# What's the meaning of the unit "Clo"

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 December 11, 2004, 09:07 What's the meaning of the unit "Clo" #1 Tony Guest   Posts: n/a I have got the following information: Clo - Clothing and Thermal Insulation Clo is used to measure the thermal insulation of cloths Cloth's insulation are normally measured with the unit "Clo", where 1 Clo = 0.155 mēK/W If there is a manikin whose heat flux is 10w/m2, and the insulation value of the clothes is 0.5 Clo ,then when we compute the heat transferred to the environment from the manikin , how should we do? What's the function of this parameter in the computation? thx

 December 13, 2004, 02:55 Re: What's the meaning of the unit "Clo" #2 Robin Bornoff Guest   Posts: n/a Clo is an inverted heat transfer coefficient. Qdot (W/m^2) = 1/Clo (T_manikin - T_ambient) The temperature rise between the manikin and the environment for your example would be 1.55 degC. Robin.

 December 13, 2004, 03:11 Re: What's the meaning of the unit "Clo" #3 Tony Guest   Posts: n/a Thank you for your reply, Mr.Robin

 December 13, 2004, 03:59 Re: What's the meaning of the unit "Clo" #4 Tony Guest   Posts: n/a Mr.Robin: according to the equation you gave, and in my example I set the insulation value to be 0.5 Clo, the temperature between the manikin and the environment should be 10*0.155*0.5=0.775 degC, not 1.55degC, right?

 December 13, 2004, 08:08 Re: What's the meaning of the unit "Clo" #5 Tony Guest   Posts: n/a Mr.Robin: according to the equation you gave, and in my example I set the insulation value to be 0.5 Clo, the temperature between the manikin and the environment should be 10*0.155*0.5=0.775 degC, not 1.55degC, right?

 December 13, 2004, 10:16 Re: What's the meaning of the unit "Clo" #6 Robin Bornoff Guest   Posts: n/a Oops, yes u r right!

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