Technological development, the increasing use of modern technologies, and urban growth have caused energy demand to escalate annually. Such energy demand directly affects increasing carbon dioxide emissions, which could cause global warming. Buildings are accountable for 19% of global greenhouse gas (GHG) emissions and 30% of global energy consumption, significantly contributing to global warming. Therefore, energy transition in the building sector is imperative to limit global warming and reduce substantially such emissions. The research objectives include reviewing the literature on the obstacles to applying the zero-energy building concept in high buildings and analyzing the feasibility of current methods to achieve zero energy in high buildings and the urban infrastructure of dense and non-dense urban areas. The research results confirmed those of previous studies that the taller the building increases, the more complex it becomes to achieve a zero-energy performance due to obstacles such as initial cost, operation cost, and adequate building site/roof area. The research concluded that the transition to zero-energy systems could involve different combinations of energy sources/systems in various parts of the world, with no single best solution (e.g., a zero-energy building as an objective can be achieved in buildings in dense and non-dense urban zones using onsite or offsite renewable power plants). The research recommends public electricity grids as a pragmatic solution to fulfill the needs of buildings that are difficult to supply with onsite photovoltaic (PV) energy production systems, such as high buildings or the homes of poor people, in addition to supplying infrastructure networks with their electricity needs, such as public and private vehicles as well as street and urban spaces lighting systems in urban zones.

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Analytical Study to Examine Opportunities for Applying Zero-Energy Concepts in High Buildings in Dense and Non-dense Urban Areas

  • Shukri M. Elbellahy

摘要

Technological development, the increasing use of modern technologies, and urban growth have caused energy demand to escalate annually. Such energy demand directly affects increasing carbon dioxide emissions, which could cause global warming. Buildings are accountable for 19% of global greenhouse gas (GHG) emissions and 30% of global energy consumption, significantly contributing to global warming. Therefore, energy transition in the building sector is imperative to limit global warming and reduce substantially such emissions. The research objectives include reviewing the literature on the obstacles to applying the zero-energy building concept in high buildings and analyzing the feasibility of current methods to achieve zero energy in high buildings and the urban infrastructure of dense and non-dense urban areas. The research results confirmed those of previous studies that the taller the building increases, the more complex it becomes to achieve a zero-energy performance due to obstacles such as initial cost, operation cost, and adequate building site/roof area. The research concluded that the transition to zero-energy systems could involve different combinations of energy sources/systems in various parts of the world, with no single best solution (e.g., a zero-energy building as an objective can be achieved in buildings in dense and non-dense urban zones using onsite or offsite renewable power plants). The research recommends public electricity grids as a pragmatic solution to fulfill the needs of buildings that are difficult to supply with onsite photovoltaic (PV) energy production systems, such as high buildings or the homes of poor people, in addition to supplying infrastructure networks with their electricity needs, such as public and private vehicles as well as street and urban spaces lighting systems in urban zones.