Evaluation of Energy Efficiency Potential for the Building Sector in the Arab Region

Krarti, Moncef

doi:10.3390/en12224279

Cited by 28 publications

(13 citation statements)

References 34 publications

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“…Figure 9 shows a comparison of EUI in different countries, where the average energy consumption per meter square was recorded as low as 46 kWh/m 2 in Malta and as high as 267 kWh/m 2 in the selected models of Petra, which scored the highest energy consumption per square meter after the UAE (Al-Ain) case. However, the United States (US) and European Union (EU) were almost identical, at 124 and 121 kWh/m 2 , as shown in (Figure 9) below [38,[62][63][64].…”

Section: Average Energy-use Intensity In Modeled and Worldwide Report...mentioning

confidence: 99%

Evaluating and Enhancing the Energy Efficiency of Representative Residential Buildings by Applying National and International Standards Using BIM

et al. 2022

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Due to the chronic shortage of energy-related analytical data and disintegration of building energy regulations, numerous existing residential buildings in Petra (Jordan) and many cities worldwide suffer from poor building energy design. This paper aims at investigating the potential of applying energy-saving standards in order to improve the whole-building energy consumption of low-rise residential buildings in mild and dry climate zones. Representative buildings were selected based on a field survey. Proposed strategies focused on applicable solutions such as envelope components, and energy-related systems were set. The models were created using Autodesk Revit, and then the results were generated by the EnergyPlus engine. The findings showed that the application of building energy standards greatly impacts the overall energy end-use, where up to 30% reduction can be achieved by applying the Jordanian code, and up to 45% by applying the American standard. This work provides guidance for the residential building industry and policymakers in Jordan and many other countries with similar building characteristics and climate zones.

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Section: Average Energy-use Intensity In Modeled and Worldwide Report...mentioning

confidence: 99%

Evaluating and Enhancing the Energy Efficiency of Representative Residential Buildings by Applying National and International Standards Using BIM

et al. 2022

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“…Over the past few decades, the worldwide energy consumption has been increasing significantly which is related to population increase and urbanization. The building sector is associated with a significant share of the total energy consumption, for example, it accounts for around 17% of the overall energy consumption and 40%-45% of total electricity consumption in the MENA region (Wiesegart, 2015), and it also accounts for about 39% of total U.S. energy consumption in 2021 (Dunn, 2022). Therefore, it is critical to concentrate on the operational behavior and improvement of green buildings in terms of energy demand and comfort performance.…”

Section: Introductionmentioning

confidence: 99%

Influence of the hot water mass flow rate on heating of radiant floors of green buildings

Fahmy

Zamzam

Khalil

et al. 2023

Journal of Building Physics

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The objective of the research is to improve space heating of green buildings by examining experimentally the influence of the heating medium mass flow rate on thermal performance. A green building was built in Cairo, Egypt, that consists of two similar rooms: one is the heated room and the other is a reference for comparison. A photovoltaic thermal (PV/T) collector is used to heat up water in a storage tank, and the hot water in the tank is circulated in the radiant floor of the examined green building. The hot water mass flow rate was varied between 0.04 and 0.08 kg/s. It was found that decreasing the water mass flow rate improves the heating of the radiant floor. The percentage improvement in floor temperature due to heating over the reference room, reaches about 17% and 6% at mass flow rates of 0.04 and 0.08 kg/s, respectively. Engineering Equation Solver (EES) was used to solve the equations for the heat transfer process between the heating water and the floor. It was found that decreasing the mass flow rate increases the residence time of the heating water in the radiant floor, consequently, increases the heat energy transfer and the floor temperature. Increasing the heating fluid mass flow rate in green buildings could have a negative effect on the heat transfer, such that the appropriate heating fluid mass flow rate should be calculated based on the green building massive material as well as the operating conditions, for example, ambient temperature and wind speed.

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“…However, issues have been identified in existing buildings, including cost-effective methodology, evaluator-independent consistency, and appropriate evaluation methods [11]. Currently, energy efficiency policies and regulations have been created and enforced in countries with various climates, such as Arab countries [12], the Gulf Cooperation Council [13], Morocco [14], and South-Asian countries [15].…”

Section: Introductionmentioning

confidence: 99%

“…Energies 2022, 15, x FOR PEER REVIEW 2 of 19 such as Arab countries [12], the Gulf Cooperation Council [13], Morocco [14], and South-Asian countries [15]. Energy efficiency standards for residential buildings (hereafter: energy efficiency standards) were first enacted in Japan in 1980 as one of the main countermeasures against the 1973 oil crisis.…”

Section: Introductionmentioning

confidence: 99%

Traditional Town Houses in Kyoto, Japan: Present and Future

Iba

Hokoi

2022

Energies

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Climate change is an important issue that affects energy consumption, causes health problems, such as heat stroke, and requires urgent countermeasures. Serious health problems, including cardiac arrest, often occur in winter in traditional residences in Japan. Cooling-heating energy is required to maintain a healthy thermal environment. Although energy efficiency standards for buildings have been introduced worldwide to reduce energy consumption and various passive energy-saving methods are being investigated, traditional residences still face difficulties in conducting renovations because of various restrictions, such as the conservation of historical or aesthetic values. In this study, these issues and their appropriate countermeasures were investigated for a traditional townhouse in Kyoto, Japan, “Kyo-machiya” (including its new form “Heisei-no-Kyo-machiya”). The potential of reducing heating and cooling loads was examined by conducting numerical analysis considering residents’ lifestyles. Field surveys of the indoor environment were conducted in both summer and winter. It was revealed that by optimizing the times and positions of opening and closing the windows and indoor partitions, the indoor air flow could be adjusted from both thermal comfort (cooling in summer) and discomfort (cold drafts in winter) perspectives, leading to improving the indoor environment without using energy.

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Evaluation of Energy Efficiency Potential for the Building Sector in the Arab Region

Cited by 28 publications

References 34 publications

Evaluating and Enhancing the Energy Efficiency of Representative Residential Buildings by Applying National and International Standards Using BIM

Evaluating and Enhancing the Energy Efficiency of Representative Residential Buildings by Applying National and International Standards Using BIM

Influence of the hot water mass flow rate on heating of radiant floors of green buildings

Traditional Town Houses in Kyoto, Japan: Present and Future

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