Transport Processes and Separation Process Principles, 5th Edition

Appendix A.2. Physical Properties of Water

Table 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 (mmHg)	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.

Table A.2-2. Vapor Pressure of Water

Temperature		Vapor Pressure		Temperature		Vapor Pressure
K	°C	kPa	mmHg	K	°C	kPa	mmHg
273.15	0	0.611