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27-09-2021, 09:21 AM #1
Discharge Pressure High in Ammonia System
Hi All, I'm new here
And my first post is about troubleshooting in ammonia refrigeration
So here's the thing
The system i'm working on is ammonia refrigeration system from 98
The issue right now is high discharge pressure, sometimes it could reach 17.5 barg in compressor in sensor, which is very high. One thing that i found out are piping from condensor to thermosyphon are cool, from thermosyphon there is 2 way, to high receiver and oil cooler, but somehow the piping to HR are kind of hot
The System using Mycom Compressor
N2520 : 2 unit
N2016 : 1 Unit
N1612 : 3 Unit
N160L : 2 unit
With Condensor Evapco PMC 631 : 2 Unit and PMC 536 : 1 unit
Where do i start to reduce the pressure issue, because any modification will required budget approval and takes time. I've got information about balancing line from High Receiver to Inlet line should be open, is it wrong? Because the Location are in Indonesia and we have no winter here
I will try to provide any information required
Thank you very much
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27-09-2021, 10:51 AM #2
Re: Discharge Pressure High in Ammonia System
Hi Ripjaws,
Yes balance line should be open.
Does system have automatic air purger, is it working & purging from each condenser drain?
Do all condenser water sprays & fans work?
Are your ammonia level Goodwin ALl Vessels& high pressure liquid receivers
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28-09-2021, 01:01 AM #3
Re: Discharge Pressure High in Ammonia System
[QUOTE=RANGER1;331506]Hi Ripjaws,
Yes balance line should be open.
Does system have automatic air purger, is it working & purging from each condenser drain?
Do all condenser water sprays & fans work?
Are your ammonia level Goodwin ALl Vessels& high pressure liquid receivers[/QUOTE
Hi Ranger1
My balance line are open but is that any rule for balance line? Because 2 of 3 balance line connected to Inlet Evapco, and the other one to outlet evapco
The system doesn't have automatic purger, only manual purger and purger point are from high Receiver and Balancing line from evapco (singel purger). I try touch the purger and it was very cool, I will update with purger photo and SLD purger soon
All Condensor water and sprays work normal
Ammonia pressure normalh
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28-09-2021, 03:39 AM #4
Re: Discharge Pressure High in Ammonia System
Ripjaws,
Any chance of a P&ID of pipework, or sketch obviously condenser, purge lines etc.Last edited by RANGER1; 28-09-2021 at 05:23 AM.
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25-10-2021, 09:33 PM #5
Re: Discharge Pressure High in Ammonia System
Seems problem solved ....
It's impossible to make anything foolproof because fools are so ingenious...
Don't ever underestimate the power of stupid people when they are in large groups.
Please, don't teach me how to be stupid....
No job is as important as to jeopardize the safety of you or those that you work with.