(Wolfram Alpha, 2017) C A ¿ Pr= CITATION 3 (Sinnott ,2005) lk 663 kf C A - oktaani soojusmahtuvus (J/kg*K) - oktaani viskoossus (Pa*s) k f - oktaani soojusjuhtivus (W/m*K) J 2415 2,9710-4 Pas kgK Pr= =6,58 W 0,109 mK Nusselt´i kriteeriumi: 0,14 Nu=C0,8Pr 0,3 ( ) w kus Pr on astmel 0,3, kuna tegemist on jahutamisega (Mikkel, 2013) C = 0,023, sest oktaan on väheviskoosne vedelik. (Mikkel, 2013) Oktaani viskoossus seinal w (64 ) 3,38 10-4 Pa s (Wolfram Alpha, 2017) 0,14 2,9710-4
ho Convective heat transfer coefficient outside coil W·m-2·K-1 k Slope of linear function k Thermal conductivity W·m-1·K-1 m ´ Mass flow kg·s-1 ma Mass of water inside the bath kg m ´b Mass flow rate inside the coil kg·s-1 Nu Nusselt number q Heat J Q Heat transfer rate J·s-1 U Heat transfer coefficient W·m-2·K-1 T Temperature difference K Tlm Log mean temperature difference K x Thickness of coil wall m
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