To clarify the influences of working conditions and longitude tube pitch on heat transfer characteristics in shell side of LNG spiral wound heat exchangers

the analysis on the propane flow boiling in the shell side is performed. The experimental conditions cover the vapor quality of 0.2-1.0

the heat flux of 4-10 kW·m-2

and the mass flux of 40-80 kg·(m2·s)-1. The results indicate that

with the increase of vapor quality

the heat transfer coefficient (HTC) increases initially

and then falls off sharply at the vapor quality of 0.8-0.9. With the increase of heat flux

the HTC increases at the vapor quality smaller than 0.8

while decreases at the vapor quality larger than 0.8. With the increase of mass flux

the HTC increases at the low heat flux condition

while presents to be non-monotonous at the high heat flux.