Abdulla
18 posts
TimePosted 17/12/2013 11:10:42
Abdulla says

converting heat value

hello

How can we convert the ''heat value''  of natural gas from BTU/scf to kcal/Nm3 at atmospheric pressure and 60 F (15.6 C) temperature. I face problem in converting scf to Nm3 at a given temp and press. 

regards

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Ted Krapkat
536 posts
TimePosted 18/12/2013 02:52:53

re converting heat value

Hello Abdulla,

According to this website;- http://www.qbmconsultants.com/conversion.html 

1MJ/Nm3  =  25.368 BTU/scf  =  238.8 kcal/Nm3 

Therefore, 1 BTU/scf  = 9.41 kcal/Nm3  

(Standard cubic feet is measured at 60oF, 1 atm. while Normal cubic meter is at 0oC, 1atm.)

 

 

Regards,

Ted.

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Abdulla
18 posts
TimePosted 20/12/2013 06:25:16
Abdulla says

re converting heat value

Thank you mr. Ted for your replay

Regards

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Nael
72 posts
TimePosted 29/12/2013 05:35:07
Nael says

re converting heat value

Dear Ted;

According to above website:

1 MJ/Nm3 = 25.368 BTU/scf = 238.8 x 102 kcal/Nm3

1MJ/NM3 = 25.368 BTU/scf = 243.576  kcal/Nm3 

Then;

BTU/scf = 9.60 kcal/Nm3  Not 9.41 kcal/ Nm3 . Am I right or I have missed something?

Best Regards

Nael

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