Kemal Altinisik
Mechanical Engineering Department, Nigde University, Nigde, Turkey
Mahmut D. Mat
Mechanical Engineering Department, Nigde University, Nigde, Turkey
Kemal Aldas
Mechanical Engineering Department, Nigde University, Nigde, Turkey
Yuksel Kaplan
Mechanical Engineering Department, Nigde University, Nigde, Turkey
Feridun Karakoc
Mechanical Engineering Department, Nigde University, Nigde, Turkey
A correlation is developed using Lockhard-Martinelli parameters for predicting the heat transfer coefficient during the two phase flow of water-vapor system. An upward flow in a vertical circular pipe at atmospheric conditions is considered. The constants in the correlation have been obtained after 2800 measurements. The accuracy of correlation is found to be 96.5 using t test. ΔT-htp and htp variations are also investigated using measured data.