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Present paper deals with experiments of direct-contact freezing of Hexadecane particles injected from multi-nozzle into stagnant pure water, ethylene glycol 30 wt% water solution and ethylene glycol 50 wt% water solution. The experimental parameters were varied in the ranges of n=0.001-0.51, Re=34-257 and Pr=8.8-42. Main results obtained are summarized in the followings; (1) an empirical equation for drag coefficient of solidified Hexadecane particles was proposed, (2) the relationship between particle density and variations of rising velocity was investigated, (3) the relationship between particle density and Nusselt number of particle swarm was clarified, (4) It was found that one dimensional heat conduction model can be applied to predict the solidification mass fraction of single particle and particle swarm including uniform size particles, and (5) It can be applied to predict the solidification mass fraction of particle swarm including various size particles formed by destruction of laminar and turbulent jet as well.

Solidification Mass Fraction of the Group of Oil Particles Ascending in Refrigerant