ESTIMATION OF LIQUID AND SOLID HEAT CAPACITIES USING A MODIFIED KOPP'S RULE
- 1 February 1992
- journal article
- research article
- Published by Taylor & Francis in Chemical Engineering Communications
- Vol. 112 (1) , 21-30
- https://doi.org/10.1080/00986449208935989
Abstract
Element based correlations are developed for the estimation of solid and liquid heat capacities (Cp) at 298 K. The correlations follow the general format, C p = ∑ C E N E, where C E is a coefficient associated with each element in the compound and N E is the number of occurrences of the element in the compound. The developed correlations provide a suitable alternative when neither experimental data nor the parameters for more rigorous estimation methods exist. The average absolute errors for the correlations are 9·% for solids and 8·% for liquids. These results represent a substantial improvement to Kopp's Rule, the original element based correlation.Keywords
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- Heat capacities of liquids. Estimation of heat capacity at constant pressure and 25.deg., using additivity rulesJournal of Chemical & Engineering Data, 1969