一、对流热传优于传导热传

动态蓄冰槽是基于对流热传优于传导热传原理，将盘管间以隔板隔成数空间室，再配以一小型循环水泵将水导流而上下循环于各隔板间室，或利用泵将蓄冰槽内水从底部抽出，从顶部撒水，如此可以利用最小的动力泵（每槽约1～2ＨP ）构成一动态冰水循环水流，储冰时管内卤水与管外冰水间形成对流传热，从而提高结冰均匀度。在溶冰过程由于循环水流搅动使卤水与冰水间的静止水曾流动起来，可有效提高换热效率，对于溶冰效果具相当助益，降低残冰量，少量剩余残冰也会浮到水面而不会卡在盘管之间，防止盘管过度冻结而，使储冰槽储冷容量完全发挥。以上为动态储冰槽基本原理，亦为其优异之特点。

一般蓄冰槽在盘管内侧循环卤水，盘管外储水结冰于管壁，由于静止蓄冰与卤水热交换为传导热传模式，因此储冰效率不佳。在溶冰初期，卤水管与结冰间管壁冰迅速溶冰成水后逐渐形成卤水与冰间的静止水层，成为热阻抗而使溶冰效率减缓，甚至在溶冰末期虽有剩余冰量，却无法使用的现象。

二、双向溶冰速率加倍

动态蓄冰槽的另一个特点是在溶冰行程可以利用冰水回水动力替代冰水循环泵，使冰水可由外而内直接溶冰供应空调，再配合卤水自内而外将结冰管溶冰，形成双向溶冰故效率加倍。

1 . Convective heat exchange is better than conduction

The dynamic ice storage tank is based on the theory that the convective heat exchange is better thsn conduction . The tank has been divided to several chambers by partition and the small circular pump guide Water flow through every chamber up and down circularly , thus the dynamic circulating chilled water flow may arise from minimum power pump ( aboutl～2 HP per tank ) , and then the flow generating the convective heat exchange between inner brine and outer chilled water to raise the freezing effect in charging process . The circulating water flow will agitate steady water layer between brine and chilled water to break resistance in the discharge process of tank . This result will improve discharge effect and exert storage energy in the tank completely . For the description given above , it’s not only the basic theory but also advantage of dynamic ice storage tank .

In general , brine is circulating in the tube and storage water will be frozen on the outer . Because of the heat exchange between still ice and brine is conduction , so that effect of ice charge is poor . In the beginning of discharge , the ice where near the walt of tube is melting rapidly and then generate still water layer as thermal resistance to reduce discharge effect between brine and ice . TO make matters worse , the remanent ice can ' t be melting in the final of discharge process.

2 . Two - way melting ice caused double effect .

The returning chilled water caused power to substitute for the circulating pump is the other character of dynamic ice storage tank . The chilled wster melts ice in the outside and brine in the inside concurrently , two - way melting ice will csuse double effect .