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CraigF
07-09-2012, 05:32 PM
Can anybody outline in laymans terms how a glycol system works and why they are used in a system that needs to hit -40?? The system is in a corrosion testing chamber.

Thanks in advance

install monkey
07-09-2012, 05:43 PM
basically a wet system with antifreeze, your glycol circuit will transfer heat from a fan coil unit to the evap shell.
by using glycol there could be a dry cooler that will give free cooling by rejecting heat from the glycol to the ouside air - free cooling, also the use of an actuator will give close control.

CraigF
07-09-2012, 05:53 PM
This system uses a cascade refrig system to get to the -40c. I take it this is one refrig system to cool another?

CraigF
07-09-2012, 05:54 PM
sorry im full of questions, this glycol cascade is all new to me!

install monkey
07-09-2012, 05:57 PM
if cascade then the evap of the histage will cool the condenser of the low stage, an intercooler
http://www.google.co.uk/imgres?hl=en&sa=X&biw=1366&bih=622&tbm=isch&prmd=imvnsfd&tbnid=tWYiWIQgjzOdLM:&imgrefurl=http://www.essproducts.com/cascade_condensing_units.htm&docid=PbxTSFFPQMx-dM&imgurl=http://www.essproducts.com/images/image7.gif&w=754&h=566&ei=GCdKUNvjMcKb0QW0toC4CQ&zoom=1&iact=hc&vpx=1043&vpy=144&dur=296&hovh=194&hovw=259&tx=189&ty=64&sig=118214322987115371238&page=1&tbnh=127&tbnw=174&start=0&ndsp=19&ved=1t:429,r:5,s:0,i:85

CraigF
07-09-2012, 06:06 PM
Thanks monkey! thats a great link there!

RE forum strikes again!