Proceedings of the KSME Conference (대한기계학회:학술대회논문집)
- 2003.04a
- /
- Pages.1401-1406
- /
- 2003
Performance Evaluation of Vapor Pressure Correlations in a Polynomial Expression
다항식 형태의 증기압 상관식의 성능 평가
Abstract
Performance of two vapor pressure correlation equations in a polynomial expression is compared. These are the Wagner-type equation and the Inverted form equation. The equations are fitted to correlate the data in the ASHRAE tables and from NIST Chemistry WebBook for 17 pure substances. Some observations on the exponents in the two polynomial equations are made, which results in a proposal of a new closed form vapor pressure equation. The new equation yields the accuracy comparable to that of the Wagner-type equation and better than that of the Inverted form equation.
Keywords