Volume 8, Issue 1 (Spring 2018)
Abstract
Aims: In office buildings, high quality of indoor environment increases staffs’ efficacy and makes the economy flourished, while lack of it causes staffs’ dissatisfaction and reduces their efficacy. Many factors contribute to the creation of a qualified indoor environment, one of which is proper ventilation. One of the important factors in determining the ventilation rate is the amount of carbon dioxide in the space. Hence, the aim of this study was to determine the proper range of carbon dioxide to optimize indoor environmental quality in office buildings of Kermanshah.
Materials and Methods: The present study was conducted from February15 to March 15, 2011, using field methods, measuring the carbon dioxide level, and leading the inventory in applied and quantitative research employees of 10 office buildings in Kermanshah to examine the proper range of carbon dioxide in office buildings of Kermanshah. To compile the questionnaire, a questionnaire in the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) was used, but according to the type of research and coverage of the questions, some changes were made by adding some related questions. The data were analyzed by SPSS 16 software.
Findings: In all buildings, 71.6% of people were satisfied with air quality and ventilation. In most buildings, carbon dioxide was in the standard range except for the building 8. The air quality satisfaction in this building was 59%.Building 3 had the best condition.
Conclusion: The proper range of carbon dioxide in the office buildings of Kermanshah is less values than 1200ppm.
Volume 11, Issue 1 (Spring 2021)
Abstract
For this purpose, field study and data recording in two parts, and different environmental situation in one micro climate.
Material and method: crowded places were studied to 18 days from the first day of shahrivar to 18th of shahrivar; two categories were created: the first Baghe fin open spaces and the second historical textures open spaces. After finishing library studies, physical presence in the texture and conducting field study (observation, and data collection of site) simultaneously the responses of 788 of inhabitants and tourists to the questionnaires (environmental and thermal situations), climate parameters (temperature, air flow speed, moisture, co, co2) were recorded. Then the dress rate and the metabolism of people was computed with delta log10 software, and after collecting and analyzing the data with spss24 software, thermal comfort of respondents based on UTCI was determined by Ray Man software.
Findings: The finding shows that the respondents in the whole surrounding of the study experienced thermal comfort between 20,23 and 35,61 centigrade degree. Also thermal comfort scope in Baghe fin between 19,45 to 37,63 and in historical texture between 18,5 to 35,16 centigrade.
Conclusion: The results of this study showed that the scope of thermal comfort in Baghe fin is higher the that of Kashan historical texture about 1,52 centigrade.
