Liquid superheat for vapour formation with and without presence of solid surface

✍ Scribed by M. Stefanović; N. Afgan

• Book ID: 104112854
• Publisher: Elsevier Science
• Year: 1972
• Tongue: English
• Weight: 596 KB
• Volume: 10
• Category: Article
• ISSN: 0011-9164
• DOI: 10.1016/s0011-9164(00)80244-1

✦ Synopsis

SYMBOLS A -surface. mz a -constant B -number of quasi molecuIes in microheterogeneous system C -specific heat, kcal/kp"C Ffree energy, kcal G -thermodynamic potential. kc31 g -number of nucleus t -latent heat, kcal/kp -mas.%kg "N-number of molecules in system P -pressure, kp/m' 9 -heat flux, kcal/m*h t -radius of bubble, m s -specific entropy, kcal/kg"K T -absolute temperature, "C At -superheat temperature, "C vvolume, m3 Wprobability ct -specific chemical potential 8angte of wetting, kcal/kg d -surface tension, kp/m P -density, g/cm' J -rate of nucleus formation, (cm3 set)-' INTRODUCllON Intensity of the phase change from the liquid to vapor phase for the flashing and boiling process strongly depends on the liquid superheat Relation between the liquid superheat and intensity of the process depends on the type of process and is different from the superheating in idealized conditions. Attempts to predict the superheating of the liquid by applying universal relations to ideal conditions,