Retrofitting strategy for building envelopes to achieve energy efficiency

El-Darwish, Ingy I.; Gomaa, Mohamed

doi:10.1016/j.aej.2017.05.011

Cited by 160 publications

(67 citation statements)

References 6 publications

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“…Many studies have discussed the potential of retrofitting building envelopes in conjunction with local limitations such as climate, local policy, and occupant behaviour by using case studies in their specific locations [27][28][29][30][31]. In a case study from Egypt, a retrofitted educational building demonstrated that a simple retrofitting strategy on a building envelope can reduce the average energy consumption up to 33% even though the building is located in a hot climate [27]. In reference [28], a case study in Italy illustrated the effect of building envelope mass on thermal transmittance.…”

Section: Literature Reviewmentioning

confidence: 99%

Energy and Economic Analysis of Tropical Building Envelope Material in Compliance with Thailand’s Building Energy Code

Chiradeja

Ngaopitakkul

2019

Sustainability

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The building envelope has a direct impact on the overall energy consumption of a building. Thus, an improvement in the building envelope using energy-efficient material can yield the desired energy performance. This study is based on the materials and compositions used in building envelopes in compliance with the building energy code of Thailand. The building under study is an educational building located in Bangkok, Thailand. Both the energy and the economic aspects of retrofitted building envelopes are discussed in this study. The energy performance was evaluated by calculating the thermal transfer value and whole building energy consumption using the building energy code (BEC) software. The simulation was done under the assumption that the building envelope in the case study building was retrofitted with different materials and compositions. The study determines the feasibility of retrofitting buildings using energy-efficient material by utilizing the discounted payback period and internal rate of return (IRR) as indicators. The results show that retrofitted building envelopes in every case can reduce the whole building energy consumption. In the best envelope configuration, energy consumption can decrease by 65%. In addition, the economic potential is also high, with an IRR value of approximately 15% and a payback period of 23 less than nine years. These finding indicate that a building envelope made with energy-efficient material can achieve good results for both energy performance and economic feasibility.

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Section: Literature Reviewmentioning

confidence: 99%

Energy and Economic Analysis of Tropical Building Envelope Material in Compliance with Thailand’s Building Energy Code

Chiradeja

Ngaopitakkul

2019

Sustainability

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“…The main aim of thermal retrofitting corresponds to reducing the heat demand in a building by significantly decreasing the heat transfer coefficients of wall barriers and improving the total efficiency of the heating system in a building, if required [21]. Diverse strategies and modernization plans in terms of optimizing the costs of thermal retrofitting have been devised in different countries around the world [21][22][23]. Modernization of the existing buildings in order to reduce the energy consumption and mitigate the CO 2 emission constitutes one of the main topics, enabling us to achieve sustainable development [24].…”

Section: Introductionmentioning

confidence: 99%

Influence of Thermal Retrofitting on Annual Energy Demand for Heating in Multi-Family Buildings

2020

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The paper presented the analysis of heat consumption for heating in multi-family residential buildings before and after thermal retrofitting. The analysis involved four groups of buildings, i.e., 43 buildings in total, located in various localities, belonging to one weather station. The predicted level of energy savings resulting from thermal retrofitting was achieved from the energy audits. The actual heat consumption, following the calculation into so-called external standard conditions, was obtained based on the readouts from heat-meters. For each building, the values of heat consumption over the periods of 6–10 years were read. The performance measurements involved the periods before, during, and after thermal retrofitting. The following statistical tests were used for data analysis: Wilcoxon–Mann–Whitney, Shapiro–Wilk, Bartlett, ANOVA, Kruskal–Wallis, Dunn and Holm post-hoc. The performed analyses showed that the mean value of energy savings predicted by audits reached 38.5% when the real mean value of savings, achieved from heat-meters, equaled 30.3%. The annual energy demand factors for heating were calculated for final energy and non-renewable primary energy factors. It was established that most of the analyzed objects fulfilled the primary energy factor requirements found in the Polish technical and construction regulations, which were valid at the time of investment.

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“…It has been found that the most effective energy saving methods are the upgrading of lighting, the insulation of the roof of the building, and the installation of an automatic temperature control system. Ingy El-Darwish and Mohamed Gomaa investigated the most significant retrofit strategy for public building in Egypt [13]. They concluded that solar shading has the largest contribution of the total energy saving followed by double glazing.…”

Section: Introductionmentioning

confidence: 99%

Improving the Energy Efficiency of the Residential Buildings in Jordan

Bataineh

Alrabee

2018

Buildings

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The purpose of this study is to investigate the impact of energy retrofit programs for the existing residential buildings under the typical Jordanian climate. The Jordanian climate has mild heating season and a hot (and usually dry) cooling season. Several building types located in Jordan were considered as case study. The household sector in Jordan accounts for almost 43% of the total electricity consumption. Three levels of energy retrofit programs have been proposed. The economic, environmental and social benefits of the programs have been analyzed. Parametric analyses have been performed to determine the impact of each energy efficiency measure on the energy performance of residential buildings. The payback period for each level have been determined for several regions located in Jordan. The results proved the feasibility of the program except for implementing the third level on a traditional house. The results show that implementing level 3 energy efficiency measures can save up to 43% of the annual electricity consumption, save up to 842 MW on peak demand energy, and 2190 kilo-ton/year reduction of CO 2 emission. That is equivalent to 3.37 TWH of electricity consumption compared to the base case. The total jobs created will be 80,769 job/year when performing the retrofit program.

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Retrofitting strategy for building envelopes to achieve energy efficiency

Cited by 160 publications

References 6 publications

Energy and Economic Analysis of Tropical Building Envelope Material in Compliance with Thailand’s Building Energy Code

Energy and Economic Analysis of Tropical Building Envelope Material in Compliance with Thailand’s Building Energy Code

Influence of Thermal Retrofitting on Annual Energy Demand for Heating in Multi-Family Buildings

Improving the Energy Efficiency of the Residential Buildings in Jordan

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