Analysis of Solidification Heat Transfer Process on Double-Convection Condition

The technology of freeze latent heat source heat-pump is very important for utilization of energy contained in surface water. On the condition of double convection beside phase interface, using method of similarity theory and dimensional analysis, some important conclusions of plane ice layer were gained, such as time-variation rules of thickness and growth speed, necessary and sufficient condition of growth, limiting thickness, characteristics of temperature filed and son. Conceptions of total freeze heat-transfer coefficient and attenuation critical time were introduced. The theoretical formulas were given to calculate the quantity of heat transfer. Conclusions indicated that freeze heat transfer is an unsteady process, and heat transfer is enhanced by latent heat release in initial stage, but it would be worsened by thermal resistance of ice after the attenuation critical time. The freeze process would approach a steady stage.