1. Heat and Flow Technology I.
ÓBUDA UNIVERSITY
Heat and Flow Technology I.
Use only inside
Dr. Ferenc Szlivka
Professor
Dr. Szlivka: Heat and Flow Technology I_1

2. Properties of Fluids and Gases 1. Chapter
Dr. Szlivka: Fluid Mechanics 1. chapter

3. Phases diagram tcrit OC pcrit bar vcrit m3/kg r kg/m3 Water 374 225
322
oxygen
-119 51
429
nitrogen
-147
34.6
312
air
-141 38
335
Carbon dioxide
31.1 73
464

4. Three fases system p-v-T

5. Saturation-vapor pressure

6. Cavitation erosion on a ship screw
Fig. 1.3

7. Ideal gas state equation
isotropic (exponent) power
cp Isobaric heat capacity
cv Isochoric heat capacity

8. Air

9. Ideal gas simple state exchanging p-v and T-s on diagram

10. Isotherm state exchange

11. Isochor (isovolume) state exchange

12. Isobar state exchange

13. Adiabatic state exchange

14. Politropic state exchange

15. Compressibility of liquids
1.2 tab.
Liquid
Young (elastic) modulus"E"
Mpa
Etil alcohol
896
Petrol
1 062
Diesel oil
1 303
Water
2 179
Glycerin
4 509
Mercury
24 750
Steel
Áaésé