Browsing by Author "El Gindi, Salwa"

Now showing 1 - 3 of 3

The Effect of Shading Devices with Integrated Photovoltaics on Energy Efficiency of Buildings
(Springer Link, 9/25/2021) El Gindi, Salwa
Due to the increase in urban population and comfort levels, the use of electricity in the building sector has rapidly grown. Recently, building energy demand has significantly increased. Buildings consume almost 40% of the world’s energy. Combining energy efficiency measures with renewable energy sources in an integrated building system will improve the building performance and consequently reduce the electricity consumption and carbon emissions. Research demonstrated that it is technically possible to achieve significant reductions in energy consumption with the proper combination between energy efficiency measures and renewable energy sources. Building-integrated photovoltaics (BIPVs) have come a promising technology for energy generation and life-cycle costs reductions. In this regard, photovoltaic-integrated shading devices (PVSDs) constitute an essential part of BIPVs and play a significant role in electricity generation and energy consumption reductions. This research investigates and explores the potentials of combining PV technology in shading devices. Different types of external shading devices with integrated photovoltaic panels were examined for different orientations using DesignBuilder simulation software. The cooling loads, the electric lighting consumption, and the electric energy production related to the use of PVSD have been evaluated. The research aims at optimization of shading device configuration for energy efficiency and energy production.
Evaluation of the Effectiveness of Passive Design Strategies in Achieving Thermal Comfort in Residential Buildings in Egypt
(IOP Publishing Ltd, 2024-01) El Gindi, Salwa
This study aims at thermal comfort improvement in residential buildings through utilization of passive design strategies and energy efficiency measures. The study investigates the impact of passive strategies on thermal comfort in hot dry climate of Egypt. A climatic analysis of three cities: Aswan, Cairo and Alexandria was conducted to examine passive design strategies’ efficacy. Thermal comfort in a residential building was examined by DesignBuilder simulation software. Annual simulations were performed on the model where several passive design strategies were applied. Passive design strategies’ potential was quantified and a parametric analysis was conducted for thermal comfort improvement. The results demonstrate that applying passive design strategies can be effective in reducing discomfort hours in hot climate. Comfort hours could be increased from 22.6% to 33.1 % in Aswan , while in Cairo can be increased from 31.1% to 38.6 %, and in Alexandria from 36.9% to 46 %. The research findings could be used by architects for thermal comfort improvement in residential buildings.
Investigation of the Performance of Zero Energy Homes in Hot Climates
(IOP Publishing Ltd., 2024-01) El Gindi, Salwa
Globally, the rate at which buildings use resources and energy has been rising. Due to population growth, rise in living standard, and global warming, strategies for energy conservation have been adopted lately in zero energy buildings. Over the past decade, the energy consumption in constructions has increased at an unprecedented rate. Therefore, it is of great importance to mandate energy rationalization in building construction. This research investigates the impact of applying zero energy concept in homes in Egypt. The study begins by analysing the current situation of the energy sector and existing buildings in Egypt, the NZEB concept is defined and its different aspects are highlighted. Energy simulation by DesignBuilder simulation software is used to evaluate energy performance for a residential single family house model after applying Passive and Active design strategies. A number of energy saving strategies have been examined to optimize the building envelope with minimum energy requirements. The building energy consumption was reduced when various energy efficient strategies were combined. Besides utilizing energy efficient HVAC systems . a solar PV system is installed to meet the reduced energy. The case study was transformed into a zero-energy house. Results show that passive and active techniques can be dependable for steady energy production in buildings in hot dry regions.