How Multi ejectors work - working principle CO2 refrigeration
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Date: 2023-11-17
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Comments and reviews: 9
Manolis
Great video as always. I only have one objection. At the beginning you mention that CO2 is non-toxic, however at 10% concentration it can be lethal (one of the reasons that using a CO2 fire extinguisher in confined spaces is not a good idea) while OSHA's guidelines say that 3% is the maximum concentration in workspaces.
How are systems using CO2 protected against potential leaks. Is there a a safety requirement for CO2 detectors or ventilation where CO2 systems are present?
It does have great potential though as a refrigerant.
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Great video as always. I only have one objection. At the beginning you mention that CO2 is non-toxic, however at 10% concentration it can be lethal (one of the reasons that using a CO2 fire extinguisher in confined spaces is not a good idea) while OSHA's guidelines say that 3% is the maximum concentration in workspaces.
How are systems using CO2 protected against potential leaks. Is there a a safety requirement for CO2 detectors or ventilation where CO2 systems are present?
It does have great potential though as a refrigerant.
reply
username
Why don't they just make an ideal vapor compression system with an energy recovery turbine instead of an expansion valve? That is the point of the ejectors, to use the excess pressure after the gas cooler isn't it? But this system uses multiple compressors, so the added cost and maintenance couldn't be the reason, and a turbine can have a variable load applied to act as a valve. Is it like a rankine condensate pump, where it's only
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Why don't they just make an ideal vapor compression system with an energy recovery turbine instead of an expansion valve? That is the point of the ejectors, to use the excess pressure after the gas cooler isn't it? But this system uses multiple compressors, so the added cost and maintenance couldn't be the reason, and a turbine can have a variable load applied to act as a valve. Is it like a rankine condensate pump, where it's only
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James
So 4, 6 injectors are available are the all feeding the receive? 3 other ports are not discussed they feed the evaporator s?
Very impressed with this liquid inertia inertia system. New to me I feel I can comprend if I just had more time with, nd found out about three remaining ports. Thanks so much to danfloss, nd your video. Can you elaborate some more?
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So 4, 6 injectors are available are the all feeding the receive? 3 other ports are not discussed they feed the evaporator s?
Very impressed with this liquid inertia inertia system. New to me I feel I can comprend if I just had more time with, nd found out about three remaining ports. Thanks so much to danfloss, nd your video. Can you elaborate some more?
reply
RSBot2jar
I was wondering about the following; I have my compressor going from, let's say, 35 bar to 100 bar. Is the CO2 leaving the compressor instantly a supercritical fluid? If you would look at the P-T diagram, then you would say yes, but it's kinda weird to wrap your head around.
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I was wondering about the following; I have my compressor going from, let's say, 35 bar to 100 bar. Is the CO2 leaving the compressor instantly a supercritical fluid? If you would look at the P-T diagram, then you would say yes, but it's kinda weird to wrap your head around.
reply
Jesse
So I like your videos and what you do, but i have one small problem that an engineer should spot. The gears in your logo will not turn sice you have 3 gears touching. I don't know if that's on purpose or if it's a special functional gear set that I haven't seen.
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So I like your videos and what you do, but i have one small problem that an engineer should spot. The gears in your logo will not turn sice you have 3 gears touching. I don't know if that's on purpose or if it's a special functional gear set that I haven't seen.
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kaustubh
Can you create a video on package ac about 16TR or more bigger capacity. its designing also working. Package ac connected with duct system(Air cooled system) and closed water system(water cooled system.
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Can you create a video on package ac about 16TR or more bigger capacity. its designing also working. Package ac connected with duct system(Air cooled system) and closed water system(water cooled system.
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Dwayne
Great video learn a lot. Here in the Caribbean I always worry about the critical temperature point of refrigerants and their ability to change phase. In high ambient applications.
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Great video learn a lot. Here in the Caribbean I always worry about the critical temperature point of refrigerants and their ability to change phase. In high ambient applications.
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Asisipho
Very informative, thank you. Do you have a video that you can refer me to with a de-superheater unit on the system. Thank you in advance.
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Very informative, thank you. Do you have a video that you can refer me to with a de-superheater unit on the system. Thank you in advance.
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Leon!
Current HVAC Intern here. Great videos! Really helping me to understand all the basics. You should do a video about zoning!
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Current HVAC Intern here. Great videos! Really helping me to understand all the basics. You should do a video about zoning!
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