The impact of renovation measures on building environmental performance: An emergy approach

Andrić, Ivan; Pina, André; Ferrão, Paulo; Lacarrière, Bruno; Corre, Olivier Le

doi:10.1016/j.jclepro.2017.06.053

Cited by 35 publications

(23 citation statements)

References 30 publications

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“…(1) Solar irradiation—the input of solar irradiation (Equation (1)) to urban renewal is regarded as a kind of free renewable resource invested in the building system, which can impact the indoor thermal environment of buildings [ 40 , 64 ].

where

is the solar emergy of the solar irradiation in the construction phase;

is the construction site surface (footprint);

is the annual amount of solar radiation, equal to 3.5 × 10 9

[ 65 ];

is the surface albedo, equal to 0.7 in this study;

is the construction time; and

is the transformity of solar energy.…”

Section: Methodsmentioning

confidence: 99%

“…(2) Materials—the building materials are the resources invested in the system to construct a building, which mainly occurs in the construction phase [ 34 , 64 ]. The emergy of the system inflows can be calculated as follows (Equation (2)):

where

is the solar emergy of the building materials;

is the quantity of material

; and

is the transformity of material

.…”

Section: Methodsmentioning

confidence: 99%

“…(7) Human labor—the emergy of human labor (Equation (8)) is mainly required during the building demolition, construction and end-of-life phases. The method for calculating the emergy of labor can be represented as follows [ 64 ]:

where

is the emergy equivalent of human labor;

is the number of working hours per day of one employee, which is 8 h in this study;

is the number of employees, which equals 10 in this study;

are the working days required in the life cycle process; and

is the transformity of labor.…”

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Co-Benefits Analysis of Buildings Based on Different Renewal Strategies: The Emergy-Lca Approach

Cui

Hong

Liu

et al. 2021

IJERPH

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Many cities have encountered challenges associated with rapid urban development, population growth and aging, in which urban renewal has become a promising option. Different renewal strategies, such as redevelopment, refurbishment and conservation, not only contributes to quality improvement and energy consumption reduction of dilapidated urban area, but also to greenhouse gas (GHG) emissions mitigation. Such integrated benefits are often termed as co-benefits. However, choosing the most co-benefits strategy to adopt requires a holistic understanding of social-economic and environmental aspects, which has been less reported in the existing literature. Under such circumstance, this article aims to shed light on the co-benefits of different renewal strategies by adopting the Emergy-Life cycle assessment method. Then, the method is applied to one case study of the refurbishment of an educational building located in Chongqing, China. Resource allocation, CO2 emissions and emergy-based indicators are calculated to assess the co-benefits during a 60-year research period, to compare the impacts of the complete demolition followed by a new one (rebuilding strategy) and the refurbishing of the existing building (refurbishment strategy). The case study shows that the annual emergy in the O&M phase of rebuilding strategy and refurbishment strategy were lower than existing building. Rebuilding and refurbishment strategies released approximately 59.1% and 80.6%, respectively, of the total CO2 emissions that would be produced by the existing building. The results reveal that substantial environmental benefits can be obtained in both the refurbishment and rebuilding strategies. On the other hand, it can be concluded that the emergy yield ratio (EYR) for the rebuilding strategy is higher than refurbishment strategy, which demonstrate the better performance of refurbishment considering that less resources are required to generate greater benefits. In addition, the value of environmental loading ratio (ELR) and emergy sustainability index (ESI) also suggests that the refurbishment strategy performs better from the perspective of the environment. Thereby, the refurbishment strategy is more suitable than the rebuilding strategy. Findings from this study can be useful to urban planners and decision-makers in choosing the most suitable strategy to improve the quality of existing buildings.

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where

is the solar emergy of the solar irradiation in the construction phase;

is the construction site surface (footprint);

is the annual amount of solar radiation, equal to 3.5 × 10 9

[ 65 ];

is the surface albedo, equal to 0.7 in this study;

is the construction time; and

is the transformity of solar energy.…”

Section: Methodsmentioning

confidence: 99%

where

is the solar emergy of the building materials;

is the quantity of material

; and

is the transformity of material

.…”

Section: Methodsmentioning

confidence: 99%

where

is the emergy equivalent of human labor;

is the number of working hours per day of one employee, which is 8 h in this study;

is the number of employees, which equals 10 in this study;

are the working days required in the life cycle process; and

is the transformity of labor.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Co-Benefits Analysis of Buildings Based on Different Renewal Strategies: The Emergy-Lca Approach

Cui

Hong

Liu

et al. 2021

IJERPH

View full text Add to dashboard Cite

show abstract

“…The matters of the positive impact of reconstruction of buildings on the ecosystem in the residential area were considered in works by scientists Ivan Andrića, André Pinaa, Paulo Ferrãoa, Bruno Lacarrièreb, Olivier Le: "finally, based on the emergency analysis of indicators, we can conclude that the use of building repair to enhance the overall building environmental performance, provides higher resource use efficiency in indigenous and reduces the pressure on the local ecosystem" [22].…”

Section: Literature Reviewmentioning

confidence: 99%

Evaluation of economic efficiency of the state programme of renovation of residential buildings in Moscow

Kolobova

2018

MATEC Web Conf.

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Renovation of housing estate in Moscow is aimed at prevention of growth of the hazardous dwelling in Moscow, development of the housing estate and their improvement. The programme of renovation is adopted for the period up to 2032 and it will allow eliminating the imbalance of development of the urban environment, which is saved up for the last decades, on the other hand it will prevent mass emergency housing estate in Moscow in the next 10-15 years. Updating of the housing estate is to be based on the development of infrastructure, on the creation of additional conditions for human development, on the ecology, providing complex development of the territory according to the modern requirements to the urban environment. The economic efficiency of renovation of the housing estate will be estimated with the use of indicators of increase in the consumer quality of apartments, blocks of flats, residential districts. The method of calculation of economic effect of renovation before delivery of inhabited and non-residential premises for rent is developed for the definition of payback period and the potential monthly cost of the rent after renovation of buildings. The offered method allows estimating the efficiency of organizational actions of the state programme and it is only a part of assessment of the overall economic efficiency. The offered technique of assessment of economic efficiency of renovation will allow making economically reasonable decisions during various stages of city-planning activity: during preliminary preparation, during planning of the territory, during development and the approval of the design and estimate documentation.

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“…The negative impact of traditional energy consumption on the environment has aroused great social concerns. According to relevant calculations, the annual energy consumption of buildings accounts for about 40% of the world's total energy consumption [1]. In addition, doors and windows are the most serious parts of a building's energy loss and their energy consumption accounts for a large proportion of the total energy consumption of buildings [2].…”

Section: Introductionmentioning

confidence: 99%

A Solar-Driven Flexible Electrochromic Supercapacitor

et al. 2020

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Solar-driven electrochromic smart windows with energy-storage ability are promising for energy-saving buildings. In this work, a flexible photoelectrochromic device (PECD) was designed for this purpose. The PECD is composed of two flexible transparent conductive layers, a photocatalytic layer, an electrochromic material layer, and a transparent electrolyte layer. The photocatalytic layer is a dye-sensitized TiO2 thick film and the electrochromic layer is a WO3 thin film, which also possesses a supercapacitive property. Under illumination, dye-sensitized TiO2 thick film realizes photo-drive electrochromism that the WO3 changes from colorless to blue with large optical modulation. Meanwhile, the PECD has an electrochemical supercapacitance showing an energy storage property of 21 mF·cm−2 (114.9 F·g−1 vs the mass of WO3), stable mechanical performance and long cycle performance. The PECD can effectively adjust the transmittance of visible and near-infrared light without any external power supply, realizing zero energy consumption, and can convert solar energy into electrical energy for storage.

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The impact of renovation measures on building environmental performance: An emergy approach

Cited by 35 publications

References 30 publications

Co-Benefits Analysis of Buildings Based on Different Renewal Strategies: The Emergy-Lca Approach

Co-Benefits Analysis of Buildings Based on Different Renewal Strategies: The Emergy-Lca Approach

Evaluation of economic efficiency of the state programme of renovation of residential buildings in Moscow

A Solar-Driven Flexible Electrochromic Supercapacitor

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