Back to tools

Description: Heat transfer coefficient for internal flow inside tubes for turbulent flow, developed bounfary layer and smooth tube.

Reference: Gnielinski, V. New equations for heat and mass transfer in turbulent pipe and channel flow. Int Chem Eng 16:359-367. (1976)

Equations/Symbols:

Calculate:
Insert surface temperature (Ts), fluid temperature (Tf), fluid pressure (P), diameter (D) and fluid velocity (v) and press 'Calculate'.

Fluid: Water Air R134a Ts (K): Tf (K): Pressure (Pa): D (m): v (m/s):

Fluid properties: ρ=995.35 kg/m3 cp=4,178.85 J/(kg.K) μ=0.000776027 Pa.s k=0.6191 W/(m.K)	Dimensionless numbers Re=1,282,627.14 Pr=5.24	Heat transfer coefficient h=3,094.16 W/m2.K

Heat Transfer Research Group - HTRG
University of Sao Paulo - USP