Experimental study of saturated flow boiling heat transfer characteristic of ethane in a horizontal tube

In the present experimental study,saturated flow boiling heat transfer coefficients of R170 inside an 8.0 mm ID horizontal tube have been measured.The experimental results were obtained over the saturation pressures ranging from 0.35 to 0.57 MPa,mass fluxes ranging from 63.6 to 102.5 kg·m~(-2)·s~(-1) and heat fluxes ranging from 13.1 to 65.5 kW·m~(-2).The influences of quality,saturation pressure,heat flux and mass flux on the heat transfer characteristic were examined and discussed. The experimental flow boiling heat transfer coefficients were compared with the calculated results of nine correlations.Two correlations of asymptotic model and two correlations of enhanced model can give good predictions.The average deviations are found to be within±15%.