Borneol Dynamic Ice Heat Transfer Characteristics

This thesis is concerned with the component parts and the principle of operation of the harvest-type ice storage system, and research on making-ice process. firstly, simulates the process of flow and heat transfer about chilled water along vertical evaporation panel on the effect of gravitation force. Analytic and numerical solutions are carried out. By using boundary layer theory, analytic expressions for temperature profile and the convective heat transfer coefficient are obtained when chilled water flows along the vertical panel on the effect of gravitation force. The temperature and velocity profiles in the water film are gotten by virtue of numerical simulation. In gravitation filed ,it is not obvious that heat transfer coefficient changes with location. Compared with horizontal panel, the gravity has effect on heat transfer coefficient between water film and the vertical panel.Secondly, solves one dimensional heat conduction with phase change on whose interface there is the convection heat transfer. The temperature distribution in ice-rich layer was carried out by simulation. Makes comparison and analysis of the effects of different conditions on the temperature in ice-rich layer. Heat transfer on phase change interface makes the velocity of phase change decrease.Finally, investigates the harvest-type ice storage system in the First People's Hospital in Zhenjiang City .Makes economic comparison in investment and operation cost with conventional air conditioning system. The static payback period is also presented. In the condition of reasonable ratio of peak to off peak of electricity price, the economic advantage of the harvest-type ice storage system is obvious. Compared with static ice-making cool storage system, its initial investment increases, but running cost decreases, and the developing potentiality of this system is tremendous.