Cooling the profile by immersing and pulling it through a water tank is faster but creates a zone of heated water around the profile, which inhibits heat transfer.
把型材浸没于水中通过一个水箱拉动的冷却方法，会在型材周围建立一个热水区，这个热水区会阻碍热交换。
2
The low speed bottom sweep provides proper heat transfer to tank walls.
低速底部可以将适当的热量转移到罐壁。
3
The water heater collects the heat collected by the collector to the water storage tank through the 3 heat transfer system.