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14-01-2013, 11:02 AM #1
Re-use of cold in refrigeration system
Hello,
I am a process engineer currently working on a project concerning a low temperature operation. I try to make a proces scheme for an energy efficient cooling system in which part of the refrigrant-condensation is accomplished by using 'waste-cold' from a cold product stream. However not enough cold is available for the complete condensation and so additional cooling is required (preferrably) with an air condensor. This means two compressors and a 'high' and 'low' temperature condensation steps.
Is there someone who can tell me something about commercially available systems for the above described situation?
Thank you in advance,
Bart
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14-01-2013, 02:17 PM #2
Re: Re-use of cold in refrigeration system
I am afraid that my above written post is not very clear. In fact I am also curious to hear about any kind of options that are available to have a refrigeration cycle with two different condensing temperatures.
Thank you,
Bart
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14-01-2013, 04:57 PM #3
Re: Re-use of cold in refrigeration system
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You don't need two compressors you need two condensers.
The first condenser will remove the superheat and then the second
could do the actual condensing, maybe using a water cooled condenser
as a de-superheater and then you get the added bonus of heat recovery.
Then once you have de-superheated the discharge vapour you can then
use your waste cold process to condense the refrigerant.
Regards
Rob
.Last edited by Rob White; 15-01-2013 at 01:31 PM.
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15-01-2013, 12:06 AM #4
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15-01-2013, 07:43 AM #5
Re: Re-use of cold in refrigeration system
Are you talking about a CO2 vapouriser/ re-condeser