Identifying and weighting indicators of building energy efficiency assessment in Ghana

Addy, Michael Nii; Adinyira, Emmanuel; Ayarkwa, Joshua

doi:10.1016/j.egypro.2017.09.554

Cited by 15 publications

(8 citation statements)

References 23 publications

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“…Energy use and conservation was ranked as the 3rd most significant ENSI. Energy efficiency is an important component of green construction and is generally considered a critical success criterion (Addy et al , 2017; Vatalis et al , 2013). Though energy is used in the project lifecycle at different levels, the bulk energy is used during the operation phase (Hu, 2017).…”

Section: Discussing the Quantitative Results And Validating Them With...mentioning

confidence: 99%

Environmental performance indicators for assessing sustainability of projects in the Ghanaian construction industry

Agyekum¹,

Botchway²,

Adinyira³

et al. 2021

SASBE

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PurposeRecent reports based on the sustainable development goals (SDGs) have revealed that no country is in line with achieving the targets of the 2030 Agenda for sustainable development, with the slowest progress being witnessed mainly on goals that are focused on the environment. This study examines environmental performance indicators for assessing the sustainability of building projects.Design/methodology/approachThe study uses an explanatory sequential design with an initial quantitative instrument phase, followed by a qualitative data collection phase. An extensive critical comparative review of the literature resulted in the identification of ten environmental sustainability indicators. One hundred and sixty-seven questionnaire responses based upon these indicators from the Ghanaian construction industry were received. Data were coded with SPSS v22, analysed descriptively, and via inferential analysis. These data were then validated through semi-structured interviews with six interviewees who are fellows of their respective professional bodies, a senior academic (professor in construction project delivery) and a government official. Data obtained from the semi-structured validation interviews were analysed through the side-by-side comparison of the qualitative data with the quantitative data.FindingsThe findings from the study suggest that all the indicators were important in assessing building projects' environmental sustainability across the entire life cycle. Key among the identified indicators is the effects of the project on “water quality, air quality, energy use and conservation, and environmental compliance and management”. The interviewees further agreed to and confirmed the importance of these identified indicators for assessing the environmental sustainability of building projects in Ghana.Originality/valueCompared to existing studies, this study adopts the exploratory sequential design to identify and examine the critical indicators in assessing the environmental sustainability across the entire lifecycle of building projects in a typical developing country setting, i.e. Ghana. It reveals areas of prime concern in the drive to place the local construction industry on a trajectory towards achieving environmental sustainability.

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Section: Discussing the Quantitative Results And Validating Them With...mentioning

confidence: 99%

Environmental performance indicators for assessing sustainability of projects in the Ghanaian construction industry

Agyekum¹,

Botchway²,

Adinyira³

et al. 2021

SASBE

View full text Add to dashboard Cite

show abstract

“…33,34 A weighting mechanism based on expert's consensus is often employed in the literature. 34,37,38,39 These studies show that panel method is a common approach for this type of studies. Moreover, the panel method is known as a promising approach for determining the weighting factors and is widely used in life cycle assessment studies.…”

Section: Panel Methodsmentioning

confidence: 87%

“…Several studies used the similar approach with this current study, as the panel composed of academic experts in the sustainable energy field, and all panel experts were given the same information to determine the relative priority factor for several indicators 33,34 . A weighting mechanism based on expert's consensus is often employed in the literature 34,37,38,39 . These studies show that panel method is a common approach for this type of studies.…”

Section: Methodsmentioning

confidence: 93%

“…A list of weighted indicators for energy efficiency assessment related to residential buildings for cold and hot zones in China was obtainable based on the knowledge of experts 36 . A similar study involved a maximum of 10 experts in panel method in the area of building energy, as they agreed that the primary goal of the study was to select people with the requisite expert knowledge concerning the field in question 37 . Several studies used the similar approach with this current study, as the panel composed of academic experts in the sustainable energy field, and all panel experts were given the same information to determine the relative priority factor for several indicators 33,34 .…”

Section: Methodsmentioning

confidence: 99%

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Assessment of various energy storage methods for implementation in hot and arid climates

AlShafi

Biçer

2020

Energy Storage

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Global warming plays an increasing role in our world, as the share of renewable energy sources in the overall production of electricity has witnessed exponential growth over the past years. Consumer demands are required to be met at any moment at a feasible price. However, storing energy in hot and arid climate regions is a sensitive matter as it is critical to consider appropriate technologies to implement for avoiding unnecessary causalities caused by extreme temperatures. This study compares 13 different energy storage methods, namely; pumped hydro, compressed air, flywheels, hot water storage, molten salt, hydrogen, ammonia, lithium-ion battery, Zn-air battery, redox flow battery, fuel cells, supercapacitors, and superconducting magnetic storage to be implemented in hot arid regions in terms of water usage, energy density, location dependency, and temperature degradation. A survey was conducted based on prior criteria to compare all 13 energy storage methods. The study concluded that the highest rankings for energy storage techniques are obtained for; Zn-air battery, superconductors, and flywheels with overall rankings of 7.18, 6.73, and 6.61, respectively. In contrast, some of the rankings are very close to each other implying the potential application of several methods in hot climates.

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“…The numerical model was validated and compared to an experimental model integrated into an office building simulated in several European climates; the results achieved a 56.8% to 104.4% energy consumption reduction. All works take this direction intending to improve energy efficiency [13] in different building types and models, the newest and the existing [14] even for the historical ones [15], under several conditions of climate, occupation, construction, and system integration to achieve optimal thermal comfort.…”

Section: Introductionmentioning

confidence: 99%

Energy Efficiency for Social Buildings in Morocco, Comparative (2E) Study: Active VS. Passive Solutions Via TRNsys

et al. 2020

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This paper aims to highlight the potential of solar water heater installations in Morocco. The project involves the comparison of active and passive solutions for energy efficiency in buildings. To this end, a numerical simulation model of solar water heater installations is created under TRNsys. Three hot water demand scenarios (Low, Standard, and High) were taken into account for the six climatic zones defined in the Moroccan thermal regulation of constructions. The same software (TRNsys) is used to model a pilot building consisting of 16 flats. Energy efficiency actions have been applied to the building envelope (insulation and glazing) and simulations are made for the six areas. The simulation results comparing energy and financial savings show the influence of subsidized gas prices on solar water heaters’ relevance despite significant energy savings. This work proves that solar water heaters will be a primary obligation for Morocco, taking into account changes in butane gas prices.

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Identifying and weighting indicators of building energy efficiency assessment in Ghana

Cited by 15 publications

References 23 publications

Environmental performance indicators for assessing sustainability of projects in the Ghanaian construction industry

Environmental performance indicators for assessing sustainability of projects in the Ghanaian construction industry

Assessment of various energy storage methods for implementation in hot and arid climates

Energy Efficiency for Social Buildings in Morocco, Comparative (2E) Study: Active VS. Passive Solutions Via TRNsys

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