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You mean the advantage of using semi hermetic compressors is that it's more easy to replace the bearing ?
Why it's easier to change bearings in semi hermetic more than the open drive compressors?
...

Hello all,

I have a question regarding the a/m title.

In the centrifugal chillers industry i see only YORK uses open drive centrifugal compressors rather than semi-hermetic compressors used by...

I am really asking for this reason bro :D and you can see thier are two different opinions here.

By the way i am sure that having lower relative humidity for the entering air temperature will make...

Please clarify , what SST stands for ?

First of all , No one have asked me about the software selection's name , i have been asked only whether it's availble for everyone or not . it's not available by the way , i only have access for it...

Horizontally , in the direction of air flow.
Unfortunately , it requires a license.

Send me a mail please and it will be my pleasure to share with you the printed technical data by the software...

I have used definetly two different software selections for AHUs ( reputable and reliable brands in AHU industry ) and i kept everything constant i just changed the entering air relative humidity...

I actually agree with your words here , i am just wondering where did the statement " add more rows to remove more moisture " came from ?

I see that when the amount of sensible heat increases...

No it's a computer selection software for air handling unit. I just enter the entering air conditions ,cooling capacity, maximum air velocity, fins per inch and air flow , It gives me the sensible...

Hi all,
In the selection of the cooling coil for an Air handling unit , i found that as the entering air relative humidity decreases the Sensible heat ratio increases and the number of rows increase...

Well , is there any advantage to prefer using r410a with hermetic compressor !?
Regarding the heat exchanger pressure ratings , if we are talking about chillers , i dont think using r410a or r134a...

Hi all,
Why scroll compressors usually use R410a while screw compressors usually use refrigerants like R134a ?

What charasterstics in R410a make it perefarable to be used with scroll compressors...

Thank you so much

I am talking in general and Yes i am talking about the system where pressure difference is used to move the oil without oil pump.

Okay can you stat the low pressure parts during shut down ? And...

Hi all,
I want to know what is the function of the master solenoid valve in the lubrication system of the screw compressor . I think it prevents oil migration to the lower pressure parts during...