A state-of-art review of retrofit interventions in buildings towards nearly zero energy level

Rabani, Mehrdad; Madessa, Habtamu Bayera; Nord, Nataša

doi:10.1016/j.egypro.2017.09.534

Cited by 49 publications

(26 citation statements)

References 32 publications

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“…However, some of these indicators often contradict in principle. A review of retrofit technologies suggested that less cost investment is required to retrofit building services and systems while achieving more environmental benefits than using renewable energy technologies [11]. Furthermore, towards an optimum retrofit intervention process, some conflict of interest has been identified such as, energy use improvement against architectural quality [12].…”

Section: Retrofit Interventions and The Key Indicators In Hot Hummentioning

confidence: 99%

A Review of Retrofit Interventions for Residential Buildings in Hot Humid Climates

Ayodele¹,

Taki²,

Oyinlola³

et al. 2020

IJESD

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Buildings consume 40% of resources around the world, low energy building is fast becoming a major component of sustainable development. However, limiting the concept of low energy buildings to new builds will only undermine its effects and benefits as there are numerous existing buildings that consume uneconomical energy resources irrespective of how energy efficient the new ones are. Therefore, retrofit interventions to existing buildings is important in decreasing resource consumption and increasing energy efficiency. Some various retrofit interventions already exist towards reducing energy consumption in residential buildings but deciding on a specific retrofit intervention needs assiduous consideration. Hence, this paper focuses on the review of retrofit interventions and their energy performances. It was found amongst others that clay bricks, sand line, and pre-fabricated walls consume less energy than concrete bricks by 16%, 23%, and 25% respectively. Electrochromic glazing system with no shading device was also found to have reduced heat gains by 53%-59% in winter and summer. It was concluded that further research would benefit from the combination of the various interventions to create pathways for building retrofit in hot humid climate, the pathways can be tested with a dynamic thermal simulation software for energy performance.Index Terms-Retrofit interventions, hot humid climate, low energy, energy performance.

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Section: Retrofit Interventions and The Key Indicators In Hot Hummentioning

confidence: 99%

A Review of Retrofit Interventions for Residential Buildings in Hot Humid Climates

Ayodele¹,

Taki²,

Oyinlola³

et al. 2020

IJESD

View full text Add to dashboard Cite

show abstract

“…λ ij . Therefore, the H matrices for the models presented in Figure 4a,b are as shown in (4) and 5, respectively.…”

Section: System Generation Reliability Modelmentioning

confidence: 99%

“…Applying this criterion given in (4) and 5, the probabilities of being in each state are as presented in (7) and 8, respectively. case 2 :…”

Section: System Generation Reliability Modelmentioning

confidence: 99%

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Optimal Distribution of Renewable Energy Systems Considering Aging and Long-Term Weather Effect in Net-Zero Energy Building Design

Alghassab

Alvarez-Alvarado

et al. 2020

Sustainability

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Generation system interruptions in net-zero energy buildings (NZEBs) may result in missing the net-zero targets by a great margin. Consequently, it is significant to incorporate a realistic reliability model for renewable energy systems (RESs) that considers aging and long-term weather conditions. This study proposed a robust design optimization method that deals with the selection of RES to achieve NZEB. Different case studies were evaluated: 1. Deterministic approach; 2. Markov chain-based reliability without the aging effect; 3. Markov chain-based reliability with the aging effect. The results showed that the optimal sizes of RES, considering the aging effect, were much larger than the other two cases based on the annual energy balance. Moreover, the consideration of the aging effect on the reliability assessment of the generation system for NZEB opens a pathway for a more robust and economic design of RES.

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“…In renovation for improved energy efficiency, the aim is to decrease energy use and greenhouse gas (GHG) emissions, while also improving the indoor air quality and architectural qualities [6]. There are different approaches to achieve these goals, and the most widespread solutions are changes in the building envelope, changes in the architectural properties of the building, or retrofitting building services.…”

mentioning

confidence: 99%

Environmental Payback of Renovation Strategies in a Northern Climate—the Impact of Nuclear Power and Fossil Fuels in the Electricity Supply

2019

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The aim of this study is to assess how the use of fossil and nuclear power in different renovation scenarios affects the environmental impacts of a multi-family dwelling in Sweden, and how changes in the electricity production with different energy carriers affect the environmental impact. In line with the Paris Agreement, the European Union has set an agenda to reduce greenhouse gas emissions by means of energy efficiency in buildings. It is estimated that by the year 2050, 80% of Europe’s population will be living in buildings that already exist. This means it is important for the European Union to renovate buildings to improve energy efficiency. In this study, eight renovation scenarios, using six different Northern European electricity mixes, were analyzed using the standard of the European Committee for Standardization for life cycle assessment of buildings. This study covers all life cycle steps from cradle to grave. The renovation scenarios include combinations of photovoltaics, geothermal heat pumps, heat recovery ventilation, and improvement of the building envelope. The results show that while in some electricity mixes a reduction in the global warming potential can be achieved, it can be at the expense of an increase in radioactive waste production, and, in mixes with a high share of fossil fuels, the global warming potential of the scenarios increases with time, compared with that of the original building. It also shows that in most electricity mixes, scenarios that reduce the active heat demand of the building end up in reducing both the global warming potential and radioactive waste, making them less sensitive to changes in the energy system.

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A state-of-art review of retrofit interventions in buildings towards nearly zero energy level

Cited by 49 publications

References 32 publications

A Review of Retrofit Interventions for Residential Buildings in Hot Humid Climates

A Review of Retrofit Interventions for Residential Buildings in Hot Humid Climates

Optimal Distribution of Renewable Energy Systems Considering Aging and Long-Term Weather Effect in Net-Zero Energy Building Design

Environmental Payback of Renovation Strategies in a Northern Climate—the Impact of Nuclear Power and Fossil Fuels in the Electricity Supply

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