Effect of heat flux on pressure drop in low pressure flow boiling in a horizontal tube

AbstractThere has been a lack of research specifically examining the effect of heat addition on frictional pressure drop in two phase flow systems. The work presented herein is a result of a series of experiments, using a low pressure steam‐water loop to investigate this effect. It was found that the application of constant heat flux results in a significant increase in frictional pressure drop at certain qualities. It was also found that increasing mass flux or decreasing system pressure shifts the maximum pressure drop towards lower qualities. The observed phenomenon is believed to be the result of liquidvapour interactions at the slug‐annular flow regime transition. This has been confirmed by flow pattern analysis using Mandhane's flow map.

Effect of heat flux on pressure drop in low pressure flow boiling in a horizontal tube Journal Articles