Industrial refrigeration system basics, in this video we’ll be looking at how ammonia refrigeration systems work, starting at the basics to understand how industrial refrigeration systems work. We’ll be looking at system schematics and animations to build your refrigeration knowledge. We cover why we use ammonia, where we use industrial refrigeration, single stage systems, two stage systems and cascade systems.


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45 thoughts on “Industrial Refrigeration system Basics – Ammonia refrigeration working principle

  1. K K says:

    nice video. do you maybe know some refrigeration plant in Serbia and help me to find job please? my ex company is not working anymore and i cant find job

  2. Steve Lamperta says:

    The expansion valve and the regulating valve you have backwards ! The expansion valve goes in between the evap and ammonia pump . And normally a single stage system doesn't use ammonia pumps , they run off the receiver pressure . the regulator valve belongs in between the condensor and receiver to put a diff of head pressure of around 150lbs to 75lbs receiver pressure.

  3. Steve Lamperta says:

    The regulator valve and expansion valve are almost the same , the only difference is the expansion valve has much better and consistent adjustment for the very much important amount of liquid ammonia going into the evaporator . The regulator valve controls the pressure differential between the condenser and receiver . the head pressure runs around 125 an 150lbs , an the receiver runs at 75lbs pressure differentials are key , as that's how the system works. I was a manager of several companies with ammonia refrigeration systems .

  4. Steve Lamperta says:

    There's no need for the ammonia pump in this single stage system , The 75lbs of receiver pressure will push the liquid ammonia into the evaporators , Which are also in a vacuum ! Think about it for a minute , the receiver has 75lbs pressure which is going to a evaporator that is in around 8 inches of vacuum ! Why would you need a pump ??? you wouldn't !

  5. Steve Lamperta says:

    Don't need the liquid separator either . This system is set up wrong with equipment it doesn't even need ! I have built a few engine rooms in my time. I worked with a guy who trained me and we called him the ammonia God ! lol Really smart man .

  6. The_Professor says:

    Great explanation…

    I have an alternate method to this that is way more efficient than a cascade. We have hit -112c with a single stage system and can get much lower. Patent Pending!

  7. James Samples says:

    I love this video. It's in my nature to nick pick, I think it's my way of forcing me to stay focused.
    "Unwanted Heat from Evaporators"… Oh come on, Engineering Mind Set, you are harder to please than my ex-wife 🙂

  8. Aubrey Roche says:

    Awesome… I am an Industrial Supervising Electrician. We work on all Electrical and Control for these systems, while also doing Everything else that is Industrial Electrical. Loved this Video !

  9. Allan Weitman says:

    I'm currently taking my power engineering level 5 and this is super helpful for understanding when you are just learning. The videos they have with the course are so boring/terrible/old. I'm so glad I found these

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