well i am trying to convert BTU/SCF in KJ/KG....i myself gave it a try.Basically this thing is concerned to Natural Gas.

i found out the GCV of natural gas from the N.G bill which is 939 BTU/SCF?

939 btu/scf x 1.055 KJ/1 BTU x 1 scf/0.0283 scu. m (*s is being used for standard.)

ANSWER COMES OUT TO BE = 35,005 KJ/SCU. M

I ASSUMED NATURAL GAS = 100% METHANE

=> MOLECULAR WEIGHT OF METHANE = 16 G/MOL = 0.016 KG/MOL

AT STANDARD CONDITIONS i.e at 1 atm pressure and 15 degree centigrade temperaute; i calculated the volume using IDEAL GAS EQUATION

V= (R x T)/P and it came out to be 21.721 SCU. M/MOL.

CALCULATED THE DENSITY AFTERWARDS,

= 0.016/21.721 = 0.00073661 KG/SCU. M

NOW FOR 1 SCU. M ----> MASS WILL BE= DENSITY X VOLUME

COMES OUT TO BE = 0.00073661 KG

THUS GCV OF NATURAL GAS =

35,005 KJ/SCU. M x (1 SCU. M/0.00073661 KG) = 47522400.2 KJ/KG

Now you can see first my calculations are based on assumption, second i am not sure whether i am doing it right or not?

can anyone please help me out in finding the way of calculating GCV of natural gas at standard conditions in KJ/KG? plus it would be highly appreciated if somebody let me know what is NET CALORIFIC VALUE (NCV) of natural gas at standard conditions? **STANDARD CONDITIONS ARE 1 ATM. AND 15 DEGREE CENTRIGRADE.

Your earlier response will be highly apprciated.

Thanking you and Regards,