Abstract:
Cold storage energy release is affected by the air flow around it. In this study, an experimental platform based on Particle Image Velocimetry was developed to investigate the influence of factors such as air flow rate, windward surface shape, and placement spacing on the flow field of cold storage plate periphery. Consequently, the air velocity inhomogeneity in outer surface and the gap of cold storage plate increased with the increase in inlet air flow rate. In the test of single cold storage plate, the windward surface shape affected the air velocity of surface of cold storage plate, and the greater the inlet air flow, the more significant the effect. The cold storage plate with rectangular windward plane achieved optimal convection effect under air flow rate Q
0 and 3Q
0, and the cold storage plate with circular windward plane under air flow rate 5Q
0. In the test of double cold storage plate, the average air velocity of the gap rose first and then decreased with increase in inlet air flow, and rose with increase in the placement spacing. The best combination of parameters were obtained when the optimal convection effect was double cold storage plate with circular windward plane, air flow rate was 3Q
0 and placement spacing was 4 cm, which achieved average air velocity of surface of 1.82 m/s. The results will provide a reference for optimization of release efficiency of cold storage energy.