Optimization the Position of the Windows for Improved Natural Ventilation, Thermal Comfort and Daylight in Yazd City

Document Type : Original Article

Authors

1 MSc., Department of Architecture and Urban Planning, Imam Khomeini International University, Qazvin, Iran.

2 Associate Professor, Department of Architecture and Urban Planning, Imam Khomeini International University, Qazvin, Iran.

3 Associate Professor, Department of Mechanical Engineering, Faculty of Engineering, Imam Khomeini International University, Qazvin, Iran.

4 Faculty Member, Department of Architecture and Urban planning, Technical and Vocational University (TVU), Tehran, Iran.

Abstract

In recent decades, the use of natural energy sources such as light and solar energy in the field of construction and architecture has been very useful. The aim of this study was to investigate the effect of the location of openings on indoor air flow distribution for thermal comfort of users and natural ventilation, in addition to the distribution of daylight factor and pmv in space. Air circulation, wind speed, air temperature and daylight factor in 16 scenarios of placement of openings in a cube-shaped residential architecture was studied in the hot and dry climate of Yazd as a case study. In addition, in the present article, computer modeling method, library studies and field measurement were used. The analyses of air circulation, wind speed, air temperature and user satisfaction (PMV) were carried out using CFD method in Design Builder software and the amount of daylight factor (DF) distribution, uniformity rate (Uo) were analysed using Relux Software. The results indicated that the placement of one opening in the direction of the prevailing wind and the other two openings in its lateral directions provided the desired air flow and turbulence with appropriate speed and air circulation creating thermal comfort conditions for users in space. The amount of ventilation and air circulation in space, speed, temperature and distribution were balanced. In this scenario, the user satisfaction index (PMV) was 5% higher than other scenarios and the amount of daylight distribution and visual comfort (uniformity rate = 0.6) were in the appropriate range.

Keywords

Main Subjects


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Volume 18, Issue 4 - Serial Number 56
Agriculture / Art & Architecture
February 2022
Pages 395-410
  • Receive Date: 28 May 2021
  • Revise Date: 15 July 2021
  • Accept Date: 06 September 2021