3 replies to this topic

[oguzcantasdemir]

Hi,
 

i want to calculate heat capacity of butanol with
Cp= a*T - b*T^2 + c*T^3+ d*T^4 this formula.

But i cant find a,b,c,d values for butanol (gas phase)

i dont want direct cp values of butanol.i need a,b,c,d values.
cause i use this formula with derive equation between different temperatures.
 

i need help about this situation.

[Napo]

Oguzcantasdemir,

 

I found the following expresion in the Property Data Bank of "The Properties of Gases and Liquids", by Reid, Prausnitz and Sherwood (3rd. ed):

 

Cp = A + BT + CT^2+DT^3

 

Cp = [cal/g-mol], and T = [K ]

 

where:

 

A = 0.780

B = 9.984 x 10^-2

C = -5.354 x 10^-5

D = 1.119 x 10^-8

 

for n-butanol.

 

I hope help you.

 

Napo.

Edited by Napo, 20 November 2015 - 02:11 PM.

[breizh]

http://www.cheric.or...id=821&prop=CPG

 

Have a look at this data base .

 

Good luck

 

Breizh

[oguzcantasdemir]

@breizh thank you sir !