Towards zero-energy residential complexes in high-density conditions

Abstract

Carbon dioxide is the largest component of the human footprint and one of the major components of all greenhouse gases. The expected increase in population will lead to growth in energy consumption and greenhouse gas emissions. The building industry has the highest potential for reducing greenhouse gas emissions. Therefore, buildings should become not only efficient consumers but also energy producers, not a simple task in dense cities. The paper describes the feasibility and limitations of near zero energy design in highly dense urban conditions. The study was carried out by examination and comparison of various density design, alternatives of an existing urban plot in the coastal climate zone of Israel. Increased dwelling units’ number leads to higher total energy use on the one hand and mutual shading of new high-rise residential buildings on the other. Preserving solar rights for PV systems installation become more complex. The relation between urban density and solar rights in urban design, energy consumption and energy generation within plot borders and their implications are presented and discussed in the paper.

Optimal design of residential balcony based on environmental benefit: A case study in hot summer and cold winter area of China

“…23 However, it is unreasonable to only consider operational energy consumption without considering the design investment’s energy consumption and carbon emissions. 24,25 Thus, emphasizing the importance of applying life cycle assessment to decision-making environmental performance indicator investment.…”

Distrito de balanço energético nulo: evolução dos elementos conceituais

“…Como estratégias passivas dirigidas à constituição de Distritos de Balanço Energético Nulo (Zero-Energy Districts), são observados também aspectos pré-tecnológicos que impactam precocemente na produção e no consumo de energia dos edifícios como clima e morfologia urbana. O clima é estudado a partir de variáveis de temperatura, desenho de vento e ganhos solares [15][16] [17]. A morfologia urbana com sua ENTAC2022 -Ambiente Construído: Resiliente e Sustentável geometria, orientação, altura dos edifícios, densidade urbana, idade dos edifícios é um segundo fator importante no desempenho de Distritos de Balanço Energético Nulo (Zero-Energy Districts) [15].…”

“…Podem, ainda, ser citados aspectos intercruzados, relativos à temática das estratégias passivas ou bioclimáticas [16] como efeitos de ilhas de calor, canhão urbano (urban canyon), efeito de Inter-construção (interbuilding effect) [6] ou sombreamento mútuo, materiais de envoltória e de fachada e layout otimizado para consumo de energia. Aspecto importante foi definido no trabalho de [17], tudo no final contornando ao termo "direitos à energia solar na cidade". Por último, vários estudos são dedicados ao retrofit energético, [15] como exemplo, ou seja, otimização das características térmicas de envoltória dos edifícios.…”

Improving hosts’ pre-interaction capabilities for sustainability based on Airbnb host content emergence characteristics

“…20 Sharing accommodation is friendly for a long-term sustainable built environment, 21 which would meet travellers’ accommodation needs and also solve the anxiety about environmental protection, reduce the production volume of new products and raw material consumption and change the consumption concept. 22,23 Sharing accommodation is effective and sustainable, and the platform achieves the goal of ‘making the best use of everything’. 24 Although sustainable development is the original intention of sharing economy, the profit-seeking nature of capital alienates the concept of sharing economy 25 ; a large number of platforms have not realized their economic value, resulting in the lack of value in the sustainable economic model, and under the control of capital logic, platforms compete for capital in a disorderly manner.…”