How can we solve the problem of liquid shock or liquid return in the chiller?
So, how do we solve the problem of liquid strike or liquid return? The chiller manufacturer reminds you to consider the following aspects:
1. In the piping design, avoid liquid refrigerant entering the compressor when starting up, especially the refrigeration system with a relatively large charge. Adding a gas-liquid separator at the compressor suction port is an effective way to solve this problem, especially in heat pump units that use reverse cycle hot gas defrosting.
2. Before starting the machine, preheating the oil cavity of the chiller compressor for a long time can effectively prevent a large amount of refrigerant from accumulating in the lubricating oil. It also has a certain effect on preventing liquid shock.
3. Water system flow protection is indispensable, so that when the water flow is not enough, it can protect the compressor, and the famous teacher unit has liquid back phenomenon or freezes in severe cases.
