Papers by Mostafa Refat Ismail
Call for Abstracts: February 7, 2019
Integrating Passive Design Strategies and Energy Generation Systems for Net Plus-Energy Housing in Egypt
Architecture and Urbanism: A Smart Outlook, 2020
Architecture and Urbanism: A Smart Outlook
Contemporary cities are characterised by the concentration of economic activities and intense hum... more Contemporary cities are characterised by the concentration of economic activities and intense human interactions. They continuously develop and transform, while impacting the Earth and reflecting the cultural choices adopted by successive generations. The International Conference “Architecture & Urbanism… A Smart Outlook” is hosted by the Faculty of Engineering, Ain Shams University, engaging renowned international keynote speakers from the fields of architecture and urban planning. As a prime location for solar and wind resources, Egypt would become a hub for hosting and exchanging innovative initiatives. The conference aims at addressing the challenges of unstoppable urbanization that gravely affect the world’s ecosystems. To become efficiently sustainable and regenerative, buildings and cities need to adopt smart solutions, which are instrumented, interconnected and intelligent. The conference discusses innovations of the built environment while depicting how such practices could transform future buildings and urban areas into places of higher value and quality. This book of abstracts consists of six tracks, namely: Smart Solutions; Renewable Energy and Energy Efficiency; Regenerative Design; Inception and Evolution; Education; and People and Environment.
Development of an IoT Assessment Method: An interdisciplinary Framework for Energy Efficient Buildings
Energy and Buildings, 2021
International Journal of Engineering Research and Technology, 2020
Net-zero and net-plus energy residential prototypes are becoming high prioritized due to the sign... more Net-zero and net-plus energy residential prototypes are becoming high prioritized due to the significant impact the buildings imply on the energy consumption and the environment. Although some previous studies investigated the influence of design variations for different parameters on the performance of a PV system, yet most of these studies did not focus on geometric parameters and how can they contribute in the overall performance of the system. This study proposes a methodology to investigate how the impact of design variations of a pre-defined set of parameters for a PV system on the total energy generated can be estimated through a few number of experiments. This study focused mainly on four parameters; the type of the PV technology used and three geometric parameters including; area, tilt angle and azimuth. The main effects and interactions between these parameters were computed using matrix algebra and Multiple linear regression. A representative case study in Cairo, Egypt is presented as an implementation of the proposed methodology to deduce a prediction model from a 2 4-1 fractional factorial, and the outcome of this model is validated. Results show that good estimates of most of these parameters are obtained, where aliasing was only limited to the two-factor interactions, which is an acceptable trade-off.
Acoustic of monolithic dome structures
Frontiers of Architectural Research, 2018
Abstract Monolithic dome structures were built in the 1970s in Europe and America. These dome str... more Abstract Monolithic dome structures were built in the 1970s in Europe and America. These dome structures share common benefits of being cost-efficient, earth-friendly, extremely durable, and easily maintained. Monolithic shells are easily constructed and are extremely cost-effective. Monolithic domes respond efficiently to any climate, even to extremely cold or hot temperatures. In terms of utility savings, monolithic domes can cut electricity consumption by up to one-third, thereby saving 60–70% of total energy costs. Moreover, monolithic structures provide the highest survivability rates from destructions. The interior of monolithic domes have perfect, concave shapes to ensure that sound travels through the dome and perfectly collected at different vocal points. These dome structures are utilized for domestic use because the scale allows the focal points to be positioned across daily life activities, thereby affecting the sonic comfort of the internal space. This study examines the various acoustic treatments and parametric configurations of monolithic dome sizes. A geometric relationship of acoustic treatment and dome radius is established to provide architects guidelines on the correct selection of absorption needed to maintain the acoustic comfort of these special spaces.
Port-Said Engineering Research Journal, 2016
Façade's formation as an integrated system can be used in the acoustic protection process when ef... more Façade's formation as an integrated system can be used in the acoustic protection process when effect on noise reflections and noise levels in urban streets. In order to know how to use façade morphology as an effective strategy for noise reduction, its elements should be well analyzed; for example: the impact of balcony shape, dimensions, and materials. Egyptian façade's patterns seem to be typically designs and rhythmic formation with their typical floors, balconies, and windows. The Egyptian code for construction determined some geometric parameters that organize the design process. As a result; this paper is considered an approach to determine the main geometric aspect of Egyptian residential façades through analyzing some cases of Egyptian residential projects, in order to be presented in future studies concerning in assessing noise propagation.
Port-Said Engineering Research Journal, 2016
Façades as a part of urban areas' components; play an important role in sound propagation which a... more Façades as a part of urban areas' components; play an important role in sound propagation which affect sound environment in a street canyon. A parametric study was performed in order to investigate the influence of façade's formation by segments ratio on sound fields in urban streets in terms of sound pressure level (SPL). A computer simulation technique based on a hybrid method combining ray tracing and image source modeling was adopted, and an omnidirectional sound source was used. Series of computer simulations of varied numbers of segments that form façades were investigated in order to evaluate the real effect of the diffusion reflections that happened by façades with formations; relative to the smooth façades on sound propagation in streets. Results, in terms of relative sound pressure levels, show that a positive effect can be observed in the reduction of sound levels.
The Egyptian Vocal Memnon: a 3300 years old sound sculpture breakthrough
A Stretched Pseudo Radiosity Method for Noise Propagation through the Urban Fabric
The effect of the scattering of sound from building facades on urban noise propagation
A Reduced to ONE Form Factor for Modelling Noise in Urban Canyons
Source Characteristics as bases for Acoustic Screen Design
A Stretched Pseudo Radiosity SPR-Method for the Prediction of Noise Propagation in City Streets
Acoustics Hotel Design criteria and challenges in EGYPT
Research in architectural building acoustics and aural soundscapes
Origamic Forms: A new Realm in improving Acoustical Environment
Cairo, a possible Aural Comfort: Factors effecting the Cairene perception of Soundscape
Frontiers of Architectural Research, 2013
The development of sustainability has made the application of green concepts to cityscapes and ur... more The development of sustainability has made the application of green concepts to cityscapes and urban design mandatory and has popularized the installation of vegetation on external street walls. Introducing greenery on external building elements is beneficial to the environment, reducing the heat impact experienced in "urban heat islands" and enhancing an area's visual effect. The popularity of such green systems has necessitated the assessment of their acoustic characteristics and their impact on long-distance noise propagation. These effects become important in hot climates, where the topology of the dense urban texture gives building walls larger areas than exposed streets, thereby amplifying the effects of the former's acoustic characteristics on noise levels. Considering the resultant sound level at a particular location between buildings as the contribution of several remote sources, a simplified computer model based on energy exchange is developed in this study. Owing to the complexity of the urban landscape, buildings are assumed to be an array of rectangular blocks. The computer model is used to investigate the effects of the installation of street vertical vegetation on long-distance noise propagation, as well as those of the geometric parameters of the dense Islamic urban texture on the resultant noise levels.
International Journal of 3-D Information Modeling, 2014
There is a great demand in multipurpose elements design for use adaptation. This in turn requires... more There is a great demand in multipurpose elements design for use adaptation. This in turn requires great flexibility in design strategies, as well as a wider spectrum of space settings to achieve the required environment that special activities imply. Acoustics is an essential factor influencing cognitive acts and behavior as well as on the extreme end the physical wellbeing inside a space. The complexity of this constrain is fueled up by the extended geometric dimensions of multipurpose halls, making acoustic adequateness a great concern, that could not easily be achieved for each purpose. To achieve a performance oriented acoustic environment, various parametric shaped false ceilings based on origami folded notion are simulated. These parigamic shapes are able to fold and unfold forming an oribotic structure, and changing the mutual acoustic environment according to the geometric shapes position and its changing exposed surface areas. The mobility of the facets in the parigamic sur...
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Papers by Mostafa Refat Ismail