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Building design is a decision making process where decisions are made on the selection of certain design variables in order to achieve certain objectives (i.e. economy, thermal comfort, visual comfort, aesthetics, etc.). Information on... more
Building design is a decision making process where decisions are made on the selection of certain design variables in order to achieve certain objectives (i.e. economy, thermal comfort, visual comfort, aesthetics, etc.). Information on the relationships between the variables and the desired objectives are necessary for proper decision making. Architects have traditionally reached their design decisions based on past experience. However, total reliance upon individual experience may lead to incomplete and inaccurate results. Therefore, given today's complexities in building design as well as advances in computer technology, systematic approaches can be used as an aid to, not a replacement for, building designers in the decision making process. The aim of this paper is to describe the formulation of an optimization model for the thermal design of building envelopes. This requires defining building design variables, a criterion of optimality, constraints, and a suitable thermal sim...
In this paper, presented is the state of the art of Energy Efficiency (EE) of residential buildings in Serbia. Special attention is paid to energy efficiency in already existing buildings. The average energy consumption in residential... more
In this paper, presented is the state of the art of Energy Efficiency (EE) of residential buildings in Serbia. Special attention is paid to energy efficiency in already existing buildings. The average energy consumption in residential buildings in Serbia is over 150 kWh/m2 per year, while in developed European countries it is about 50 kWh/m2 per year. In this paper examined is the contribution of ventilation losses, through the windows of low quality, regardless whether they are poorly made, or made from bad materials, or with no adequate glass. Besides ventilation losses, which are of major importance in our buildings, special attention is paid to transmission losses, which are consequence of the quality and energy efficiency of the facade. All of the above statements are proved by measurements obtained on a representative building of the Block 34 in New Belgrade, built in the eighties of the last century. In addition to measurements performed the calculation of energy consumption ...
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ABSTRACT The energy issue is becoming a determining factor in the living standards of individuals as well as societies. The increasing demand for increased productivity, improved quality of products/services, reduced environmental... more
ABSTRACT The energy issue is becoming a determining factor in the living standards of individuals as well as societies. The increasing demand for increased productivity, improved quality of products/services, reduced environmental emissions, and reduced energy costs are all incentives for organizations to invest in and implement new energy efficiency technologies and management approaches. This necessitates a collective effort towards the efficient and wise utilization of all energy resources. This article introduces the concept of total productive energy management (TPEM). This approach would require the involvement of all members of a facility to take part in energy conservation activities in their facility by being responsible for the management of energy systems in the space(s) they occupy and/or the equipment they operate. Top management commitment, incentives to employees, and continuous training are the means of implementing such an approach in organizations. This approach will help implant the awa...
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Careful long term decisions in the design and operation of buildings can signrf~cantly improve the thermal performance and thus reduce the consumption of energy. The availability and ease of use of today's computers can be a... more
Careful long term decisions in the design and operation of buildings can signrf~cantly improve the thermal performance and thus reduce the consumption of energy. The availability and ease of use of today's computers can be a sigruficant benefit to the decision making process of building design. In dealing with the building as a thennal system, the proper selection of its components and their relationships can be organized using a systems approach. This can be achieved by coupling an optimization technique into the thermal performance of buildings early in the design process. This requires formulating the building as a welldefined thermal system in a framework suitable for the application of systematic approaches. The aim of this paper is to describe the basic £ramework of a building thermal design optimization model by defining building design variables, a criterion of optimality, constraints, and a suitable thermal simulation model that can be integrated into the proper optimiz...
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Early design decisions can be significant in determining the thermal performance of buildings. However, necessary information to base such decisions is rarely available. Implementation of systematic approaches to the design process can... more
Early design decisions can be significant in determining the thermal performance of buildings. However, necessary information to base such decisions is rarely available. Implementation of systematic approaches to the design process can help in providing such information with the least cost. This article presents the development and validation of an optimization model that utilizes a direct search optimization technique incorporated with an hourly building energy simulation program for the optimum thermal design of building envelopes. The implementation results of the model to the design of office and residential buildings at different climatic conditions are also presented.
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Research Interests:
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Research Interests:
Building design is a decision making process, in which decisions are made on the selection of certain design variables in order to achieve certain objectives (i.e. economy, thermal comfort, visual comfort, aesthetics, etc.). Information... more
Building design is a decision making process, in which decisions are made on the selection of certain design variables in order to achieve certain objectives (i.e. economy, thermal comfort, visual comfort, aesthetics, etc.). Information on the relationships between the variables and the desired objectives is necessary for proper decision making. Architects have traditionally reached their design decisions based on past
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This study presents the implementation of a multi-phase investigation and remedial approach aimed at solving a thermal comfort problem in an office building which was the subject of complaint. As part of the first phase to verify... more
This study presents the implementation of a multi-phase investigation and remedial approach aimed at solving a thermal comfort problem in an office building which was the subject of complaint. As part of the first phase to verify existence and extent of the problem, a simple and practical questionnaire survey was developed and utilized to try eliciting the occupants' perception of the thermal comfort quality of the space in question. Additionally, field measurements of space thermal parameters and the Heating, Ventilating and Air-Conditioning (HVAC) system parameters were conducted as part of the preliminary and detailed assessment stages. Analysis of assessment results has lead to the identification of short-term and long-term remedial measures to alleviate thermal comfort problems and improve the quality of thermal comfort in the office space.
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Research Interests:
Research Interests:
Careful long term decisions in the design and operation of buildings can significantly improve the thermal performance and thus reduce the consumption of energy. The availability and ease of use of today's computers can be a... more
Careful long term decisions in the design and operation of buildings can significantly improve the thermal performance and thus reduce the consumption of energy. The availability and ease of use of today's computers can be a sigruficant benefit to the decision making process of building design. In dealing with the building as a thermal system, the proper selection of its components and their relationships can be organized using a systems approach. This can be achieved by coupling an optimization technique into the thermal performance of buildings early in the design process. This requires formulating the building as a well-defined thermal system in a framework suitable for the application of systematic approaches. The aim of this paper is to describe the basic framework of a building thermal design optimization model by defining building design variables, a criterion of optimality, constraints, and a suitable thermal simulation model that can be integrated into the proper optimi...
Buildings with intermittent occupancy may not perform thermally the same as typical commercial and residential facilities. Thermal comfort requirements require careful envelope design coupled with the appropriate air-conditioning system... more
Buildings with intermittent occupancy may not perform thermally the same as typical commercial and residential facilities. Thermal comfort requirements require careful envelope design coupled with the appropriate air-conditioning system operation strategies. One of the most prominent examples of such buildings is mosques. Mosques are usually occupied five intermittent times day and night all year round. Like any other building, they
Research Interests: Design, Modeling, Energy Conservation, Operations Strategy, Saudi Arabia, and 14 moreBuilding Physics, Optimization, Conception, Building, Air Conditioning, Thermal comfort, Energy simulation, Thermal Performance, OPTIMIZATION TECHNIQUE, Receiving Operating Characteristic, Thermal design, Hot, Heating, and Direct search methods
ABSTRACT
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... 21·3°N latitude; 39·1°E longitude; 56 ft above sea level), Saudi Arabia, have climates similar to those of Phoenix, Arizona, and Houston, Texas, respectively, with some variations in the severity of the high summer temperatures for... more
... 21·3°N latitude; 39·1°E longitude; 56 ft above sea level), Saudi Arabia, have climates similar to those of Phoenix, Arizona, and Houston, Texas, respectively, with some variations in the severity of the high summer temperatures for Riyadh and the mildness of winters in Jeddah ...
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Research Interests:
Buildings are large consumers of energy in all countries. In harsh climatic conditions, a substantial share of energy goes to the air-conditioning of buildings. This air-conditioning load can be reduced through many means; notable among... more
Buildings are large consumers of energy in all countries. In harsh climatic conditions, a substantial share of energy goes to the air-conditioning of buildings. This air-conditioning load can be reduced through many means; notable among them is the proper design and selection of building envelope and its components.The use of thermal insulation in building walls and roof does not only
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Early design decisions can be significant in determining the thermal performance of buildings. However, necessary information to base such decisions is rarely available. Implementation of systematic approaches to the design process can... more
Early design decisions can be significant in determining the thermal performance of buildings. However, necessary information to base such decisions is rarely available. Implementation of systematic approaches to the design process can help in providing such information with the least cost. This article presents the development and validation of an optimization model that utilizes a direct search optimization technique incorporated
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Buildings are slowly replacing long-term investments that consume a lot of energy. Given current economic, as well as environmental constraints on energy resources, the energy issue plays an important role in the design and operation of... more
Buildings are slowly replacing long-term investments that consume a lot of energy. Given current economic, as well as environmental constraints on energy resources, the energy issue plays an important role in the design and operation of buildings. Careful long-term ...
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Research Interests:
A survey of current safety practices in the design of residential buildings in Saudi Arabia identified deficiencies in governance and design procedures. A systematic safety compliance checklist was developed to address these deficiencies... more
A survey of current safety practices in the design of residential buildings in Saudi Arabia identified deficiencies in governance and design procedures. A systematic safety compliance checklist was developed to address these deficiencies incorporating existing local safety instructions and international safety codes and standards. Checklist use is intended to ensure compliance with minimal safety requirements in the design of residential
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Research Interests:
The growth of demand for electrical energy in the rapidly expanding towns, cities and industries exceeds the growth of the power being made available. Therefore, energy conservation is becoming an increasingly important issue in Saudi... more
The growth of demand for electrical energy in the rapidly expanding towns, cities and industries exceeds the growth of the power being made available. Therefore, energy conservation is becoming an increasingly important issue in Saudi buildings. The objective of this study was to ...
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... of the characteristics of specific energy end uses in a building; 2. Assessment of the ... The ultimate goal is to assess the thermal performance of mosques subject to alternative design ... subjected to major modifications including... more
... of the characteristics of specific energy end uses in a building; 2. Assessment of the ... The ultimate goal is to assess the thermal performance of mosques subject to alternative design ... subjected to major modifications including the addition of a second floor and new lighting system ...
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... Mohammad S. Al-Homoud *, Adel A. Abdou, Ismail M. Budaiwi ... evolved and developed to a significant and variable extent in different parts of the Islamic world, influenced ... The three mosques of... more
... Mohammad S. Al-Homoud *, Adel A. Abdou, Ismail M. Budaiwi ... evolved and developed to a significant and variable extent in different parts of the Islamic world, influenced ... The three mosques of ''Owais Al-Qarni'', ''Al-Bukhari'', and ''Abu-Ubaidah'' will be respectively referred to as ...
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The thermal and energy performance of buildings depends on the thermal characteristics of the building envelope, and particularly on the thermal resistance of the insulation material used. The performance of the thermal insulation... more
The thermal and energy performance of buildings depends on the thermal characteristics of the building envelope, and particularly on the thermal resistance of the insulation material used. The performance of the thermal insulation material is mainly determined by its thermal conductivity, which describes the ability of heat to flow across the material in the presence of a differential temperature. The value of the thermal conductivity of a particular material is subject to variation, due to changes in both moisture content and temperature. In reality, thermal insulation in buildings is exposed to significant and continuous temperature variations, due to varying outdoor air temperature and solar radiation. However, when calculating cooling loads or performing energy analyses for buildings, most designers, if not all, use published or manufacturer-supplied values of thermal conductivity, which are normally evaluated at 24°C according to the ASTM standards. Currently, many types of ins...