Blar i NTNU Open på forfatter "Hamdy, Mohamed"
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A multi-stage optimization method for cost-optimal and nearly-zero-energy building solutions in line with the EPBD-recast 2010
Hamdy, Mohamed (Journal article; Peer reviewed, 2013)Finding cost-optimal solutions towards nearly-zero-energy buildings (nZEBs) in accordance with European energy performance of buildings directive (EPBD-recast 2010) is a challenging task. It requires exploring a huge number ... -
BROUGHT BY DEGREES: A FOCUS ON THE CURRENT INDICATORS OF LEAN ‘SMARTNESS’ IN SMART CITIES
Collins, Dave; Johansen, Agnar; Kalsaas, Bo Terje; Temeljotov Salaj, Alenka; Hamdy, Mohamed (Chapter, 2021)The purpose of this paper is to look at the indicators to which a city can be considered to be a smart city based upon the degree it meets specific indicators within the categories of ‘Social Smartness’, ‘Technological ... -
Combining building automation control systems with envelope retrofitting to improve the energy performance of cold climate housing
Felius, Laurina Cornelia (Doctoral theses at NTNU;2021:167, Doctoral thesis, 2021)Improving the energy efficiency of buildings by combining envelope and energy systems retrofitting with smart technologies is recommended by the Energy Performance of Buildings Directive. The largest share of the existing ... -
Comparison of the Energy Saving Potential of Adaptive and Controllable Smart Windows: A State-of-the-Art Review and Simulation Studies of Thermochromic, Photochromic and Electrochromic Technologies
Tällberg, Kurt Inge Richard; Jelle, Bjørn Petter; Loonen, Roel; Gao, Tao; Hamdy, Mohamed (Journal article; Peer reviewed, 2019)Windows play a huge role in today’s buildings, allowing for outside view and providing occupants with daylight. However, windows are also often considered to be one of the weakest building components with respect to high ... -
Daylight requirements in the Norwegian Regulations vs. the European Standard: A case study considering thermal performance
Solvang, Helene (Master thesis, 2019)I denne masteroppgaven er Norsk Byggteknisk Forskrift TEK17 og den Europeiske Standarden for Dagslys FprEN17037 blitt sammenlignet med hensyn på dagslys, samt hvilke konsekvenser for termisk komfort og energibehov de ulike ... -
Effect Of Grid Tariffs On Demand-side Management In All-electric Buildings In Norway
Karlsen, Sophie Schønfeldt; Backe, Stian; Hamdy, Mohamed (Journal article, 2019)The increased share of inflexible, renewable energy sources in power systems is challenging the balancing of demand and supply. Rapid and unpredictable load variations might require large power grid capacities to ensure ... -
Green public procurement and energy performance contracting: exploring the linkage and improvement opportunities
Hamdan, Hasan; De Boer, Luitzen; Hamdy, Mohamed (ZEN Report;29, Research report, 2020)Energy Performance Contracting (EPC) is a method to finance energy efficiency investments from cost savings in the building sector. Under an EPC arrangement, an external organization, an Energy Service Company (ESCO), ... -
Multi-Objective Optimization of Building Energy Design to Reconcile Collective and Private Perspectives: CO2-eq vs. Discounted Payback Time
Hamdy, Mohamed; Mauro, Gerardo Maria (Journal article; Peer reviewed, 2017)Building energy design is a multi-objective optimization problem where collective and private perspectives conflict each other. For instance, whereas the collectivity pursues the minimization of environmental impact, the ... -
Predicting annual illuminance and operative temperature in residential buildings using artificial neural networks
Kristiansen, Tobias (Master thesis, 2021)Mennesker bruker 87 % av tiden sin innendørs, for det meste i sin egen bolig. Innemiljøet er en avgjørende faktor for folks helse og velferd. Det er en økende utfordring med overoppheting i bygninger på grunn av varmere ... -
Quantification of Energy Flexibility and Survivability of All-Electric Buildings with Cost-Effective Battery Size: Methodology and Indexes
Homaei, Shabnam; Hamdy, Mohamed (Peer reviewed; Journal article, 2021)All-electric buildings are playing an important role in the electrification plan towards energy-neutral smart cities. Batteries are key components in all-electric buildings that can help the demand-side energy management ... -
Resilient cooling of buildings to protect against heat waves and power outages: Key concepts and definition
Attia, Shady; Levinson, Ronnen; Ndongo, Eileen; Holzer, Peter; Kazanci, Ongun; Homaei, Shabnam; Zhang, Chen; Olesen, Bjarne W.; Qi, Dahai; Hamdy, Mohamed; Heiselberg, Per (Peer reviewed; Journal article, 2021)The concept of climate resilience has gained extensive international attention during the last few years and is now seen as the future target for building cooling design. However, before being fully implemented in building ... -
Sensitivity analysis for investigating the energy performance of a retrofitted kindergarten under different weather scenarios
Eggebø, Håkon (Master thesis, 2017)Sensitivity analysis is a technique that aims at estimating how the uncertainty in the independent variables of a mathematical model effects a particular dependent variable given a predefined set of assumptions. This method ... -
Simulation-based framework to evaluate resistivity of cooling strategies in buildings against overheating impact of climate change
Rahif, Ramin; Hamdy, Mohamed; Homaei, Shabnam; Zhang, C.; Holzer, P.; Attia, Shady (Peer reviewed; Journal article, 2021)Over the last decades overheating in buildings has become a major concern. The situation is expected to worsen due to the current rate of climate change. Many efforts have been made to evaluate the future thermal performance ... -
Strategies for Modelling Dynamic Parameters in Optimization-Based Building Energy Model Calibration: A Case Study
Haug, Karoline Bondø (Master thesis, 2019)Bygninger står for en høy andel av verdens energiforbruk. Selv om det stadig gjøres fremskritt når det kommer til innstramminger i energikrav for nye bygninger, er det samtidig viktig å undersøke kostnadseffektive løsninger ... -
The Impact of Insulation and HVAC Degradation on Overall Building Energy Performance: A Case Study
Eleftheriadis, Georgios; Hamdy, Mohamed (Journal article; Peer reviewed, 2018)Through monitoring of buildings, it can be proven that the performance of envelope elements and energy supply systems deteriorates with time. The results of this degradation are higher energy consumption and life cycle ... -
The impact of ventilative cooling technologies on heating energy and thermal comfort in residential buildings
Johansen, Vegard Skregelid (Master thesis, 2020)I løpet av de siste tiårene så har kravene for energiforbruk og termisk inneklima blitt stadig strengere. Samtidig har nye løsninger blitt introdusert som har potensiale til å løse problemer relatert til unødvendig ... -
Thermal resilient buildings: How to be quantified? A novel benchmarking framework and labelling metric
Homaei, Shabnam; Hamdy, Mohamed (Peer reviewed; Journal article, 2021)The resilient building design has become necessary within the increasing frequency and intensity of extreme disruptive events associated with climate change. Since thermal comfort is one of the main requirements of occupants, ... -
Undersøkelse av ventilasjonsprinsipper for museer
Omli-Moe, Tonje Margrethe (Master thesis, 2019)Museer er institusjoner som skal ta vare på samlinger av gjenstander med historisk eller vitenskapelig verdi, samt kunstverk. Denne kunnskapen skal videreføres gjennom utstillinger tilgjengelig for offentligheten, og sikre ... -
Upgrading the Smartness of Retrofitting Packages Towards Energy-Efficient Residential Buildings in Cold Climate Countries: Two Case Studies
Felius, Laurina C; Hamdy, Mohamed; Dessen, Fredrik; Hrynyszyn, Bozena Dorota (Peer reviewed; Journal article, 2020)Improving the energy efficiency of existing buildings by implementing building automation control strategies (BACS) besides building envelope and energy system retrofitting has been recommended by the Energy Performance ...