Chemical Engineering - Stoichiometry - Discussion

39. 

Pick out the wrong unit conversion of calorific value.

[A]. 1 kcal/kg = 1.8 BTU/lb = 4.186 kJ/kg.
[B]. 1 BTU/ft3 = 8.9 kcal/m3 = 0.038 MJ/m3.
[C]. 1 BTU/lb = 2.3 kcal/kg.
[D]. 1 kcal/m3 = 0.1124 BTU/ft3.

Answer: Option C

Explanation:

No answer description available for this question.

K.Rama Krishna said: (Feb 17, 2018)  
1 BTU= 0.25216 kcal,
1 lb= 0.453592 kg,
1 BTU/lb = 0.25216/0.453592= 0.555 kcal/kg,
1 kcal= 3.96567 BTU= 4.184 kj,
1 kg= 2.2062 lb,
1 kcal/kg= 3.96567/2.2062= 1.8 BTU/lb,
1 kcal/kg= 4.184/1= 4.184 kcal/kg,
1 ft= 0.3048 m,
1 ft^3= 0.0283 m^3,
1 BTU/ft^3= 0.25216/0.0283= 8.9 kcal/m^3= 8.9*4.184/1000= 0.038 MJ/m^3.

So option 'C' is the wrong unit conversion of calorific value.

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