Our High Purity Nitrogen Unit at the Digboi Refinery, IOCL, is equipped with a 35 TR Refrigeration System. Although there are no external leaks, we are facing a persistent decrease in system pressure. Despite checking for tube leakage in the Evaporators and Condensers, replacing the TEV, and ensuring no leaks in the Compressor circuit, the issue remains unresolved. We are seeking advice from Refrigeration and Air Conditioning professionals to help us diagnose and resolve this ongoing pressure drop problem. Your input is greatly appreciated. Regards, Ramkrishna Paul from Digboi, India.
Are you facing issues with leaks in your system under pressure? Our technology at UE Systems can help pinpoint and detect problems effectively. If the pressure cannot be held, it indicates a leak somewhere in the system. How have you tested for tube leakage? - Dave. Learn more about leak detection applications at UE Systems.
Using UV dye in your refrigeration system can help detect minuscule leaks efficiently. This technology has been proven effective in the field and I recommend consulting an experienced HVAC contractor who is knowledgeable about incorporating UV dye for leak detection in refrigeration systems.
Hi Ramkrishna, have you examined the possibility of an internal leak? Sometimes, the system pressure can drop due to an internal leak in the heat exchanger, especially if it's of a type like a shell and tube or plate and frame. Since your compressor and TEV seem fine and there are no external leaks, an internal leak might be interfering with the refrigeration cycle. Non-condensable gases, if present, can cause pressure drops too. A purge system or a refrigerant identifier could help identify this. Keep us posted with your findings. Good luck!
Hi Ramkrishna, based on your description, it seems like you've covered most of the common causes for a decrease in system pressure. One area not mentioned though are potential issues with the refrigerant. Could it be that the refrigerant charge is insufficient or that you are using the wrong type or a poor quality refrigerant? Sometimes even minor issues like improper refrigerant can lead to significant drop in pressure. Ensuring that the charge is optimal and the refrigerant is of the right type and good quality could possibly resolve the issue.
Hi Ramkrishna, it sounds like you've done a thorough job troubleshooting so far! One possibility to consider is the performance of your expansion device and whether it's consistently metering refrigerant correctly. Another area that might be worth checking is any potential issues with the refrigerant charge itself; low or incorrect charges can sometimes lead to pressure drops without obvious leaks. It could also be beneficial to look into whether there are any issues with the insulation on your system that might be affecting performance. Best of luck, and I hope you find a solution soon!
✅ Work Order Management
✅ Asset Tracking
✅ Preventive Maintenance
✅ Inspection Report
We have received your information. We will share Schedule Demo details on your Mail Id.
Answer: Answer: The pressure drop issue could be caused by various factors such as internal leaks, faulty components, improper system maintenance, or issues with the refrigeration system.
Answer: Answer: Steps taken include checking for tube leakage in Evaporators and Condensers, replacing the TEV, ensuring no leaks in the Compressor circuit, and seeking advice from professionals.
Answer: Answer: The professionals are expected to help identify any underlying issues causing the pressure drop, offer troubleshooting guidance, and suggest potential solutions to restore system pressure.
Answer: Answer: High purity nitrogen is essential for various refinery processes, and a pressure drop issue can disrupt operations, affect product quality, and lead to production delays or inefficiencies.
Join hundreds of satisfied customers who have transformed their maintenance processes.
Sign up today and start optimizing your workflow.