fossil fuel reserves, there has been tremendous research and development studies in the literature, focusing on alternative and clean energy resources and systems. Renewables are the promising choice when it comes to addressing some critical energy issues such as climate change and energy security. However, renewables have intermittent and discontinuous supplies, hence, they need to be stored in ways that are affordable, reliable, flexible, clean, safe, and efficient. As a result, energy storage is becoming a crucial step to build innovative energy systems for a sustainable future. Energy can be stored in many forms, from electrical to chemical (eg, hydrogen), or electrochemical, thermal, electromagnetic, etc. Each form consists of different technologies, some of which are already commercially mature while others are at early research and development stages. Each of these options can be tailored to meet different end users' needs at different scales. Therefore, this study aims to conduct a comprehensive review on the most recent status of energy storage options, along with the requirements of various end users, and characteristics of smart energy storage systems. The main objective is to summarize the performance evaluation statuses of mechanical, electrochemical, chemical, thermal, and electromagnetic energy storage technologies. The selected performance measures are capacity flexibility, energy arbitrage, system balancing, congestion management, environmental impact, and power quality. In the end, some key recommendations and future directions for energy storage systems are provided.Publication Metadata only Innovation in hydrogen production(Elsevier Ltd, 2017) Dincer, I.; Acar, Canan; Dincer, I., Clean Energy Research Laboratory, Ontario Tech University, Oshawa, Canada, Faculty of Mechanical Engineering, Yıldız Teknik Üniversitesi, Istanbul, Turkey; Acar, Canan, Faculty of Engineering and Natural Sciences, Bahçeşehir Üniversitesi, Istanbul, TurkeyIn this study, the critical perspectives of innovation are introduced for specifically for hydrogen production under a new concept (so-called: 18S concept), covering source, system, service, scope, staff, scale-up, safety, scheme, sector, solution, stakeholder, standardization, subsidy, stimulation, structure, strategy, support and sustainability. The roles of these specific conceptual items are discussed, and their importance is highlighted. Furthermore, the innovative methods in hydrogen production are assessed by using a ranking method for comparison and evaluation purposes. The results show that renewable sources, particularly hydro, geothermal and solar show a unique potential to support these innovative H2 production systems. When the H2 production systems are compared, the ones supporting heat recovery (thermal) and the photonic based options show better performance in terms of emissions, cost and efficiency. © 2017 Elsevier B.V., All rights reserved.Publication Metadata only Targeted use of LEDs in improvement of production efficiency through phytochemical enrichment(John Wiley and Sons Ltd vgorayska@wiley.com Southern Gate Chichester, West Sussex PO19 8SQ, 2017) Taulavuori, Erja B.; Taulavuori, Kari; Holopainen, Jarmo K.; Julkunen-Tiitto, Riita; Acar, Canan; Dincer, I.; Taulavuori, Erja B., Department of Ecology and Genetics, Oulun Yliopisto, Oulu, Finland; Taulavuori, Kari, Department of Ecology and Genetics, Oulun Yliopisto, Oulu, Finland; Holopainen, Jarmo K., Department of Environmental and Biological Sciences, Itä-Suomen yliopisto, Kuopio, Finland; Julkunen-Tiitto, Riita, Department of Environmental and Biological Sciences, Itä-Suomen yliopisto, Kuopio, Finland; Acar, Canan, Faculty of Engineering and Natural Sciences, Bahçeşehir Üniversitesi, Istanbul, Turkey; Dincer, I., Clean Energy Research Laboratory, Ontario Tech University, Oshawa, CanadaBased on available literature, ecology and economy of light emitting diode (LED) lights in plant foods production were assessed and compared to high pressure sodium (HPS) and compact fluorescent light (CFL) lamps. The assessment summarises that LEDs are superior compared to other lamp types. LEDs are ideal in luminous efficiency, life span and electricity usage. Mercury, carbon dioxide and heat emissions are also lowest in comparison to HPS and CFL lamps. This indicates that LEDs are indeed economic and eco-friendly lighting devices. The present review indicates also that LEDs have many practical benefits compared to other lamp types. In addition, they are applicable in many purposes in plant foods production. The main focus of the review is the targeted use of LEDs in order to enrich phytochemicals in plants. This is an expedient to massive improvement in production efficiency, since it diminishes the number of plants per phytochemical unit. Consequently, any other production costs (e.g. growing space, water, nutrient and transport) may be reduced markedly. Finally, 24 research articles published between 2013 and 2017 were reviewed for targeted use of LEDs in the specific, i.e. blue range (400–500 nm) of spectrum. The articles indicate that blue light is efficient in enhancing the accumulation of health beneficial phytochemicals in various species. The finding is important for global food production. © 2017 Society of Chemical Industry. © 2017 Elsevier B.V., All rights reserved.Publication Metadata only Transition to a new era with light-based hydrogen production for a carbon-free society: An overview(Elsevier Ltd, 2019) Acar, Canan; Bicer, Yusuf; Demir, Murat Emre; Dincer, I.; Acar, Canan, Faculty of Engineering and Natural Sciences, Bahçeşehir Üniversitesi, Istanbul, Turkey, Clean Energy Research Laboratory, Ontario Tech University, Oshawa, Canada; Bicer, Yusuf, Division of Sustainable Development, Hamad Bin Khalifa University, Doha, Qatar, Clean Energy Research Laboratory, Ontario Tech University, Oshawa, Canada; Demir, Murat Emre, Clean Energy Research Laboratory, Ontario Tech University, Oshawa, Canada; Dincer, I., Clean Energy Research Laboratory, Ontario Tech University, Oshawa, Canada, Faculty of Mechanical Engineering, Yıldız Teknik Üniversitesi, Istanbul, TurkeyThis study discusses the transitional solutions with light-based hydrogen production for a carbon-free or low-carbon future. With a particular focus on the cutting-edge research activities at the Clean Energy Research Laboratory (CERL), some light-based innovative hydrogen production systems are discussed thoroughly. At the CERL, the main motivation is to achieve sustainability via a 3S approach, which is the source, system, and service. Therefore, clean, efficient, affordable, and reliable hydrogen production is seen as the first step towards the transition to a carbon-free future. With this goal in mind, the initial research activities at the CERL cover PV-electrolysis, photocatalysis, and photoelectrochemical cells for sustainable light-based hydrogen production. In the following steps, towards hybridization and system integration, various effective multigeneration systems are designed, built, and tested at the CERL. These multigeneration systems not only enhance the solar spectrum utilization, but also provide additional valuable system products such as electricity, heat, Cl2, NaOH, clean water, and ammonia. Better resource utilization decreases system costs, enhances efficiencies, and certainly lowers the negative environmental footprint. The innovative hydrogen production systems designed at the CERL do not require additional chemicals like most of the photocatalytic systems, and as a result, they have less damage to the limited clean water resources of our planet. Besides, at the CERL, numerous novel systems are developed and tested to produce hydrogen from wastewaters. All of these systems are capable of producing outputs that are widely needed across the globe, which highlights the importance of the research currently taken place at the CERL. © 2020 Elsevier B.V., All rights reserved.