I know a similar question was in another post but I need more specific answers.
In the summer it takes forever (and wastes water & would like to make hotter water to clean with) to knock out our 8.5bbl system's 280 +/- gallons of wort
We'd like to speed things up by adding another heat exchanger and a small glycol system - be nice to have when doing lagers too.
Anyway here are my calculations bases on a formula posted here somewhere..
say we have 300 gallons knocking out....
Dreamy summer speed- in 45 minutes (6.6 GPM)
want to take it from 85 to 72 degrees (-13 F)
GPM X temp Change X 500 = 42,900 btu
OR...
Decent summer speed- 60 minutes (5GPM)
= 32,500 btu
?1- should we use the glycol to chill down the 55F city water (to what temp should we chill the h2o?) with a second heat exchanger before it cools the wort
OR the wort - passing it through an exchanger with the glycol- as it comes out of the primary water chiller at about 85F?
Remember... I want to produce about 150- up to 200 gallons of piping hot water for our HLT.
?2- could we use a 'portable' 1 ton chiller for this application (the idea appeals to me) - since we'd only be using it once or twice a week & we don't need it running all the time?
if not... what would be the smallest size to handle this short but intense application?
?3 what size heat exchanger would we need?
?4How do BTUs needed relate to the size (tons) we need & HP? Any other ideas to save us time & produce less but hotter water?
(No- we don't have room in our walk in to pre chill water for knock out & fyi we use cold water in an old grundy tank -with a coil of Freon inside- in our cold room to chill our 4 FVs - at any one time only one calls for cooling - usually- does the job)
Thank you!
Heather McNabb
In the summer it takes forever (and wastes water & would like to make hotter water to clean with) to knock out our 8.5bbl system's 280 +/- gallons of wort
We'd like to speed things up by adding another heat exchanger and a small glycol system - be nice to have when doing lagers too.
Anyway here are my calculations bases on a formula posted here somewhere..
say we have 300 gallons knocking out....
Dreamy summer speed- in 45 minutes (6.6 GPM)
want to take it from 85 to 72 degrees (-13 F)
GPM X temp Change X 500 = 42,900 btu
OR...
Decent summer speed- 60 minutes (5GPM)
= 32,500 btu
?1- should we use the glycol to chill down the 55F city water (to what temp should we chill the h2o?) with a second heat exchanger before it cools the wort
OR the wort - passing it through an exchanger with the glycol- as it comes out of the primary water chiller at about 85F?
Remember... I want to produce about 150- up to 200 gallons of piping hot water for our HLT.
?2- could we use a 'portable' 1 ton chiller for this application (the idea appeals to me) - since we'd only be using it once or twice a week & we don't need it running all the time?
if not... what would be the smallest size to handle this short but intense application?
?3 what size heat exchanger would we need?
?4How do BTUs needed relate to the size (tons) we need & HP? Any other ideas to save us time & produce less but hotter water?
(No- we don't have room in our walk in to pre chill water for knock out & fyi we use cold water in an old grundy tank -with a coil of Freon inside- in our cold room to chill our 4 FVs - at any one time only one calls for cooling - usually- does the job)
Thank you!
Heather McNabb
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