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        1 - Evaluation of Thermal Comfort Zone in Naturally Ventilated Offices in Bushehr
        Roza Vakilinezhad Jalil Shaeri
        Providing thermal comfort is one of the most important goals in building design, which accounts for a large amount of energy consumption. In-office buildings, thermal comfort has a significant impact on indoor quality and staff productivity. In many countries, several m More
        Providing thermal comfort is one of the most important goals in building design, which accounts for a large amount of energy consumption. In-office buildings, thermal comfort has a significant impact on indoor quality and staff productivity. In many countries, several methods and standards have been proposed to determine the thermal comfort zone for air conditioning and naturally ventilated buildings. In Iran, the lack of appropriate standards defining thermal comfort zones determines the necessity of research in this field. The present paper aims to determine the thermal comfort range in Bushehr office buildings with natural ventilation. Environmental indices (temperature, humidity, wind speed) were measured through field studies using data loggers in the three days from 19 to 21 March while 180 questionnaires were answered simultaneously by users. Based on the results, 81.1% of the subjects are comfortable with the overall thermal conditions. Using SPSS software, descriptive statistics analysis was performed between measured data and individual responses. During the research time in March, the average temperature is 19 ° C and the relative humidity is 65%. In this way, the comfort range is calculated based on two proposed equations for thermal comfort in different cities of Iran and compared with field measurements. According to the results of high temperature, the comfort zone in Bushehr office spaces is 28.6 degrees Celsius which is higher than the values from proposed equations for thermal comfort in Iran. There is a difference of 1.13 degrees between the neutral temperatures obtained by the two methods. More than 79% of the people are satisfied with the flow of air while 63% of the moisture content is satisfied. This shows the greater importance of the airflow in creating a feeling of comfort on the amount of moisture. In the case of thermal preference, 40% of people do not want a change in temperature, and 51.6% prefer small changes. In the case of humidity, 63.2% of the moisture conditions are satisfied and their 45% tendency to no change in moisture conditions. While 47.8% of people preferred modest changes in humidity (slightly damp or slightly moist), 32.4% prefer the environment without changing the airflow, and 52% prefer the air to more or more. Thus, despite the establishment of comfort conditions, the thermal preference for more than 36% of people is slightly lower and 17% less humidity and 52% more airflow. Regarding heat sensation and thermal preference, a suitable solution can be selected for flexible space design. The results of the questionnaires and the evaluation of behavioral parameters showed that the most important choice of the individuals to adapt to the thermal conditions is to stay in places with the possibility of wind flow. This issue shows the importance of the application of natural ventilation and its feasibility in space design. Therefore, to accurately determine the exact range of thermal comfort in Bushehr city, it is necessary to conduct extensive field study research in different seasons of the year in natural building ventilation buildings defining accurate thermal comfort zone. Manuscript profile
      • Open Access Article

        2 - An Efficient Double Skin Façade for an Office Building in Shiraz City
        Ramin movahed pour Maria Kord Jamshidi Mohammadjavad Mahdavinejad
      • Open Access Article

        3 - Investigating the Effects of Environmental Factors on Office Buildings’ Indoor Environment Quality in Iran’s Cold Climate (Case study: Kermanshah)
        Maryam Ansarimanesh Nazanin Nasrollahi
      • Open Access Article

        4 - Investigating the Effect of Different Energy Saving Strategies on Energy Rating of Building by Design Builder Software (Case Study: Office Building)
        Afshin Fathalian Hadi Kargarsharif
        Background and Objective: Reducing fossil energy resources, the environmental impact of high energy consumption and increasing the energy consumption in the building section, has increased the importance of attention to building energy consumption in the country. Provid More
        Background and Objective: Reducing fossil energy resources, the environmental impact of high energy consumption and increasing the energy consumption in the building section, has increased the importance of attention to building energy consumption in the country. Providing the standard of building energy consumption in our country is one of the important activities in this regard. This study aimed to determine the effect of different strategies to reduce energy consumption in the energy classification of office buildings as a case study by Design Builder software. Method: In this study, the total energy consumption of of an office building in Semnan climate was simulated by Design Builder software and the results obtained by the software, with the actual energy consumption of the building in 2016, which was obtained from the energy bills (electricity and gas) of the building, were validated. Then, using the energy rating of building, different strategies for reducing energy consumption were simulated and compared with the existing situation. Findings: Using energy simulation software, various energy efficiency strategies such as using external horizontal shading and removing internal shading, replacing windows with low-emitting double-glazed windows instead of single-glass windows and installing a thermal insulation in the external wall of the building were investigated that 15.2, 18.4 and 8.2% reduction in energy consumption achived compared to normal case, respectively. Then, the intensity of building energy consumption for each of the proposed strategies were calculated and the energy rating was determined for each. Discussion and Conclusion: The results showed that the replacement of external shading instead of internal shading had the least amount of savings and had no effect on the change in energy rating and the use of a combination of double glazing instead of single-walled and thermal insulation in the outer wall of the building while upgrading to the classification, the optimal suggested mode. Finally, the results of this study showed that in the case of accurate simulation of existing buildings and then validation the effects of different strategies on energy rating and consumption can be predicted accurately. Manuscript profile
      • Open Access Article

        5 - Energy simulation of office building with current materials in Semnan climate
        afshin fathalian Hadi Kargar Sharifabad
        One of modern world challenges is saving energy consumption. Multiple increase in energy price on one hand and limitation of fossil fuel as well as its consequent bio environmental pollution on the other hand have shown the necessity of sensible energy application. Mean More
        One of modern world challenges is saving energy consumption. Multiple increase in energy price on one hand and limitation of fossil fuel as well as its consequent bio environmental pollution on the other hand have shown the necessity of sensible energy application. Meanwhile energy consumption in construction sector is so high that saving even as little as possible in this section will have significant effect on efficiency rate of no renewable sources. Considering multiple relevant parameters in energy consumption with no application of simulating tools cannot permit reasonable decisions on designing building parts. In this research the proportion of annual energy consumption of office building located in Semnan city climate with application of design builder software has been simulated. Accuracy of results from simulation has been validated with recorded numbers at annual electricity and gas bills at the building. Manuscript profile
      • Open Access Article

        6 - Investigation of the effect of roof insulation and double wall effect on the energy consumption of office building in Garmsar city with design-builder software
        Mehdi Shahhoseini Hadi Kargar Sharifabad
        In today's world, the national security of most countries has depended on secure energy access, and therefore the optimum use of it has been the focus of attention of many statesmen and researchers. Expansion of consumption in the household sector and waste of energy in More
        In today's world, the national security of most countries has depended on secure energy access, and therefore the optimum use of it has been the focus of attention of many statesmen and researchers. Expansion of consumption in the household sector and waste of energy in the urban community are among the obvious reasons for the rapid growth of energy consumption in the national economy. For this reason, energy consumption in the building sector needs to be considered. In this paper, after simulating an office building in Garmsar City with Design-Builder Software and validating it, the effect of the roof insulation and double wall parameters on the energy consumption has been investigated. The results show that the roof insulation and the use of a double wall can have a significant impact on building energy consumption. Manuscript profile
      • Open Access Article

        7 - Building office energy modelling in Garmsar with designbuilder and study the impact of different solutions in energy optimization
        Mehdi Shahhoseini Hadi Kargar Sharifabad
        The contribution of the building sector to the energy consumption of countries is significant, so in the last few decades, in most industrialized countries, basic measures have been taken to reform the consumption model , using various tools including regulations and cr More
        The contribution of the building sector to the energy consumption of countries is significant, so in the last few decades, in most industrialized countries, basic measures have been taken to reform the consumption model , using various tools including regulations and criteria . In this study, the use of the type of material used in the walls of the city buildings in the Garmsar city building was analyzed. The comparison of the heat transfer coefficient of each material used on the external walls of the building is modeled and the building is evaluated with basic materials according to the climatic conditions of the city. Finally, using new materials in the outer wall and ceiling, building with double wall is a priority in reducing energy consumption. Manuscript profile
      • Open Access Article

        8 - Investigating the effect of replacing a double glass window with snigle window in an office building in the Semnan climate with Designbuilder software
        afshin fathalian Hadi Kargar Sharifabad
        The main cause of the energy dissipation in buildings in the country, in addition to design style of employment in the town of Bad materials in different parts of the building. It can be simple solutions to the implementation of some of the loss of a significant amount More
        The main cause of the energy dissipation in buildings in the country, in addition to design style of employment in the town of Bad materials in different parts of the building. It can be simple solutions to the implementation of some of the loss of a significant amount of renewable energy. In this study , optimize energy consumption in an administrative building in Semnan province climate in a bid to replace the window glass - with the designated low dispatch in foreign wall instead of single - walled window with the situation by simulator design builder software was investigated. Results of energy - saving by 12 percent annually in the coolant load, 2 percent in heating load and 11 percent of the total sample building in loads. Manuscript profile
      • Open Access Article

        9 - Thermal Behavior of Double Skin Facade in Terms of Energy Consumption in the Climate of North of Iran-Rasht
        Narges Rezazadeh Hossein Medi
      • Open Access Article

        10 - Comparative Study on the Influence of Window To Wall Ratio on Energy Consumption and Ventilation Performance in Office Building of Temperate Humid Climate: a Case Study in Rash
        Seyedeh Hadiseh Sedigh Ziabari Hassan Zolfagharzadeh Farzaneh Asadi Malek Jahan Seyede Mamak Salavatian
      • Open Access Article

        11 - Dynamic Envelope and Control Shading Pattern for Office Buildings Visual Comfort in Tehran
        Nasim Fazeli Mohammadjavad Mahdavinejad Mohammadreza Bemanian