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Tahbaz M. Microclimate Observation by Outdoor Thermal Indices - Case Study of Five Climates . IJAUP. 2017;
URL: http://ijaup.iust.ac.ir/article-1-353-en.html

Associate professor University Professor
Abstract:   (465 Views)

Using outdoor public spaces as a place for social interaction is in a great consideration nowadays. Providing tolerable thermal condition - as long as possible - is one of the primary stages for people's presence in public outdoor places. Outdoor thermal indices are introduced to help architects in design procedure. This article is the result of some field studies have done in 2010 - 2012 in five different climates: hot semi humid (Ahvaz, Iran), tropical (Kuala Lumpur, Malaysia), hot-arid (Kashan, Iran), and moderate-arid (Tehran, Iran), cold (Sheffield, UK) in their worst thermal period. The weather data including temperature, humidity and wind speed, are collected by two portable Kestrel weather stations to show weather condition in local and microclimate levels. At the same time the people's behavior in outdoor spaces is observed according to different activities, the length of their exposure time and the personal parameters such as clothing, eating, body condition (age and health). To evaluate these observations, different outdoor thermal indices were used. The results show that outdoor thermal indices such as UTCI (universal thermal climate index), WBGT (wet bulb globe temperature), WCET (wind chill equivalent temperature), THI (temperature humidity index) and TSI (tropical summer index) may have not the same explanation for the same thermal conditions. Some of them are more appropriate for some specific condition  while others are not. At last it would be summarized that they have acceptable sensitivity to temperature but most of them need to become more sensitive to humidity and air velocity. 

Full-Text [PDF 4618 kb]   (164 Downloads)    
Type of Study: Research Paper | Subject: Urban Design
Received: 2016/09/15 | Accepted: 2017/07/19 | Published: 2017/10/10

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