Purpose The purpose of this paper is to present a methodology to quantify the solar energy potent... more Purpose The purpose of this paper is to present a methodology to quantify the solar energy potential for applying photovoltaic systems and find an efficient geometry for urban blocks to obtain a better quality of daylighting in terms of continuous daylight autonomy (DA) and spatial DA with less energy consumption. Design/methodology/approach The paper is based on a complete simulation of the topography and micro-climate of the area under study. Simulations were performed using ArcGIS and Rhinoceros and urban daylight (UD) and urban modeling interface plugin for a neighborhood in the region of Narmak in Tehran, Iran. Five configurations of a neighborhood were compared using simulations. Findings It was found that the impact of the geometrical form on daylight gain and energy consumption is significant and the terraced model is the most suitable form for obtaining a constant floor area ratio. Furthermore, it is an optimal form of urban blocks to gain the most energy through photovolta...
Extended Abstract Background and Objectives: The accurate prediction of the visual comfort zone i... more Extended Abstract Background and Objectives: The accurate prediction of the visual comfort zone in an indoor environment is difficult as it depends on so many parameters such as individual and environmental variables. It is important in large compact urban areas in which the density and shadow from neighboring buildings can limit the accessible daylighting in indoor spaces. Lighting is one of the most important environmental parameters in office spaces. The employees spend most of their hours in office spaces during the day, and most of their activities are based on receiving visual information from the surroundings. Besides, being satisfied with lighting conditions is one of the main elements that significantly affects the environment’s overall comfort level. Currently, in Iran, the visual comfort zone and the preferred illumination level are not defined for office spaces, and experts refer to the findings achieved in other countries. To assess the lighting in architectural spaces ...
To effectively design daylight in buildings, daylight availability data are necessary. Although t... more To effectively design daylight in buildings, daylight availability data are necessary. Although there is a great potential of daylight energy in Iran, its use is hindered by absence of measured data. In this paper the illuminance data on vertical south facing surfaces of Tehran were estimated using IESNA model. For this propose an illuminance measuring set was used for measuring vertical illuminances for standard times over 20 days at one minute intervals from 9 a.m. to 4 p.m. Then the measured data were compared with IESNA model calculated data. A regression model between measured and calculated data was developed which showed an acceptable linear correlation (r2=0.9535). Also mean hourly and monthly vertical illuminance was obtained from the new equation between measured and calculated data for a whole working year. To estimate daylight availability, frequency curves for vertical illuminance on south facing surfaces were created.
This study aimed to consider the field of energy saving in architectural design utilizing compute... more This study aimed to consider the field of energy saving in architectural design utilizing computer analysis and calculation. In this analysis, architecture design with an approach to optimizing energy consumption in the design of individual units, complex plan sites, and apartment sets using a computer was studied. Parameters affecting this research include the geometry of units, the arrangement and location relationship of buildings, and the form and height of apartment units. Different plans were produced by utilizing the initial plan of the designer and changing some aspects of it approved by the architectural design using the parametric modeling technique. Utilizing similar logic and a shift in the arrangement of buildings on the site, a variety of options were produced. By selecting existing and pre-designed plans, the optimal form was produced by computer. After computer-simulating each option, the energy analysis process was started for each building design. In the optimizati...
Purpose The purpose of this paper is to present a methodology to quantify the solar energy potent... more Purpose The purpose of this paper is to present a methodology to quantify the solar energy potential for applying photovoltaic systems and find an efficient geometry for urban blocks to obtain a better quality of daylighting in terms of continuous daylight autonomy (DA) and spatial DA with less energy consumption. Design/methodology/approach The paper is based on a complete simulation of the topography and micro-climate of the area under study. Simulations were performed using ArcGIS and Rhinoceros and urban daylight (UD) and urban modeling interface plugin for a neighborhood in the region of Narmak in Tehran, Iran. Five configurations of a neighborhood were compared using simulations. Findings It was found that the impact of the geometrical form on daylight gain and energy consumption is significant and the terraced model is the most suitable form for obtaining a constant floor area ratio. Furthermore, it is an optimal form of urban blocks to gain the most energy through photovolta...
One of the most distinguished activities in the field of energy conservation, is the provision of... more One of the most distinguished activities in the field of energy conservation, is the provision of regulations and standards for energy conservation in the building sector. In this paper, the nature of different types of approaches in controlling building design for energy efficiency purposes are discussed to make an evaluation of the existing regulation. Then, considering the recent international research
ABSTRACT Veranda as one of the main elements of spatial hierarchy in the traditional Iranian arch... more ABSTRACT Veranda as one of the main elements of spatial hierarchy in the traditional Iranian architecture is responsible for providing visual and thermal comfort and energy saving, in the interior and to some extent exterior besides enhancing both the privacy and accessibility as a transition space all around the building. In the Solar Decathlon China 2013 (SDC 2013) house of Team Iran, the roof of veranda has been designed to be a functional part of the above goals. It is composed of several reflector pieces gathered in each veranda frame forming a traditional Iranian pattern. In the southern veranda roof, the reflector pieces are able to rotate on a daily basis, based on the amount of interior light intensity and optimal function of the water wall located in the southern facade. Through the current article this particular veranda design and its detailed mechanisms are thoroughly discussed. Lighting simulations have been performed for the interior of the house, with and without the veranda, in addition to covering different states through the day during distinct seasonal conditions for five specified geometrical layouts in the former case. Meanwhile, a data reduction procedure has been applied and validated by the obtained data in order to get an overall numerical interpretation of each case. The results confirm that the original width between the pattern elements in the traditional layout forms the optimum configuration and the rotation mechanism in the southern veranda roof further enhances the interior visual comfort.
Purpose The purpose of this paper is to present a methodology to quantify the solar energy potent... more Purpose The purpose of this paper is to present a methodology to quantify the solar energy potential for applying photovoltaic systems and find an efficient geometry for urban blocks to obtain a better quality of daylighting in terms of continuous daylight autonomy (DA) and spatial DA with less energy consumption. Design/methodology/approach The paper is based on a complete simulation of the topography and micro-climate of the area under study. Simulations were performed using ArcGIS and Rhinoceros and urban daylight (UD) and urban modeling interface plugin for a neighborhood in the region of Narmak in Tehran, Iran. Five configurations of a neighborhood were compared using simulations. Findings It was found that the impact of the geometrical form on daylight gain and energy consumption is significant and the terraced model is the most suitable form for obtaining a constant floor area ratio. Furthermore, it is an optimal form of urban blocks to gain the most energy through photovolta...
Extended Abstract Background and Objectives: The accurate prediction of the visual comfort zone i... more Extended Abstract Background and Objectives: The accurate prediction of the visual comfort zone in an indoor environment is difficult as it depends on so many parameters such as individual and environmental variables. It is important in large compact urban areas in which the density and shadow from neighboring buildings can limit the accessible daylighting in indoor spaces. Lighting is one of the most important environmental parameters in office spaces. The employees spend most of their hours in office spaces during the day, and most of their activities are based on receiving visual information from the surroundings. Besides, being satisfied with lighting conditions is one of the main elements that significantly affects the environment’s overall comfort level. Currently, in Iran, the visual comfort zone and the preferred illumination level are not defined for office spaces, and experts refer to the findings achieved in other countries. To assess the lighting in architectural spaces ...
To effectively design daylight in buildings, daylight availability data are necessary. Although t... more To effectively design daylight in buildings, daylight availability data are necessary. Although there is a great potential of daylight energy in Iran, its use is hindered by absence of measured data. In this paper the illuminance data on vertical south facing surfaces of Tehran were estimated using IESNA model. For this propose an illuminance measuring set was used for measuring vertical illuminances for standard times over 20 days at one minute intervals from 9 a.m. to 4 p.m. Then the measured data were compared with IESNA model calculated data. A regression model between measured and calculated data was developed which showed an acceptable linear correlation (r2=0.9535). Also mean hourly and monthly vertical illuminance was obtained from the new equation between measured and calculated data for a whole working year. To estimate daylight availability, frequency curves for vertical illuminance on south facing surfaces were created.
This study aimed to consider the field of energy saving in architectural design utilizing compute... more This study aimed to consider the field of energy saving in architectural design utilizing computer analysis and calculation. In this analysis, architecture design with an approach to optimizing energy consumption in the design of individual units, complex plan sites, and apartment sets using a computer was studied. Parameters affecting this research include the geometry of units, the arrangement and location relationship of buildings, and the form and height of apartment units. Different plans were produced by utilizing the initial plan of the designer and changing some aspects of it approved by the architectural design using the parametric modeling technique. Utilizing similar logic and a shift in the arrangement of buildings on the site, a variety of options were produced. By selecting existing and pre-designed plans, the optimal form was produced by computer. After computer-simulating each option, the energy analysis process was started for each building design. In the optimizati...
Purpose The purpose of this paper is to present a methodology to quantify the solar energy potent... more Purpose The purpose of this paper is to present a methodology to quantify the solar energy potential for applying photovoltaic systems and find an efficient geometry for urban blocks to obtain a better quality of daylighting in terms of continuous daylight autonomy (DA) and spatial DA with less energy consumption. Design/methodology/approach The paper is based on a complete simulation of the topography and micro-climate of the area under study. Simulations were performed using ArcGIS and Rhinoceros and urban daylight (UD) and urban modeling interface plugin for a neighborhood in the region of Narmak in Tehran, Iran. Five configurations of a neighborhood were compared using simulations. Findings It was found that the impact of the geometrical form on daylight gain and energy consumption is significant and the terraced model is the most suitable form for obtaining a constant floor area ratio. Furthermore, it is an optimal form of urban blocks to gain the most energy through photovolta...
One of the most distinguished activities in the field of energy conservation, is the provision of... more One of the most distinguished activities in the field of energy conservation, is the provision of regulations and standards for energy conservation in the building sector. In this paper, the nature of different types of approaches in controlling building design for energy efficiency purposes are discussed to make an evaluation of the existing regulation. Then, considering the recent international research
ABSTRACT Veranda as one of the main elements of spatial hierarchy in the traditional Iranian arch... more ABSTRACT Veranda as one of the main elements of spatial hierarchy in the traditional Iranian architecture is responsible for providing visual and thermal comfort and energy saving, in the interior and to some extent exterior besides enhancing both the privacy and accessibility as a transition space all around the building. In the Solar Decathlon China 2013 (SDC 2013) house of Team Iran, the roof of veranda has been designed to be a functional part of the above goals. It is composed of several reflector pieces gathered in each veranda frame forming a traditional Iranian pattern. In the southern veranda roof, the reflector pieces are able to rotate on a daily basis, based on the amount of interior light intensity and optimal function of the water wall located in the southern facade. Through the current article this particular veranda design and its detailed mechanisms are thoroughly discussed. Lighting simulations have been performed for the interior of the house, with and without the veranda, in addition to covering different states through the day during distinct seasonal conditions for five specified geometrical layouts in the former case. Meanwhile, a data reduction procedure has been applied and validated by the obtained data in order to get an overall numerical interpretation of each case. The results confirm that the original width between the pattern elements in the traditional layout forms the optimum configuration and the rotation mechanism in the southern veranda roof further enhances the interior visual comfort.
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Papers by Rima Fayaz