Experimental Data on Critical Heat Flux of Short Helical Minichanel Evaporators

Published: 18 March 2024| Version 1 | DOI: 10.17632/96ms52pp48.1


Detailed experimental raw data is provided, reflecting measurements taken from a purpose-built experimental setup designed specifically for the measurement of Critical Heat Flux in a Short Helical Minichannel Evaporator. Short helical minichannel evaporators are devices designed to provide refrigeration in applications with very high heat flux demands. They are suitable for use in electronic devices, machining processes, and other similar applications. In a vapor compression refrigeration cycle, a capillary tube serves as the expansion device. Refrigerant is sprayed onto both the front and side surfaces of a blind hole, where the high heat flux refrigeration demand exists. Featuring a unique design resembling a helical screw and an evaporator channel, the short helical minichannel evaporator combines compact size with efficient heat dissipation. The heat dissipation capacity of this device is limited by the critical heat flux, which represents the point at which the departure of nucleate boiling regime happens because of the formation of an insulating vapor film. A total of 32 experiments were conducted in an experimental device built and installed in a laboratory at the Karlsruhe University of Applied Sciences, in Germany. The raw data from these experiments is available in this dataset in CSV format, with a header row indicating variables and units of measured data. The aim of these experiments is to find the conditions when the critical heat flux is reached, setting a limit to the heat capacity of this high heat flux refrigeration device.



Heat Transfer, Refrigeration, Flow Boiling