Industrial Refrigeration system Basics - Ammonia refrigeration working principle
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Date: 2023-11-17
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Comments and reviews: 25
Vijitha
Awesome presentation! . I found this while searching for Amonia system issues as I am having prolong issue in my Ammonia compressor. Grateful if you could support me to solve it.
We have a two stage ammonia compressor connected to Blast freezer of -40 C. At start it perform well and while room temperature down to -30 C Compressor oil pressure reduces gradually below to the set point ( 1, 5 bar) and shuts down. All the components were checked, replaced ( bearing, pump, filters, oil etc ). nothing didn't solve the issue. But one day in a test run suddenly, the machine picked up the oil pressure and run as normal. It continuously ran for two weeks without problem and all of a sudden again the same issue occurred. Now we are helpless. If anybody can support us, it is very much appreciated. !
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Awesome presentation! . I found this while searching for Amonia system issues as I am having prolong issue in my Ammonia compressor. Grateful if you could support me to solve it.
We have a two stage ammonia compressor connected to Blast freezer of -40 C. At start it perform well and while room temperature down to -30 C Compressor oil pressure reduces gradually below to the set point ( 1, 5 bar) and shuts down. All the components were checked, replaced ( bearing, pump, filters, oil etc ). nothing didn't solve the issue. But one day in a test run suddenly, the machine picked up the oil pressure and run as normal. It continuously ran for two weeks without problem and all of a sudden again the same issue occurred. Now we are helpless. If anybody can support us, it is very much appreciated. !
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Steve
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.
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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.
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WJCTechyman
I know when ammonia systems age and fail they are pretty catastrophic like in BC a twin rink arena system failed killing a technician, municipal workers and a couple of firefighters. Our one ice rink arena in town was dangerously worn out and it had the ammonia system run under the rink. Ammonia is probably obsolete by todays standards as rink systems from ice cube (stylized as ice3) (the system in use at our newer arena) use R410A and are only charged with 20 lbs of it.
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I know when ammonia systems age and fail they are pretty catastrophic like in BC a twin rink arena system failed killing a technician, municipal workers and a couple of firefighters. Our one ice rink arena in town was dangerously worn out and it had the ammonia system run under the rink. Ammonia is probably obsolete by todays standards as rink systems from ice cube (stylized as ice3) (the system in use at our newer arena) use R410A and are only charged with 20 lbs of it.
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Steve
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.
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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.
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Steve
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!
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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!
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Ferdio
hey brother i have some issue with electricity regarding to High Med Low working condition. could you help me with this? as high pressure consumes more electricity and I dont know how to calculate cost thus I dont understand with working condition means
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hey brother i have some issue with electricity regarding to High Med Low working condition. could you help me with this? as high pressure consumes more electricity and I dont know how to calculate cost thus I dont understand with working condition means
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Steve
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.
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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.
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Alex
First day doing industrial refrigeration. Worked on an ammonia chiller and this video just simplified all the shit that I saw today.
I bled out the oil into a bucket and got a good whiff of that good ole ammonia. Smells like death!
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First day doing industrial refrigeration. Worked on an ammonia chiller and this video just simplified all the shit that I saw today.
I bled out the oil into a bucket and got a good whiff of that good ole ammonia. Smells like death!
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Thomas
Do you have an ammonia refrigeration example similar to the Design a refrigeration system video with example calcs? Not sure how to deal with the liquid/vapor mixture coming out of the evaporator. Thanks. These are all great videos!
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Do you have an ammonia refrigeration example similar to the Design a refrigeration system video with example calcs? Not sure how to deal with the liquid/vapor mixture coming out of the evaporator. Thanks. These are all great videos!
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Joshua
2: 12 You're forgetting that when Anhydrous ammonia reacts with water, it generates heat. At certain storage densities, this is bad you get a runaway reaction which leads to a massive explosion. This is what happened in Beirut.
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2: 12 You're forgetting that when Anhydrous ammonia reacts with water, it generates heat. At certain storage densities, this is bad you get a runaway reaction which leads to a massive explosion. This is what happened in Beirut.
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MetalliEquus33
Ammonia has an ozone DEPLETION of ZERO?
Ammonia is no longer created for the fact of how bad it is for the environment. however it is the best refrigerant dues far. Explain that to me unless Im missing something
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Ammonia has an ozone DEPLETION of ZERO?
Ammonia is no longer created for the fact of how bad it is for the environment. however it is the best refrigerant dues far. Explain that to me unless Im missing something
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James
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: -)
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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: -)
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Allan
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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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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The_Professor
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!
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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!
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Aubrey
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!
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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!
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Joshua
Would you consider tackling the absorption ammonia refrigeration system? I realize these are small scale but your delivery is so great, it would make my day: )
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Would you consider tackling the absorption ammonia refrigeration system? I realize these are small scale but your delivery is so great, it would make my day: )
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education
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
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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
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Methuselah
Thanks for making it easy to understand. Been working on an NH3 plant Ref for 11 years. NH3 as our primary & H20 / Glycol as secondary Ref. Thank you
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Thanks for making it easy to understand. Been working on an NH3 plant Ref for 11 years. NH3 as our primary & H20 / Glycol as secondary Ref. Thank you
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Penguins
I was on an ammonia hazmat team. We did have a leak that I discovered in the beef fabrication department while working food safety.
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I was on an ammonia hazmat team. We did have a leak that I discovered in the beef fabrication department while working food safety.
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SNOWFLAKES_DIE
Pardon my ignorance. If ammonia systems are more environmentally friendly, why are they not used in the automotive industry?
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Pardon my ignorance. If ammonia systems are more environmentally friendly, why are they not used in the automotive industry?
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KYSER
Sub titles are hindering the illustrations, modify it, or keep margin for it. rest best technical e learning forum, keep it up
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Sub titles are hindering the illustrations, modify it, or keep margin for it. rest best technical e learning forum, keep it up
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DingoHammer
8: 53. How can increasing the pressure of the receiver help liquid flow more easily from the condenser to the receiver?
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8: 53. How can increasing the pressure of the receiver help liquid flow more easily from the condenser to the receiver?
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Mohammad
Why is the S-10 ammonia tank bigger than the S-30 tank? Although the pressure at S-30 is lower than the pressure at S-10
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Why is the S-10 ammonia tank bigger than the S-30 tank? Although the pressure at S-30 is lower than the pressure at S-10
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Josafat
what is the condensing temperature of co2 and evaporating temperature of ammonia in the cascade condenser?
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what is the condensing temperature of co2 and evaporating temperature of ammonia in the cascade condenser?
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Ali
You will definitely be rewarded by God for this. as you are helping a lot there for free. Love you man
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You will definitely be rewarded by God for this. as you are helping a lot there for free. Love you man
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