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The combined effects of global warming and increasing urban heat islands (UHIs) on air temperature and heat stress in cities are notable physical and mental health implications for citizens. With research having shown the effective role of urban green spaces in decreasing urban heat, this study investigated the cooling effect of a large urban park on thermal comfort outside the park area, from psychological and physiological perspectives. The studied park is located in the center of Madrid and adjacent to UHI. The study was performed by conducting field measurements and a survey with questionnaires. The measurements made on six summer days (with two-week intervals) showed that the park’s cooling effect could decrease the air temperature by 2.4-2.8°C right up to the edge of the heat island (600m), and decrease the physiological equivalent temperature (PET) by about 3.9°C. By decreasing air temperature and PET, this park was also shown to increase the perceived thermal comfort (PTC) of the citizens from the psychological perspective in the defined area of effect. This perceived thermal comfort was found to have a significant inverse relationship with PET (P-value <0.05). The examination of cognitive maps drawn by citizens showed that out of the 145 respondents, 68.3% marked the park as the area that they perceive as having the greatest thermal comfort, and prefer as the place to spend time enjoying thermal comfort, irrespective of its distance from their location.
Farshid Aram; Ebrahim Solgi; Sepideh Baghaee; Ester Higueras García; Amir Mosavi; S. Band. How Parks Provide Thermal Comfort Perception in the Metropolitan Cores; A Case Study in Madrid Mediterranean Climatic Zone. 2020, 1 .
AMA StyleFarshid Aram, Ebrahim Solgi, Sepideh Baghaee, Ester Higueras García, Amir Mosavi, S. Band. How Parks Provide Thermal Comfort Perception in the Metropolitan Cores; A Case Study in Madrid Mediterranean Climatic Zone. . 2020; ():1.
Chicago/Turabian StyleFarshid Aram; Ebrahim Solgi; Sepideh Baghaee; Ester Higueras García; Amir Mosavi; S. Band. 2020. "How Parks Provide Thermal Comfort Perception in the Metropolitan Cores; A Case Study in Madrid Mediterranean Climatic Zone." , no. : 1.
Ebrahim Solgi; Ruwan Fernando; Zahra Hamedani. Experimental And Numerical Investigations On Optimal Phase Change Material Melting Temperature Utilized Either Alone Or With Night Ventilation. Proceedings of Building Simulation 2019: 16th Conference of IBPSA 2020, 1 .
AMA StyleEbrahim Solgi, Ruwan Fernando, Zahra Hamedani. Experimental And Numerical Investigations On Optimal Phase Change Material Melting Temperature Utilized Either Alone Or With Night Ventilation. Proceedings of Building Simulation 2019: 16th Conference of IBPSA. 2020; ():1.
Chicago/Turabian StyleEbrahim Solgi; Ruwan Fernando; Zahra Hamedani. 2020. "Experimental And Numerical Investigations On Optimal Phase Change Material Melting Temperature Utilized Either Alone Or With Night Ventilation." Proceedings of Building Simulation 2019: 16th Conference of IBPSA , no. : 1.
Zahra Hamedani; Ebrahim Solgi; Trevor Hine; Henry Skates. Revealing the relationships between luminous environment characteristics and physiological, ocular and performance measures: An experimental study. Building and Environment 2020, 172, 1 .
AMA StyleZahra Hamedani, Ebrahim Solgi, Trevor Hine, Henry Skates. Revealing the relationships between luminous environment characteristics and physiological, ocular and performance measures: An experimental study. Building and Environment. 2020; 172 ():1.
Chicago/Turabian StyleZahra Hamedani; Ebrahim Solgi; Trevor Hine; Henry Skates. 2020. "Revealing the relationships between luminous environment characteristics and physiological, ocular and performance measures: An experimental study." Building and Environment 172, no. : 1.
The effect of urban form on energy consumption has been the subject of various studies around the world. Having examined the effect of buildings on energy consumption, these studies indicate that the physical form of a city has a notable impact on the amount of energy consumed in its spaces. The present study identified the variables that affected energy consumption in residential buildings and analyzed their effects on energy consumption in four neighborhoods in Tehran: Apadana, Bimeh, Ekbatan-phase I, and Ekbatan-phase II. After extracting the variables, their effects are estimated with statistical methods, and the results are compared with the land surface temperature (LST) remote sensing data derived from Landsat 8 satellite images taken in the winter of 2019. The results showed that physical variables, such as the size of buildings, population density, vegetation cover, texture concentration, and surface color, have the greatest impacts on energy usage. For the Apadana neighborhood, the factors with the most potent effect on energy consumption were found to be the size of buildings and the population density. However, for other neighborhoods, in addition to these two factors, a third factor was also recognized to have a significant effect on energy consumption. This third factor for the Bimeh, Ekbatan-I, and Ekbatan-II neighborhoods was the type of buildings, texture concentration, and orientation of buildings, respectively.
Maryam Faroughi; Mehrdad Karimimoshaver; Farshid Aram; Ebrahim Solgi; Amir Mosavi; Narjes Nabipour; Kwok-Wing Chau. Computational modeling of land surface temperature using remote sensing data to investigate the spatial arrangement of buildings and energy consumption relationship. Engineering Applications of Computational Fluid Mechanics 2020, 14, 254 -270.
AMA StyleMaryam Faroughi, Mehrdad Karimimoshaver, Farshid Aram, Ebrahim Solgi, Amir Mosavi, Narjes Nabipour, Kwok-Wing Chau. Computational modeling of land surface temperature using remote sensing data to investigate the spatial arrangement of buildings and energy consumption relationship. Engineering Applications of Computational Fluid Mechanics. 2020; 14 (1):254-270.
Chicago/Turabian StyleMaryam Faroughi; Mehrdad Karimimoshaver; Farshid Aram; Ebrahim Solgi; Amir Mosavi; Narjes Nabipour; Kwok-Wing Chau. 2020. "Computational modeling of land surface temperature using remote sensing data to investigate the spatial arrangement of buildings and energy consumption relationship." Engineering Applications of Computational Fluid Mechanics 14, no. 1: 254-270.
Objective measures of visual discomfort have the potential to quantify the individual's sensations under discomfort glare conditions although such measures have yet to be circumscribed. The present study aimed to examine the extent to which visual discomfort sensation can be both operationalised and measured, utilising many light-induced physiological measures. These measurements were coupled with visual performance evaluations, in combination with conventional measures of photometric measurements and subjective evaluations. The variables measured were mean Pupil Diameter, Pupillary Unrest Index, Blink Rate, Blink Amplitude, number of fixational eye movements during reading (Fixation Rate), and average Fixation Duration, as well as Combined Visual Performance. The results of this study indicate that most of these parameters show significant differences between high and low lighting conditions. In particular, participants in high discomfort conditions exhibited a higher Fixation Rate, lower Blink Rate, higher Blink Amplitude and a smaller Pupil Diameter than those in both low and medium discomfort conditions. In other words, the studied physiological measures can be used as an index of high levels of glare or visual discomfort. In addition, regarding subjective evaluations, the results of correlation analysis suggest that visual comfort level ratings may provide a more reliable indicator of visual discomfort sensation.
Zahra Hamedani; Ebrahim Solgi; Trevor Hine; Henry Skates; Gillian Isoardi; Ruwan Fernando. Lighting for work: A study of the relationships among discomfort glare, physiological responses and visual performance. Building and Environment 2019, 167, 106478 .
AMA StyleZahra Hamedani, Ebrahim Solgi, Trevor Hine, Henry Skates, Gillian Isoardi, Ruwan Fernando. Lighting for work: A study of the relationships among discomfort glare, physiological responses and visual performance. Building and Environment. 2019; 167 ():106478.
Chicago/Turabian StyleZahra Hamedani; Ebrahim Solgi; Trevor Hine; Henry Skates; Gillian Isoardi; Ruwan Fernando. 2019. "Lighting for work: A study of the relationships among discomfort glare, physiological responses and visual performance." Building and Environment 167, no. : 106478.
This empirical study investigates large urban park cooling effects on the thermal comfort of occupants in the vicinity of the main central park, located in Madrid, Spain. Data were gathered during hot summer days, using mobile observations and a questionnaire. The results showed that the cooling effect of this urban park of 125 ha area at a distance of 150 m could reduce air temperatures by an average of 0.63 °C and 1.28 °C for distances of 380 m and 665 meters from the park. Moreover, the degree of the physiological equivalent temperature (PET) index at a distance of 150 meters from the park is on average 2 °C PET and 2.3 °C PET less compared to distances of 380 m and 665 m, respectively. Considering the distance from the park, the correlation between occupant perceived thermal comfort (PTC) and PET is inverse. That is, augmenting the distance from the park increases PET, while the extent of PTC reduces accordingly. The correlation between these two factors at the nearest and furthest distances from the park is meaningful (p-value < 0.05). The results also showed that large-scale urban parks generally play a significant part in creating a cognitive state of high-perceived thermal comfort spaces for residents.
Farshid Aram; Ebrahim Solgi; Ester Higueras García; Amir Mosavi; Annamária R. Várkonyi-Kóczy. The Cooling Effect of Large-Scale Urban Parks on Surrounding Area Thermal Comfort. Energies 2019, 12, 3904 .
AMA StyleFarshid Aram, Ebrahim Solgi, Ester Higueras García, Amir Mosavi, Annamária R. Várkonyi-Kóczy. The Cooling Effect of Large-Scale Urban Parks on Surrounding Area Thermal Comfort. Energies. 2019; 12 (20):3904.
Chicago/Turabian StyleFarshid Aram; Ebrahim Solgi; Ester Higueras García; Amir Mosavi; Annamária R. Várkonyi-Kóczy. 2019. "The Cooling Effect of Large-Scale Urban Parks on Surrounding Area Thermal Comfort." Energies 12, no. 20: 3904.
Ebrahim Solgi; Zahra Hamedani; Ruwan Fernando; Behrouz Mohammad Kari. A parametric study of phase change material characteristics when coupled with thermal insulation for different Australian climatic zones. Building and Environment 2019, 163, 1 .
AMA StyleEbrahim Solgi, Zahra Hamedani, Ruwan Fernando, Behrouz Mohammad Kari. A parametric study of phase change material characteristics when coupled with thermal insulation for different Australian climatic zones. Building and Environment. 2019; 163 ():1.
Chicago/Turabian StyleEbrahim Solgi; Zahra Hamedani; Ruwan Fernando; Behrouz Mohammad Kari. 2019. "A parametric study of phase change material characteristics when coupled with thermal insulation for different Australian climatic zones." Building and Environment 163, no. : 1.
This empirical study investigates large urban park cooling effects on the thermal comfort of occupants in the vicinity of the main central park, located in Madrid, Spain. Data were gathered during hot summer days, using mobile observations and a questionnaire. The results showed that the cooling effect of this urban park of 140 ha area at a distance of 150 m is able to reduce temperature by an average of 0.63°C and 1.28°C for distances of 380 m and of 665 meters from the park. Moreover, the degree of the Physiological Equivalent Temperature (PET) index at a distance of 150 meters from the park is on average 2°C PET and 2.3°C PET less compared to distances of 380 m and 665 m, respectively. Considering distance from the park, the correlation between occupant Perceived Thermal Comfort (PTC) and PET is inverse. That is, augmenting the distance from park increases PET, while the extent of PTC reduces accordingly. The correlation between these two factors at the nearest and furthest distances from the park is meaningful (P-value <0/05). The results also showed that large-scale urban parks generally play a significant part in creating a cognitive state of high-perceived thermal comfort spaces for residents.
Farshid Aram; Ebrahim Solgi; Ester Higueras Garcia; Amir Mosavi; Annamaria R. Varkonyi-Koczy. The Cooling Effect of Large-Scale Urban Parks on Surrounding Area Thermal Comfort. 2019, 1 .
AMA StyleFarshid Aram, Ebrahim Solgi, Ester Higueras Garcia, Amir Mosavi, Annamaria R. Varkonyi-Koczy. The Cooling Effect of Large-Scale Urban Parks on Surrounding Area Thermal Comfort. . 2019; ():1.
Chicago/Turabian StyleFarshid Aram; Ebrahim Solgi; Ester Higueras Garcia; Amir Mosavi; Annamaria R. Varkonyi-Koczy. 2019. "The Cooling Effect of Large-Scale Urban Parks on Surrounding Area Thermal Comfort." , no. : 1.
The continuing importance of energy conservation in the building sector has drawn major attention to energy audits of existing buildings in different climates. In this paper, the energy conservation potential of a residential building located in Iran’s cold climate was investigated through an analysis of its actual energy consumption and through computer simulation. The building base-load was determined using a linear regression method based on existing energy bills, and was used to validate the computer simulation of its energy usage. The impact of typical energy saving solutions was evaluated for three cost refurbishment scenarios: low, medium and high. The results show that the existing construction and envelope materials fail to meet the national standards of Iran, but insulating the envelope was found to be a more cost-effective measure than modifying the windows. The results also demonstrate that although the use of energy-saving solutions has a significant impact on energy consumption, even the most economic solutions investigated will have a payback period longer than one decade. Thus, with current energy prices the reviewed energy conservation strategies are not economically justified in Iran from the consumer perspective, as investment in the methods considered typical in other parts of the world will not show a return for at least a half-century.
Ebrahim Solgi; Zahra Hamedani; Shahab Sherafat; Ruwan Fernando; Farshid Aram. The Viability of Energy Auditing in Countries with Low Energy Cost: A Case Study of a Residential Building in Cold Climates. Designs 2019, 3, 42 .
AMA StyleEbrahim Solgi, Zahra Hamedani, Shahab Sherafat, Ruwan Fernando, Farshid Aram. The Viability of Energy Auditing in Countries with Low Energy Cost: A Case Study of a Residential Building in Cold Climates. Designs. 2019; 3 (3):42.
Chicago/Turabian StyleEbrahim Solgi; Zahra Hamedani; Shahab Sherafat; Ruwan Fernando; Farshid Aram. 2019. "The Viability of Energy Auditing in Countries with Low Energy Cost: A Case Study of a Residential Building in Cold Climates." Designs 3, no. 3: 42.
Reflective insulation systems are among the most effective energy efficient products for application in arid climates. Previous studies focused on reflective air spaces (rather than reflective insulation systems) in laboratory steady-state conditions, and different defects and limitations in those investigations have made it necessary to probe for patterns to address the research key questions and generalization of the results. Thus, in this study a numerical simulation approach using ISO 15099 is utilized for performing calculations in enclosed reflective air spaces. Additionally, application of ISO 15099 is compared with ASHRAE experimental data, and related differences and limitations are demonstrated. The optimized configurations of the reflective insulation systems in wall application are explored, and an unprecedented extensive climatic evaluation is conducted. Moreover, the influences of extreme climatic conditions and orientation factor on thermal performance of various reflective configurations are assessed. It is found that systems with a 20 mm air gap adjacent to reflective surfaces are the most appropriate systems in the wall application. In addition, thermal performance of these systems is highly affected by environmental conditions. Finally, the optimized orientations in each configuration are presented.
Arash Pourghorban; Behrouz Mohammad Kari; Ebrahim Solgi. Assessment of reflective insulation systems in wall application in hot-arid climates. Sustainable Cities and Society 2019, 52, 101734 .
AMA StyleArash Pourghorban, Behrouz Mohammad Kari, Ebrahim Solgi. Assessment of reflective insulation systems in wall application in hot-arid climates. Sustainable Cities and Society. 2019; 52 ():101734.
Chicago/Turabian StyleArash Pourghorban; Behrouz Mohammad Kari; Ebrahim Solgi. 2019. "Assessment of reflective insulation systems in wall application in hot-arid climates." Sustainable Cities and Society 52, no. : 101734.
Considering citizens’ perceptions of their living environment is very helpful in making the right decisions for city planners who intend to build a sustainable society. Mental map analyses are widely used in understanding the level of perception of individuals regarding the surrounding environment. The present study introduces Aram Mental Map Analyzer (AMMA), an open-source program, which allows researchers to use special features and new analytical methods to receive outputs in numerical data and analytical maps with greater accuracy and speed. AMMA performance is contingent upon two principles of accuracy and complexity, the accuracy of the program is measured by Accuracy Placed Landmarks (APL) and General Orientation (GO), which respectively analyses the landmark placement accuracy and the main route mapping accuracy. Also, the complexity section is examined through two analyses Cell Percentage (CP) and General Structure (GS), which calculates the complexity of citizens’ perception of space based on the criteria derived from previous studies. AMMA examines all the dimensions and features of the graphic maps and its outputs have a wide range of valid and differentiated information, which is tailored to the research and information subject matter that is required.
Farshid Aram; Ebrahim Solgi; Ester Higueras García; Danial Mohammadzadeh S.; Amir Mosavi; Shahaboddin Shamshirband. Design and Validation of a Computational Program for Analysing Mental Maps: Aram Mental Map Analyzer. Sustainability 2019, 11, 3790 .
AMA StyleFarshid Aram, Ebrahim Solgi, Ester Higueras García, Danial Mohammadzadeh S., Amir Mosavi, Shahaboddin Shamshirband. Design and Validation of a Computational Program for Analysing Mental Maps: Aram Mental Map Analyzer. Sustainability. 2019; 11 (14):3790.
Chicago/Turabian StyleFarshid Aram; Ebrahim Solgi; Ester Higueras García; Danial Mohammadzadeh S.; Amir Mosavi; Shahaboddin Shamshirband. 2019. "Design and Validation of a Computational Program for Analysing Mental Maps: Aram Mental Map Analyzer." Sustainability 11, no. 14: 3790.
Urban green spaces are considered an appropriate way to reduce urban heat island effects and provide comfort to the nearby occupants. In addition to cooling the actual space, urban green spaces are also able to influence the surrounding area, and this phenomenon is called the urban green space cooling effect. The most important issues with regard to the cooling effects of urban green spaces are the intensity and density of the cooling, which can play a major role for urban designers and planners in dealing with urban heat island. This article reviews the latest studies that have examined the cooling effects of urban green spaces in recent years. Based on the method of evaluation of their samples, the studies are divided into three groups. The first category consists of research into a set of urban green spaces in one part of or in an entire city, mainly conducted through remote sensing and satellite maps. The second category investigates city parks or several urban parks with recognizable shapes and locations. In this section, information was mainly gathered by virtue of field observations. The third category relates to studies in which a part of urban space according to different scenarios of green space placement was modeled by simulation. The results of the present study illustrate that the highest cooling effect distance and cooling effect intensity are for large urban parks with an area of more than 10 ha; however, in addition to the area, the natural elements and qualities of the urban green spaces, as well as climate characteristics, highly inform the urban green space cooling effect.
Farshid Aram; Ester Higueras Garcia; Ebrahim Solgi; Soran Mansournia. Urban green space cooling effect in cities. Heliyon 2019, 5, e01339 .
AMA StyleFarshid Aram, Ester Higueras Garcia, Ebrahim Solgi, Soran Mansournia. Urban green space cooling effect in cities. Heliyon. 2019; 5 (4):e01339.
Chicago/Turabian StyleFarshid Aram; Ester Higueras Garcia; Ebrahim Solgi; Soran Mansournia. 2019. "Urban green space cooling effect in cities." Heliyon 5, no. 4: e01339.
Lighting in office environments has many benefits, ranging from decreasing energy consumption to enhancing human health and well-being. However, visual discomfort such as glare has a negative impact on occupants, causing a sensation of annoyance or pain, thereby reducing user satisfaction and productivity. Current methods and metrics established for evaluating glare are mainly derived from physical measurements of luminance distribution and conventional subjective evaluations. However, significant inconsistencies and inaccuracies reported by a number of comparative studies highlight the need for a more objective method in the derivation of glare indices. This paper reviews the existing literature to provide a holistic overview of implemented methods in measuring light-induced physiological responses to objectify perceived glare. Physiological responses investigated within the reviewed literature include: pupil size, eye movement, gaze direction, degree of eye-opening, and blink rate. Research outcomes regarding each individual response are then analysed based upon their experimental methodology, the metric utilized for their analysis, and confounding variables that may contribute to misleading results. Through this analysis, established factors and those requiring further evidence are identified.
Zahra Hamedani; Ebrahim Solgi; Henry Skates; Trevor Hine; Ruwan Fernando; Joshua Lyons; Karine Dupre. Visual discomfort and glare assessment in office environments: A review of light-induced physiological and perceptual responses. Building and Environment 2019, 153, 267 -280.
AMA StyleZahra Hamedani, Ebrahim Solgi, Henry Skates, Trevor Hine, Ruwan Fernando, Joshua Lyons, Karine Dupre. Visual discomfort and glare assessment in office environments: A review of light-induced physiological and perceptual responses. Building and Environment. 2019; 153 ():267-280.
Chicago/Turabian StyleZahra Hamedani; Ebrahim Solgi; Henry Skates; Trevor Hine; Ruwan Fernando; Joshua Lyons; Karine Dupre. 2019. "Visual discomfort and glare assessment in office environments: A review of light-induced physiological and perceptual responses." Building and Environment 153, no. : 267-280.
Farshid Aram; Ebrahim Solgi; Gordon Holden. The role of green spaces in increasing social interactions in neighborhoods with periodic markets. Habitat International 2019, 84, 24 -32.
AMA StyleFarshid Aram, Ebrahim Solgi, Gordon Holden. The role of green spaces in increasing social interactions in neighborhoods with periodic markets. Habitat International. 2019; 84 ():24-32.
Chicago/Turabian StyleFarshid Aram; Ebrahim Solgi; Gordon Holden. 2019. "The role of green spaces in increasing social interactions in neighborhoods with periodic markets." Habitat International 84, no. : 24-32.
Night ventilation (NV) is a productive passive cooling technique which demonstrates a high potential for reducing cooling loads and improving thermal comfort; however, its efficiency is highly contingent upon such factors as thermal energy storage. In the current building industry where utilizing lightweight structures is of paramount importance, the usage of Phase Change Materials (PCMs) as efficient lightweight thermal energy storage for NV is becoming rapidly prevalent. Although the effects of the independent variables of NV and PCMs are well-known, their interrelationship has not been clearly established. This study therefore set out to explore the correlation between PCM quantity and transition temperatures, as well as NV airflow and delta temperature, thermal insulation and the resulting energy saving. To do so, a model, validated utilizing a full-scale calorimeter, was employed for numerical simulations of three different climates. It was found that in tropical climates, coupling NV with PCMs was non-effective. Nevertheless, in sub-tropical and hot-dry climates, cooling thermostat set-points, as well as thermal insulation play a key role in defining the optimal PCM temperature utilized for NV. The optimal transitional temperature, however, is not dependent on the PCM thicknesses, but thickening PCMs raises energy saving. The use of well-insulated envelopes increases NV efficiency and stabilizes the optimal PCM transition temperature, defined as 1 °C lower than the cooling set-point temperature. It is also concluded that the importance of thermal insulation in raising NV efficiency is greater than PCM volume. Furthermore, low delta temperature and high airflow result in increasing NV efficiency; however, these phenomena have no effect on the optimal PCM meting temperature.
Ebrahim Solgi; Zahra Hamedani; Ruwan Fernando; Behrouz Mohammad Kari; Henry Skates. A parametric study of phase change material behaviour when used with night ventilation in different climatic zones. Building and Environment 2018, 147, 327 -336.
AMA StyleEbrahim Solgi, Zahra Hamedani, Ruwan Fernando, Behrouz Mohammad Kari, Henry Skates. A parametric study of phase change material behaviour when used with night ventilation in different climatic zones. Building and Environment. 2018; 147 ():327-336.
Chicago/Turabian StyleEbrahim Solgi; Zahra Hamedani; Ruwan Fernando; Behrouz Mohammad Kari; Henry Skates. 2018. "A parametric study of phase change material behaviour when used with night ventilation in different climatic zones." Building and Environment 147, no. : 327-336.
Ebrahim Solgi; Sina Memarian; Ghazaleh Nemati Moud. Financial viability of PCMs in countries with low energy cost: A case study of different climates in Iran. Energy and Buildings 2018, 173, 128 -137.
AMA StyleEbrahim Solgi, Sina Memarian, Ghazaleh Nemati Moud. Financial viability of PCMs in countries with low energy cost: A case study of different climates in Iran. Energy and Buildings. 2018; 173 ():128-137.
Chicago/Turabian StyleEbrahim Solgi; Sina Memarian; Ghazaleh Nemati Moud. 2018. "Financial viability of PCMs in countries with low energy cost: A case study of different climates in Iran." Energy and Buildings 173, no. : 128-137.
Ebrahim Solgi; Zahra Hamedani; Ruwan Fernando; Henry Skates; Nnamdi Ezekiel Orji. A literature review of night ventilation strategies in buildings. Energy and Buildings 2018, 173, 337 -352.
AMA StyleEbrahim Solgi, Zahra Hamedani, Ruwan Fernando, Henry Skates, Nnamdi Ezekiel Orji. A literature review of night ventilation strategies in buildings. Energy and Buildings. 2018; 173 ():337-352.
Chicago/Turabian StyleEbrahim Solgi; Zahra Hamedani; Ruwan Fernando; Henry Skates; Nnamdi Ezekiel Orji. 2018. "A literature review of night ventilation strategies in buildings." Energy and Buildings 173, no. : 337-352.
In order to examine and compare the efficiency of earth to air heat exchanger (EAHE) systems in hot-arid (Yazd) and cold (Hamadan) climates in Iran a steady state model was developed to evaluate the impact of various parameters including inlet air temperatures, pipe lengths and ground temperatures on the cooling and heating potential of EAHEs in both climates. The results demonstrated the ability of the system to not only improve the average temperature and decrease the temperature fluctuation of the outlet air temperature of EAHE, but also to trigger considerable energy saving. It was found that in both climates, the system is highly utilized for pre-heating, and its usage is unfeasible in certain periods throughout the year. In winter, EAHEs have the potential of increasing the air temperature in the range of 0.2–11.2 °C and 0.1–17.2 °C for Yazd and Hamadan, respectively. However, in summer, the system decreases the air temperature for the aforementioned cities in the range of 1.3–11.4 °C and 5.7–11.1 °C, respectively. The system ascertains to be more efficient in the hot-arid climate of Yazd, where it can be used on 294 days of the year, leading to 50.1–63.6% energy saving, when compared to the cold climate of Hamadan, where it can be used on 225 days of the year resulting in a reduction of energy consumption by 24.5–47.9%.Full Tex
Faezeh Fazlikhani; Hossein Goudarzi; Ebrahim Solgi. Numerical analysis of the efficiency of earth to air heat exchange systems in cold and hot-arid climates. Energy Conversion and Management 2017, 148, 78 -89.
AMA StyleFaezeh Fazlikhani, Hossein Goudarzi, Ebrahim Solgi. Numerical analysis of the efficiency of earth to air heat exchange systems in cold and hot-arid climates. Energy Conversion and Management. 2017; 148 ():78-89.
Chicago/Turabian StyleFaezeh Fazlikhani; Hossein Goudarzi; Ebrahim Solgi. 2017. "Numerical analysis of the efficiency of earth to air heat exchange systems in cold and hot-arid climates." Energy Conversion and Management 148, no. : 78-89.
Night purge ventilation is an effective technique for passive cooling, which is typically used in office buildings with the aim of reducing the daytime temperature, and thereby reducing the cooling load of HVAC systems. This method uses the cool of the night to release the warmth stored in the thermal mass during the day. That is, this system optimizes the energy storage properties of thermal masses to provide thermal comfort in interior spaces. The purpose of this study is to determine the impact of the use of night purge ventilation in conjunction with PCMs on the indoor thermal conditions of a typical office building located in hot-arid climates. In this article, the impacts of optimal night ventilation on the heat flushing operation, inside room temperature and element thermal conditions are all evaluated. It was found that combining PCMs with night ventilation will significantly improve indoor thermal conditions; however, results vary for different days in general and different structural elements in particular. Moreover, the application of PCMs can reduce night ventilation system problem of occupants feeling cold in the morning, whereas in the majority of work hours the temperature of inside element faces is approximately 0.5 °C lower than the room temperature, both of which improve thermal comfort.Griffith Sciences, Griffith School of EnvironmentFull Tex
Ebrahim Solgi; Behrouz Kari; Rima Fayaz; Helia Taheri. The impact of phase change materials assisted night purge ventilation on the indoor thermal conditions of office buildings in hot-arid climates. Energy and Buildings 2017, 150, 488 -497.
AMA StyleEbrahim Solgi, Behrouz Kari, Rima Fayaz, Helia Taheri. The impact of phase change materials assisted night purge ventilation on the indoor thermal conditions of office buildings in hot-arid climates. Energy and Buildings. 2017; 150 ():488-497.
Chicago/Turabian StyleEbrahim Solgi; Behrouz Kari; Rima Fayaz; Helia Taheri. 2017. "The impact of phase change materials assisted night purge ventilation on the indoor thermal conditions of office buildings in hot-arid climates." Energy and Buildings 150, no. : 488-497.
Ebrahim Solgi; Rima Fayaz; Behrouz Kari. Cooling load reduction in office buildings of hot-arid climate, combining phase change materials and night purge ventilation. Renewable Energy 2016, 85, 725 -731.
AMA StyleEbrahim Solgi, Rima Fayaz, Behrouz Kari. Cooling load reduction in office buildings of hot-arid climate, combining phase change materials and night purge ventilation. Renewable Energy. 2016; 85 ():725-731.
Chicago/Turabian StyleEbrahim Solgi; Rima Fayaz; Behrouz Kari. 2016. "Cooling load reduction in office buildings of hot-arid climate, combining phase change materials and night purge ventilation." Renewable Energy 85, no. : 725-731.