Yuan Ma

TL;DR: In this article, a semi-hermetic reciprocating compressor was developed for application in CO2 refrigeration, and a test system was incorporated into the compressor performance test rig, with a focus on investigating the dynamics of the discharge valves.

TL;DR: In this paper, the phase change effect during the filling process is taken into account by embedding a pair of mass and heat transfer models into the CFD software FLUENT, one of which involves liquid flash driven by pressure difference between the fluid saturated pressure and the tank pressure, and the other one indicates and calculates the evaporation-condensation process driven by temperature difference between fluid and its saturated state.

TL;DR: In this paper, a complete set of correlations for hydrogen boiling heat transfer are summarized and subsequently a predicted hydrogen boiling curve is constructed, and the results show that heat flux in the nucleate boiling regime is approximately a function of ΔT2.

TL;DR: In this paper, an existing gravity scaling analysis, proposed based on the experimental data of non-cryogenic fluids, is assessed using the boiling heat transfer data of hydrogen under different gravities.

TL;DR: In this article, an experimental study is performed on the mixing of superheated gas and subcooled flowing liquid and the subsequent flow condensation process in a vertical visual flow channel using R123 as the working fluid.