Re: Low Temperature Chiller Screw Compressor
A bit abstract for bulk handling - nether the less;
What are you replacing with the screw compressor?
Depends a large number of variables.
Also depends on what efficiency you are referring to - the compressor or the cycle?
Have a look at the following (intro into Thermo) if intersted:
http://www.google.com.au/search?hl=e...on+cycle&meta=
Regards,
Lyle ■
Re: Low Temperature Chiller Screw Compressor
An additional compressor will have to share the single supply from the condensate receiver (you've missed a few vessels out of your system reference). Unless the units are perfectly matched, they can't be, there are different demands on the condensate receiver outlet branches. You will have to ensure that there is no chance of flashing in the supply line due to a sudden unit shutdown.
But your process engineer will have already checked against flashing as part of his review of the extra loadings introduced. What are the present & intended TR's involved? Even if the pipes will take it you will have to push seriously more water through the condenser. Can the (CCW?) pumps oblige?
If you increase the coefficient of performance then you have greater heat leakage & might have to slap on extra lagging.
Because of the high CAPEX for a refrigeration plant it is usually precisely designed for the original application. ■
John Gateley johngateley@hotmail.com www.the-credible-bulk.com
Re: Low Temperature Chiller Screw Compressor
Dear John and lyle brown
I'm sorry for the simple description in my previous question.
Actually, the additional screw compressor ( horizontal semi hermetic rotary screw compressor) is to alternate the operation with the existing compressor.
Both of compressor are the same capacity ( 85 KW or 24 tonne) and running altenately.meaning that, Only one compressor will work at the certain time.
Each compressor come with the automatic valve in order to control( close/open) the refrigerant flow.Definitely, each compressor will have share the condensate receiver, condenser,evaporator and refrigerant pipeline.
It's not a cascade refrigerant system which is use both of compressor at the same time?
I'm concern about the risk that will arise if i proceed this installation, in term of refrigerant cycle and the whole system operation.What do you think?
*Attached the refrigerant cycle drawing*
Attachments
refrigerant cycle system (JPG)
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Re: Low Temperature Chiller Screw Compressor
A good move to put in a standby unit. I can't see any problem. Good Luck! ■
John Gateley johngateley@hotmail.com www.the-credible-bulk.com
Re: Low Temperature Chiller Screw Compressor
Dear John
Thank you.
Happy new year!
best regardds
Hamzah ■
Low Temperature Chiller screw compressor
Dear All
I intend to install additional new screw compressor for my existing chiller, and the compressor will share the existing refrigerant pipeline, condenser tube and evaporator.
I want to know either the new installation of this compressor will effect the efficiency of the existing chiller system.
Anybody have comment on this idea?.
Best Regards
Syachah ■