Chiller - Oil lubrication and cooling
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- Опубліковано 31 бер 2017
- In this video we take a look at the oil lubrication system of a typical chiller, using illustrations and narrative to build your base knowledge.
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Learn *CHILLER CONTROLS* here: ua-cam.com/video/OghkQFVKmPQ/v-deo.html
Mind blowing knowledge thx for technical sound video on chillers
the best illustration
Thanks for another great video! Any coming on economizers, flash tanks, etc? Using approach, water side piping/valving/bypass configurations?
Sir Thanks for videos.
(1) Can you explain lubricant system in screw chiller compressors.
(2) Can you explain how water chillers different with brine (minus degrees) chillers. Sir, you should also make a videos on minus degree chillers
Please make a video on Primary and Secondary water pumps and loops.
Bundle of thanks........ Stay happy... :)
Great content, but a correction, the oil becomes low viscosity as it is heated, at low temperature oils have higher viscosity. For example water has a viscosity of around 1 centipoise, while table oils have viscosity in the dozens or hundreds of centipoises, while Tar has a viscosity in the billions.
You right
Yes viscosity is a fluid’s resistance to flow.
Awesome explanation, keep it up, please do upload video on PACKAGE system,BOILER , HUMDIFIERS also.Thank you
How's this one on heating system ua-cam.com/video/lDeuIQ4VeWk/v-deo.html
thanks sir
When the temperature of oil is increased it will have less viscosity rather than high . thats why we use heater in the sump unit. but ya have said the opposite. kindly remove that mistake.
Thanks for making such videos . they are pretty helpful. thank you very much.🙏
hello thanx for this great and useful video...
may you send me anything about the power for oil pump and vsd Hows control it or if u can talk about it.
thanx alot
Can you please explain a reciprocating chiller in detail. That will help many people to pass MRO exam for NYC. Thank.
To take out refrigerant from oil sump one copper pipe is connected to the suction of the compressor. Since the suction in compressor occur at low pressure how the oil does not go along with refrigerant to the compressor ?
Hey bro please define magnetic compressor type chiller and how does work magnetic compressor?
Will the lubricant in contact with the refrigerant gas? Is it necessary to have a compatible lubricant type to cope with the refrigerant?
i thinnk good brother
Can you please tell me about Screw chiller's oil injection. Why use oil heater in compressor. And loading and unloading valve.?
Thanks and God bless you.I have same chiller. But I have oil lost problem. Can you please explain the reason behind it
Sounds like you have a leak! You need to check where it's going and make sure it doesn't get into the compressor
LOL! I'm all answering questions on here. Sorry! I just love chiller work. But I hate cooling towers. That's why I always recommend air cooled RTAH's or RTAC's chillers, to avoid cooling tower headaches. I don't see the advantage of water cooled over air, in a critical environment. If city water gets cutoff you're screwed. *Maybe you know why some places prefer water cooled?* To me it seems like the energy used to pump the condenser water and run the tower fans kills the efficiency. Not to mention this application in a place (like Georgia, USA) that doesn't get cold enough to take advantage of free cooling through plate and frame heat exchangers.
Hii sir. What is importance of oil pressure in chiller...
@5:20 , why the oil return from compressor thrust bearing was not returned back to Oil sump for pressurisation ?
Because the oil coming from thrust bearing is connected to the dicharge line of the sump pump. As a result, the oil cools down very quickly and the oil goes back to thurst bearing
Hi How much Lubricant required for a 200 ton Chiller
If the pipes in the chiller leak, how to fix it? Please advise.
Sir, there are two gauges one for high pressure and other low pressure on chiller . What is this represents? Is this oil pressure
No ..oil pressure transducer located on the top of the oil sump.
can you please explain the alarm, that will in running time, like comp low pressure alarm, customer alarm, anti freeze alarm etc. please explain each alarm why they will come and how should we respond...
here try this video ua-cam.com/video/Zu0LVVNNVSw/v-deo.html
What is the reason for low oil sump level?
Hai sir ,how to maintain oil feed temperature?
Whats is the Outlet and inlet oil pressures in this Oil pump?
Please check with the manufacturer guide, it will be stated there for the make and model you require
@@EngineeringMindset in some chiller they provide filter drier for what purpose
Trane Centra-vacs 800 ton is 18 to 22 psi DP. I only know this because they're the chillers we have at my work. I would imagine it depends on pump size, oil type, bearing size, etc... Engineered calculations.
Sir what is the common problem if the chiller alarm about , thrust bearing temperature high?? Thank you
Depends on the chiller. If it's cooled by the refrigerant then there might be a blockage. It should give you an error code, you'll need to check this with the manufacturer.
@@EngineeringMindset if I start up the chiller maybe 15 second it will trip and then I saw to monitor that error..i check already the sensor for the thrust bearing it is ok... do you think sir maybe the thrust bearing is the problem?? Or the compressor??
Is there any chance that the oil gets mixed with the refrigerant and oil then circulates into the system with the refrigerant and probably, lower the efficiency ? Kindly illustrate that point and what will happen then..? Also, how to prevent it ?
Yes, it can happen depending on the design.
Many chillers have oil separators built in.
@@EngineeringMindset but what sort of design it would be.. Why it would be designed that it may get in fault of getting the oil mixed up with refrigerant..
thank you , but you don't explain dehydrator system in chiller
How to maintain AuH
Plz inbox..
You wrong when you say about oil viscosity.
Explain then.
Oil viscosity decreases with increase in temperature. Cold oil is more viscous
liquids show a reduction in viscosity with increasing temperature. With high temperatures, viscosity increases in gases and decreases in liquids, the drag force will do the same.
But in YOUR VIDEO you are saying that Cool lubricants have High Viscosity and if we heat them the viscosity become low
www.azom.com/article.aspx?ArticleID=10036
Please SHARE your views with me and help us thank you so much ...Dear !!!
The cooling lubricant is oil based and will decrease in viscosity with temperature. It behaves much like honey. If you put a jar of honey in the fridge it will thicken and will not run or flow easily, but if you warm it in the microwave it will flow much easier. Try it and see.