tchvacman
Mechanical
- Nov 1, 2006
- 4
I visited a site in Oregon and have a couple of questions. The design uses sch. 80 PVC in the upper floors of the building and black pipe in the basement.
The units in the building are water source heat pumps.
The engineer called for 50% glycol in the system. I am not sure if a rust inhibitor was installed.
There are several PVC fittings that are coming apart at the glue joints. They also have a real bad rust problem in the system. The great part is that no strainers were installed so there were multiple failures of units.
My questions:
1. What are the effects of ethylene glycol to metal pipe?
2. What are the effects of ethylene glycol to pvc pipe?
3. I have always seen just 25% glycol used. Is 50% normal?
4. Have you ever seen a glycol system used with a cooling tower?
Thanks for any help.
The units in the building are water source heat pumps.
The engineer called for 50% glycol in the system. I am not sure if a rust inhibitor was installed.
There are several PVC fittings that are coming apart at the glue joints. They also have a real bad rust problem in the system. The great part is that no strainers were installed so there were multiple failures of units.
My questions:
1. What are the effects of ethylene glycol to metal pipe?
2. What are the effects of ethylene glycol to pvc pipe?
3. I have always seen just 25% glycol used. Is 50% normal?
4. Have you ever seen a glycol system used with a cooling tower?
Thanks for any help.