In ammonia refrigeration, removing non-condensable gases is not optional maintenance; it is essential for system performance. Air and other non-condensables raise discharge pressure, increase compressor workload, and reduce overall capacity. Over time, even small amounts can translate into measurable energy penalties and unnecessary mechanical stress. The two primary methods for removing these gases are manual purging and automatic refrigerated purging. Both methods are used

If you’ve worked around modern industrial ammonia refrigeration systems, you’ve likely encountered a plate-and-frame heat exchanger. While shell-and-tube exchangers have long been the workhorse of the industry, plate-and-frame units have become increasingly common where efficiency, tight temperature control, and space savings are priorities. Plate-and-frame heat exchangers are widely used in ammonia systems for ammonia-to-water or ammonia-to-glycol chillers, heat recovery app

If you’ve spent any time around industrial ammonia refrigeration, you’ve seen a shell-and-tube heat exchanger. It is one of the most common ways to transfer heat between two fluids without letting them mix, and it appears throughout ammonia systems. Shell-and-tube heat exchangers show up all over industrial ammonia refrigeration because they can serve many duties in one durable package. You may see them as water-cooled condensers, where hot, high-pressure ammonia vapor is con

I’ve been in a lot of facilities that technically have piping colors, but no visual legend to explain what those colors actually mean. Especially as a recent graduate getting started in the ammonia PSM industry, which turned machinery rooms into instant mazes instead of functional workspaces. You’d see blue, yellow, orange, and green everywhere—but without a key, none of it told a story. It was just paint on the pipe. In an ammonia machinery room, piping density is high, and