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Analysis of the Thermal Status by Using the Standard Effective Temperature and Discomfort Index in Harbin

Chen Li1,2 Li Shuai3 Zhou Yongji4 Zhang Hongmei1(1.Harbin Meteorological Office,150080;2.School of Geography Remote and Sensing Science,Beijing Normal University;3.Heilongjiang Meteorological Bureau;4.Meteorological Information Center of Heilongjiang Province)  
Standard Effective Temperature(SET) is the best thermal comfort index induced from human heat balance model so far.SET is used to analyze the thermal comfort in non-heating period in Harbin.In actual environment,one person may feel too cold or too hot when he/she wears different clothes and takes different activity.For lots of people,the environment can't make all of them feel comfort because every individual has different feeling about the environment and has different standard of comfort.So,discomfort index(DISC) is adopted in this paper to analyze the degree of discomfort in Harbin.Based on data of hourly temperature,hourly relative humility and hourly wind speed in non-heating period(from 20 April to 20 October) in 2005 in Harbin,average three-hour temperature,relative humility and wind speed of every period of ten days from 20 April to 30 May and from 1 September to 20 October are calculated.Average three-hour temperature,relative humility and wind speed of every month from June to October are calculated too.And based on the thermal comfort figures in the book "Architecture.Climate.Energy",the method of interpolation is applied to obtain the SET and DISC values of every-three-hour of every period of ten days.Some conclusions are:If people in Harbin wear clothes for which clothing thermal resistance is 0.6,such as trousers,semi-sleeve shirt or long-sleeve shirt,from June to August and people wear clothes for which clothing thermal resistance is 0.9,such as trousers,long-sleeve shirt,and jacket in other periods,there are no period to make eighty percent of people feel thermal comfort when people work at a table in a room.From 10:00 to 18:00 in a day of the-last-ten-day of May to the-first-ten-day of September,seventy percent of people feel comfort.People can feel cold in 75 percent of a day during the period from the-last-ten-day of April to the-first-ten-day of May.People can feel very cold in half a day during the period from the-last-ten-day of September to the-first-ten-day of October.So,in non-heating period in Harbin,people may wear warmer clothes to offset the discomfort.
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