The National Natural Science Foundation of China(No.50776055,51076084);the Natural Science Foundation of Shandong Province(No.ZR2016YL005)
The experiments of the onset of nucleate boiling using R134a as working fluid were conducted in vertical helically-coiled tubes. The experiments were carried out with a range of pressure from 450 to 850 kPa, inlet sub...
The National Natural Science Foundation of China(No.50776055,51076084)
Based on the superposition principle of the nucleate boiling and convective heat transfer terms,a new correlation is developed for flow boiling heat transfer characteristics in helically coiled tubes.The effects of th...