Abstract:There is an increased interest in the district-scale energy transition within interdisciplinary research community. Agent-based modelling presents a suitable approach to address variety of questions related to policies, technologies, processes, and the different stakeholder roles that can foster such transition. However, it is a largely complex and versatile methodology which hinders its broader uptake by researchers as well as improved results. This state-of-the-art review focuses on the application of agent-… Show more
“…Active strategies imply the implementation of energy systems, energy optimization, operation, production, distribution storage of energy, and others. These issues are studied in the works of Akhatova et al (2022) -Clear definition corresponding to socioeconomic realities of the Global South incorporated into public policy.…”
This article presents a short literature review (2017-2022) on Zero Energy District (ZED) concept and its related terms - Nearly ZED, NetZED, PED and Zero Energy Community. The scope of these terms was also evaluated and compared among different authors. Conceptual elements shaping up ZED projects were systematized. A brief review on Zero Energy District Concept in tropical countries was provided. One of the purposes of the paper is the recommendation to transfer Zero Energy District concept to realities of the Global South that have a higher level of economic and social vulnerability but at the same time a higher potential for energy production from renewable sources.
“…Active strategies imply the implementation of energy systems, energy optimization, operation, production, distribution storage of energy, and others. These issues are studied in the works of Akhatova et al (2022) -Clear definition corresponding to socioeconomic realities of the Global South incorporated into public policy.…”
This article presents a short literature review (2017-2022) on Zero Energy District (ZED) concept and its related terms - Nearly ZED, NetZED, PED and Zero Energy Community. The scope of these terms was also evaluated and compared among different authors. Conceptual elements shaping up ZED projects were systematized. A brief review on Zero Energy District Concept in tropical countries was provided. One of the purposes of the paper is the recommendation to transfer Zero Energy District concept to realities of the Global South that have a higher level of economic and social vulnerability but at the same time a higher potential for energy production from renewable sources.
“…Entre as estratégias ativas destacam-se os estudos do impacto técnico-econômico, modelagens dos sistemas de produção e distribuição de energia renovável, gestão e armazenamento de energia dos recursos renováveis. Em relação aos aspectos técnicos de engenharia dos Distritos de Balanço Energético Nulo (Zero-Energy Districts) analisam-se sistemas que envolvem diferentes fontes de energia [18] -Água Manutenção, usos de aparelhos de irrigação; descarbonização e aumento de uso de energia elétrica.…”
Neste artigo é apresentada a evolução do conceito de Distrito de Balanço Energético Nulo, termo intitulado em literatura inglesa Zero-Energy District, a partir de revisão bibliográfica em três bases de dados para artigos publicados entre 2017 e 2022. Destacam-se os fatores principais que determinam a emergência dos termos derivados deste conceito: Distrito de Balanço Energético Quase Nulo (Nearly Zero-Energy District), Distrito de Balanço Energético Nulo Líquida (Net Zero-Energy District), Distrito de Balanço Energético Positivo (Positive Energy District), Comunidade de Balanço Energético Nulo (Zero-Energy Community). Como conclusão, aponta-se a necessidade de transferir os conceitos associados aos Distritos de Balanço Energético Nulo e adaptar normas já implantadas em países desenvolvidos a realidade dos países do Sul Global.
“…The actual global shift in energy usage nowadays is towards a decrease in fuel consumption, thereby reducing harmful carbon dioxide emissions. This can be achieved by energy management and renewable energy [1][2][3][4][5][6]. In particular, heat recovery represents a key aspect in the notable growth of energy management efforts [7][8][9][10][11].…”
This paper suggests a heat recovery concept that is based on preheating/precooling the cold/hot fresh outside air by means of the relatively hot/cold exhaust air in winter/summer weather conditions. To investigate the feasibility of such a concept, an experimental setup is established to simulate conditions similar to an All-Air HVAC system. The prototype consists of a 6.7-m3 air-conditioned chamber by means of a split unit of 5.3-kW capacity. The heat recovery module consists of a duct system that is used to reroute the exhaust air from a conditioned chamber to flow through the fin side of a fin-and-tube heat exchanger of crossflow type. At the same time, outside, fresh air is flowing through the tube side of the fin-and-tube heat exchanger. A parametric study is performed to assess the amount of heat that can be recovered by varying the mass flow rates on both the duct and heat exchanger sides. The results show that up to 200 W of power can be saved for an exhaust flow rate of 0.1 kg/s and a fresh, outdoor air flow rate of 0.05 kg/s. Environmentally speaking, this leads to a reduction in production of about 1 tons of CO2 per year when the system operates 24 h/day. From an economic point of view, the system is able to return its price after 1.5 years when it is used 24 h per day during hot days at 196-W thermal recovery, whereas it requires at least 6.3 years when it is used during cold days at a 60-W thermal recovery rate, which, in both cases, represents a duration less than the lifespan of an air conditioner.
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