Preventing liquid locks

[dynamiXXX]

I just joined a chemical engineering project where we need to measure the electrical resistivity of a refrigerant, but it's in liquid for and under pressure. One of the lead chemists told us we should install valves to the top of our measurement cell to prevent liquid locks. I honestly don't have any experience with this and I'm not familiar with liquid locks. I'm hoping someone here can tell me how to do this setup, if there are other ways to prevent liquid locks, and just any other suggestion we can implement in our project. Insights greatly appreciated!

 

[MoleculeMaster]

If you want to avoid liquid lock in your pressurized refrigerant measurement cell, a practical solution is to install vent valves at the top. These little guys are lifesavers, they let trapped air or gas escape, which can help prevent pressure issues and potential damage. You might also want to consider the sizing and placement of these valves,getting that right can really make a difference in how well they vent. And don't forget about maintenance! Keeping everything in tip-top shape is key. By the way have you explored any specific types of valves yet?

 

[catalystflowcontrol761]

Vapor lock can be a pain, so vent valves up high are your friends.Just be sure your setup lets stuff separate properly and those valves react quick enough for the pressure you're dealing with

 

[ch3m3ist_]

I just joined a chemical engineering project where we need to measure the electrical resistivity of a refrigerant, but it's in liquid for and under pressure. One of the lead chemists told us we should install valves to the top of our measurement cell to prevent liquid locks. I honestly don't have any experience with this and I'm not familiar with liquid locks. I'm hoping someone here can tell me how to do this setup, if there are other ways to prevent liquid locks, and just any other suggestion we can implement in our project. Insights greatly appreciated!

A liquid lock is essentially when liquid gets trapped in a part of a system that's supposed to contain gas, preventing the gas from escaping, so the chemist's suggestion is a great way to prevent this! You'll want to install a small vent valve at the highest point of your cell. As you fill the cell with the refrigerant, open this valve. This allows any trapped gas to escape. Once you see liquid start to come out, you know the cell is full and you can close the valve. This technique is also known as burping the system. Another way to approach this is to use a three-way valve or a bypass line. This gives you more control, allowing you to vent the cell and then isolate it from the vent line once it's full. Besides preventing liquid locks, you'll also want to make sure the materials of your cell and electrodes are compatible with the refrigerant and won't corrode. Be sure your measurement cell is rated for the pressures you'll be working with and double-check all connections to prevent leaks. Good luck with the project!