Session: K13-02 Pool Boiling Fundamentals

Paper Number: 105709

105709 - A Review of Two-Phase Flow Boiling Heat Transfer Coefficient and Correlations for Hydrocarbons. 

Studying the multiphase flow heat transfer coefficient has a crucial importance for many heat transfer equipment to achieve higher efficiency for more compact design and cost reduction. One reason behind choosing hydrocarbons as refrigerants in this study is because hydrocarbons have zero ozone depletion potential (ODP=0) and insignificant direct global warming potential (GWP = 3). Moreover, the thermodynamic and thermophysical characteristics of hydrocarbons qualify them to be a strong candidate for more heat transfer applications. This study will present a comprehensive review of the two-phase flow boiling heat transfer coefficient of hydrocarbons such as pure ethanol, propane (R-290), butane (R-600), and isobutane (R-600a) at various experimental conditions. Initially, by constructing a database for the working fluids from various experimental work available in literature. The current data that this study has collected for the flow boiling of hydrocarbons spans wide ranges of parameters, such as: mass flux, heat flux, operating pressure, and saturation temperature, etc. Furthermore, by comparing the experimental multiphase heat transfer coefficient database with the anticipated values of each correlation, the prediction performance of 20 correlations found in the literature was assessed. This study leads to the selection of the best prediction method based on the minimum deviation of predicted results from the experimental database provided by calculated mean absolute error (MAE). The findings of this study can also be useful in the development of more accurate correlation methods for these fluids and improve the prediction of their flow boiling characteristics.

Presenting Author: MOHAMED ELFAHAM University of North Dakota