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nivasram
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Join Date: Jul 2007
Posts: 8

thermal-mechanical

07/31/2007 12:36 AM

can anybody tell me the conversion factor to convert W/m2 k in to Btu/hr. feet Square Degree F.
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Anonymous Poster
#1

Re: thermal-mechanical

07/31/2007 4:17 AM

http://www.simetric.co.uk/ will get you underway.
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philiplyon
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Join Date: May 2007
Posts: 45
#2

Re: thermal-mechanical

08/01/2007 1:13 AM

1Kw = 3400Btu/hr
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crm
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Engineering Fields - Piping Design Engineering - New Member Technical Fields - Architecture - New Member

Join Date: Apr 2006
Location: Bangalore India
Posts: 288
Good Answers: 3
#3

Re: thermal-mechanical

08/01/2007 1:58 AM

Go to web site http://www.pwr-tools.com/ and download a small conversion tool you have tons of conversions in that down load.

crm

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dumb46
Active Contributor

Join Date: Apr 2006
Posts: 13
#4

Re: thermal-mechanical

08/01/2007 2:06 AM

The following coversions for conductivity, k:

1 BTU in/hr ft2 oF = 0.1444 W/m oK

or

1 W/m oK = 6.93 BTU in/hr ft2 oF

for conductance, c;

1 BTU/hr ft2 oF = 5.68 W/m2 oK

or

1 W/m2 oK = 0.176 BTU in/hr ft2 oF
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dumb46
Active Contributor

Join Date: Apr 2006
Posts: 13
#7
In reply to #4

Re: thermal-mechanical

08/01/2007 4:21 PM

corrections in formulas:

The following coversions for conductivity, k:

1 BTU/hr ft2 oF = 0.1444 W/m oK

or

1 W/m oK = 6.93 BTU in/hr ft2 oF

for conductance, c;

1 BTU/hr ft2 oF = 5.68 W/m2 oK

or

1 W/m2 oK = 0.176 BTU/hr ft2 oF
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Codemaster
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Join Date: Jul 2005
Location: Stoke-on-Trent, UK
Posts: 4496
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#8
In reply to #7

Re: thermal-mechanical

08/13/2007 7:03 AM

You've changed first bit for conductivity that was already OK.

1 BTU in/hr ft2 oF = 0.1444 W/m oK

Codey

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Anonymous Poster
#5

Re: thermal-mechanical

08/01/2007 4:57 AM

conversion factor to convert W/m2 k in to Btu/hr. feet Square Degree F.

multiply by 0.57779
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Anonymous Poster
#6
In reply to #5

Re: thermal-mechanical

08/01/2007 11:39 AM

W/(m2K)=J/(sm2K)

1J/(sm2k)*1BTU/1055.06J*3600s/1hr*1m2/10.76ft2*255.9K/1F

= 81.15 BTU/(hrft2F)
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