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Thread: additional liquid line cooling
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27-09-2021, 02:49 PM #1
additional liquid line cooling
I'm sure I asked this before but can't find the thread :-o
I've had a lot of different opinions from different engineers, some aay what I want to do will work, some say it won't work at all
I'm using truck body freezers as blast freezers (with my own equipment on them)
expanding and adding 7 more
I'm trying to get the best out of what I already have / what I buy
I'm thinking about adding heat exchanges to the liquid lines to chill them using a water chiller
water chiller seams the best option here, good second hand units are quite cheap, I appreciate direct cooling via refrigeration would be better but it would be murder to balance the system out if I have 20 separate systems all running at different loads and temperatures
I have an abundance of solar power, so power use / efficiency isn't as important as it normally is
I thought about this originally for summer time high temperatures, but now I'm wondering if it would be better to run year round
I guess my questions are...
is it worth it?
will it work?
how will it effect system capacity?
should I cool before or after the receiver? - liquid line to evaporator is much simpler, but would pre-receiver be better?
looking at the capacity chard of my condensing units, for example...
https://www.elektronika-sa.com.pl/tc...FD&RID=3&Tab=2
(404a)
will cooling just the liquid line to the evaporator shift me up the capacity chart?
e.g. -20 evap temp
27'C evap/ambient temp is 7.75kw cooling
43'C evap/ambient temp is 5.80kw cooling
almost 2kw difference... will chilling the liquid line increase system capacity like this?