Building energy: a review on consumptions, policies, rating schemes and standards

Lu, Mengxue; Lai, Joseph H.K.

doi:10.1016/j.egypro.2019.01.899

Cited by 64 publications

(24 citation statements)

References 2 publications

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“…The building industry across the world is pursuing sustainable development in its response to the growing energy and environmental challenges (Lu & Lai, 2019;Nahid et al 2018;Sadiq;Khan and Asif 2017). The sustainability drive is being propelled by ever stringent building regulations requiring improved energy efficiency and environmental performance.…”

Section: Conclusion and Discussionmentioning

confidence: 99%

An empirical study on life cycle assessment of double-glazed aluminium-clad timber windows

Asif

2019

IJBPA

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Purpose Life cycle assessment (LCA) is a useful tool to determine the environmental performance of materials and products. The purpose of this paper is to undertake the LCA of double-glazed aluminium-clad timber windows in order to determine their environmental performance. Design/methodology/approach The scope of the LCA study covers the production and the use of windows over a 30-year life span. The LCA exercise has been carried out by auditing the materials and processes involved in the making of the windows. Windows production facilities were visited to investigate the respective quantities and embodied energy of the major constituting materials, i.e. timber, aluminium, glass, infill gases and auxiliary components. The main processes involved, i.e. powder coating of aluminium cladding profiles, glazing unit production and window assembly, were also examined. SimaPro software was used to calculate the environmental impacts associated with the windows for three types of glazing infills: Argon (Ar), Krypton (Kr) and Xenon (Xe). Findings Embodied energy of a standard sized (1.2 m×1.2 m) double-glazed aluminium-clad timber window is found to be 899, 1,402 and 5,400 MJ for Argon (Ar), Krypton (Kr) and Xenon (Xe) infill gases, respectively. It is also found that an Argon-filled window can lose 95,130 kWh of energy resulting into over 37,000 kg of CO2 emissions. Originality/value Besides carrying value for research community, the findings of this study can help the building and construction industry adopt windows that are energy-efficient and environmentally less burdensome. It can also help the concerned legislative bodied.

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Section: Conclusion and Discussionmentioning

confidence: 99%

An empirical study on life cycle assessment of double-glazed aluminium-clad timber windows

Asif

2019

IJBPA

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“…In this study, a worse case was considered in which the remaining radiant energy from the sun was only transferred to the inside of the building. Consequently, the net annual actual energy consumption in buildings was determined by the difference between the annual energy consumption (E i ) and renewable energy (Es i,t ) as shown in Equation (1).…”

Section: Energy Analysismentioning

confidence: 99%

“…Energy consumption during economic development is necessary because most production processes must use energy. Therefore, the establishment of energy policies is an important issue affecting each country's economy [1]. Currently, countries around the world have been paying attention to a combination of energy efficiency solutions and the use of renewable energy, thereby mitigating environmental impacts.…”

Section: Introductionmentioning

confidence: 99%

Building a Decision-Making Support Framework for Installing Solar Panels on Vertical Glazing Façades of the Building Based on the Life Cycle Assessment and Environmental Benefit Analysis

et al. 2020

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Glazing is considered as a preferred solution for the buildability, aesthetic, and comfort of commercial buildings since glass cover can protect occupants from external environmental conditions, ensure the light transmission, and provide view and ventilation. At the same time, in the context of climate change and global warming, the use of renewable solar energy, such as solar and wind power, are encouraged to be utilized. Specifically, solar energy has become a renewable energy source that is clean and endless, at reasonable cost, to contribute to energy security as well as ensure sustainable development. Therefore, the study proposes a method for supporting the decision making in installing solar panels on vertical glazing façades of the building in the worst case that the remaining radiant energy from the sun was only transferred to the inside of the building. The Life Cycle Assessment and the Life Cycle Costing methodologies are applied to consider both environmental and economic aspects. The proposed method can (1) minimize the project cost (including initial investment cost and operation cost) during the building lifetime; (2) analyze the optimal budget to minimize the total life-cycle cost of the building over its lifespan and maximize the renewable energy generated from the sunlight entering buildings in different directions. The results show that with different initial investments, the investor will have a corresponding solution for choosing an optimal installation ratio for each type of glass combined with the installation ratio of solar panels on the façades to reach the optimal energy efficiency as well as environmental performance. This study is beneficial for investors in selecting energy-saving solutions in office buildings in the beginning phase of the project life cycle.

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“…Cities and energy play a key role in solving the environmental crisis [1], and building energy efficiency has received a widespread interest. More than 1/3 of the total global energy consumption can be attributed to the building and construction sectors [2]. According to the research report released by CABEE (China Association of Building Energy Efficiency) in 2018, building energy consumption is 20.6% of the country's total energy consumption, statistical data also shows that public buildings and urban residential buildings account for the two highest proportions of building energy consumption, each with a percentage of 38% [3].…”

Section: Introductionmentioning

confidence: 99%

Many-Objective Optimization Design of a Public Building for Energy, Daylighting and Cost Performance Improvement

2020

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The energy performance of buildings especially public buildings needs to be optimized together with environmental, social and cost performance, which can be achieved by the multiobjective optimization method. The traditional building performance simulation (BPS) based multiobjective optimization is time-consuming and inefficient. Practical projects of complex public building design usually involve many-objective optimization problems in which more than three objectives are considered. Using BPS based multiobjective optimization is not sufficient to solve this kind of design problem. This paper aims to propose an artificial neural network (ANN) based many-objective optimization design method, an architect-friendly integrated workflow has been implemented. The proposed method has been applied on a public library building in Changchun city of China to optimize its Energy Use Intensity (EUI), Spatial Daylight Autonomy (sDA), Useful Daylight Illuminance (UDI) and Building Envelope Cost (BEC). The optimization process has obtained 176 non-dominated solutions. By adopting the selected relative optimal solutions, 1.6×105–2.1×105 kWh energy can be saved per year; sDA value and UDI value can be increased by 8.1%–11.0% and 4.3%–4.7% respectively; BEC can be reduced by ¥1.2×105–2.1×105 ($1.7×104–3.0×104). The optimization time has been greatly shortened in this method and the whole process is highly efficient without manual data conversion between different platforms.

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Building energy: a review on consumptions, policies, rating schemes and standards

Cited by 64 publications

References 2 publications

An empirical study on life cycle assessment of double-glazed aluminium-clad timber windows

An empirical study on life cycle assessment of double-glazed aluminium-clad timber windows

Building a Decision-Making Support Framework for Installing Solar Panels on Vertical Glazing Façades of the Building Based on the Life Cycle Assessment and Environmental Benefit Analysis

Many-Objective Optimization Design of a Public Building for Energy, Daylighting and Cost Performance Improvement

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