Transport Processes and Separation Process Principles (Includes Unit Operations) Fourth Edition

Appendix A.2. Physical Properties of Water

A.2-1. Latent Heat of Water at 273.15 K (0°C)

Latent heat of fusion	=	1436.3 cal/g mol
	=	79.724 cal/g
	=	2585.3 btu/lb mol
	=	6013.4 kJ/kg mol
Source: O. A. Hougen, K. M. Watson, and R. A. Ragatz, Chemical Process Principles, Part I, 2nd ed. New York: John Wiley & Sons, Inc., 1954.

Latent heat of vaporization at 298.15 K (25°C)

Pressure (mm Hg)	Latent Heat
23.75	44 020 kJ/kg mol, 10.514 kcal/g mol, 18 925 btu/lb mol
760	44 045 kJ/kg mol, 10.520 kcal/g mol, 18 936 btu/lb mol
Source: National Bureau of Standards, Circular 500.

A.2-2. Vapor Pressure of Water

Temperature		Vapor Pressure		Temperature		Vapor Pressure
K	°C	Kpa	mm Hg	K	°C	kPa	mm Hg
273.15	0	0.611	4.58	323.15	50	12.333	92.51
283.15	10	1.228	9.21	333.15	60	19.92	149.4
293.15	20	2.338	17.54 ...