Measurements of Convection Heat Transfer Coefficients for Hydrocarbon Mixtures during Boiling in a Heated Horizontal Pipe from 100 K to Room Temperature

There is a scarcity of data and theory currently available regarding the heat transfer coefficients associated with two-phase, multi-component mixtures at cryogenic temperatures. This paper presents results of research aimed at measuring theconvection heat transfer coefficients for hydrocarbon mixtures (methane, ethane, propane, and nitrogen (for dilution)) during evaporation while flowing within a heated horizontal pipe over a wide range of temperatures (from 100 K to room temperature). The results show the heat transfer coefficients along with their sensitivity to parameters such as heat flux, mass flux, pressure, and composition.