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JMEAST Full Issue (12 4 2 , 2014.pdf

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Journal of Middle East Applied Science and Technology (JMEAST)
ISSN (Online): 2305-0225
Issue 12(4) [Part II], August 2014, pp. 643-653

Studying the Effect of Architectural design in
modification of thermal comfort by using ecological
indicators of climate Digital
Field Study of Arab Zadeh's house in Yazd, Iran
First A. Sahar Khodabakhshi, Teacher, Department of Architecture, khomein Branch, Islamic
Azad University, Khomein, Iran. Email:Sahar.Khodabakhshi@hotmail.com
Second B. Amir Samiei, Faculty member, Department of Architecture, khomein Branch,
Islamic Azad University, Khomein, Iran. Email:Samiei@iaukhomein.ac.ir
Abstract—a lot of environmental and allocated factors explain
the thermal comfort and following that the environmental comfort.
Also designers mostly focus on factors which they can control to
improve the quality of comfort in designing process. Temperature,
humidity, solar radiation and wind speed, are environmental factors
that have a direct effect on comfort ranges. Temperature and
humidity don’t have enough impact on the design factors But the
wind and the sun and the ground under the radiant temperature can
The main purpose of this study which is "studying The Effect of
Architectural design in modification of thermal comfort by using
ecological indicators of climate Digital" is to show the impact of
design guidelines in controlling and adjustment of comfort
territories. According to this study, field study and hypothesis
testing is a good way to gather basic data and methodology of this
study is descriptive - analytical. These studies have taken place in
Yazd, A city which is residential only because of intelligent design
and great use of natural resources and modifying and compiling the
difficult weather conditions. Due to the diversity of urban areas in
Yazd we had to limit our studies to traditional places and homes
and we chose Arazb Zadeh'd house which is located in old quarter
of the city. Analyzing the results with simulation and measured
data by valid climatically indicators is Based on the balance of the
human body and the physiological equivalent temperature
predicted in the survey and standard effective temperature.
Comparing these results with data from Yazd synoptic stations
shows that the spatial structure has a great deal of impact on the
micro-climate. the results from this study implies that the designing
process has been very effective on modifying the climate
conditions for people to live in the hottest days of summer and
coolest days of winter.

Keywords— "Climatic Design" ,"TemperaturePhysiology indicator" , "micro-climate", "energy balance
model of the human body", "environmental comfort"
Comfort zones and climatic design have attracted the
attention of urban planners and architects long ago due to
natural forces and their use in improving the living spaces
designed under the headings climate and thermal comfort. In
the field of thermal comfort, environmental variables
combined together as the human physiological environment.
Many studies have been done in the area of thermal comfort
and urban forms which examines how spatial structure has


an impact on the urban aerodynamics and urban areas have
developed a complex structure at a micro scale.
These models include variables such as radiative and
thermal properties of surfaces and the amount of radiation
received by adjacent surfaces and shadows created by
objects [1]. This study expressed and examined the
environmental factors that are affecting thermal comfort
factors and also talks about the factors influenced and
controlled by designing process. The case study reviewing
the structure of the physical design tried to show that
manipulation of the designer in wind control and the amount
of radiation received are two very important variables
specially cause the mitigation of climate which has been
done on the houses in the area of Yazd. Our case study is
Arab Zadeh's house which counts as a historic place and is
located in the old tissue of Fahadan. The data was collected
on the coldest day of year which was 1th of DEY in year
1991 (21th ,December,2012) and at the time period of 9am
to 15pm. These results and the data from Yazd synoptic
Valid indicators of climate analysis is based on the energy
balance of the human body in the form of predicted surveys
(mean vote)1 , physiological equivalent temperature2 and
standard effective temperature3 were adopted. In order to a
fast and accurate simulation and calculation we used the
software Ray Man4, in this research and for final data to be
in clear direction
we used Excel Software.
from a very long ago the studies of thermal comfort were
done in two general ways, which were Laboratory studies
and field studies. The most pioneering research done in this
field was in England in 1833 and was about the Interactions
between climate and architecture [2]. In 1972 Otto
Königsberger and his and colleagues provide a criteria for
designing and construction of housing in a book entitled
"Manual of tropical housing and building". A basic
knowledge of local climate and practices that distinguishes
that from regional climate and human thermal comfort and
designing terms are the topics of this book [3].
Razjooyan analyzed the criteria of comfort, the radiation of
the sun and the wind and its control methods for modulating
the comfort zones in two volumes entitled "Comfort in