What is the purpose of a pressure differential gauge in the design of the inlet and outlet of an ammonia cooler?

It can indirectly indicate a problem with the cooling water supply volume; a large differential pressure indicates that an excessive amount of water is being supplied.

I believe installing pressure difference gauges at the inlet and outlet of the ammonia cooler can indicate whether there are issues such as internal leaks or blocked pipes.

Pressure difference meters are installed at the inlet and outlet of the ammonia cooler, primarily to reflect its operating condition. For specific models of ammonia coolers (tubular or coiled type), the operating pressure difference remains stable; if it is too high, it may indicate blockages or flow deviations, and in such cases, treatment via steaming or disassembly for inspection should be carried out. The pressure gauge on the ammonia pipe at the outlet of the ammonia cooler can indicate whether there is a cross-leakage phenomenon (high pressure leaking into low pressure).

The pressure gauge installed in the ammonia cooler is mainly used to determine whether the ammonia cooler is clogged.

Agree with what was said above; the main task is to monitor whether the ammonia cooler is blocked. This is especially important during the initial operation of the synthesis system, as well in cases of leaks in the water cooler – water enters the synthesis circuit and freezes in the ammonia cooler due to the drop in temperature, thereby blocking the pipes and increasing the pressure difference between the inlet and outlet of the ammonia cooler

The function of the pressure differential gauge installed at the inlet and outlet of the ammonia cooler is mainly to determine whether the heat exchange tubes of the ammonia cooler are blocked by crystallization due to excessive levels of CO2 in the feed gas.

Regarding the function of the pressure differential gauge used at the inlet and outlet of ammonia-cooled air systems, there are differing opinions between juniors and seniors. I believe its purpose is to measure the pressure difference between the inlet and outlet of the ammonia cooler, in order to assess the efficiency of cooling. I understand that ammonia coolers work on the Joule-Thomson effect (that is, based on the principle of throttled expansion); the greater the pressure difference at the inlet and outlet, the more pronounced the Joule-Thomson cooling effect, and conversely, the cooling performance will be poor. Therefore, the inlet and outlet pressure difference gauge is used to determine the quality of the throttling refrigeration process in the ammonia cooler. This is just my humble opinion; I hope it can be corrected. Feel free to give feedback

This differential pressure gauge certainly cannot detect leakage issues; if there is a leak, it is sufficient to analyze whether the low-pressure side contains characteristic products from the high-pressure side. Agree with moderator Yan’s opinion

Pressure difference meters are installed at the inlet and outlet of the ammonia cooler, mainly to determine whether there is any blockage in the tubes inside the cooler and whether there are leaks in the gas partitions between the inlet and outlet. However, under normal conditions, due to the low resistance of the ammonia cooler, the readings provided by the instruments in our plant are often inaccurate, so they don’t hold much value for inspection purposes. It is mainly determined based on the cooling effect as well as the evaporation liquid level, gaseous ammonia pressure, and temperature inside the ammonia cooler.

6# zyh924116 Can water leak into the ammonia cooler? Who has high stress?