Originally Posted by itsme6582
I think you'll have some issues getting that tube to heat your water to sparge temps. I know I've seen threads before where it's been tried. I can't vouch for the successfulness.
I keep going over a system in my head where I use a RIMS tube to heat my HLT, mash in, recirc and maintain MLT temp. During mash I would lose heat in the HLT but it would still be hot enough to use the RIMS tube to get back up there on the fly. The difference here would be heating up 120+ degree water rather than tap water. The problem I keep running into is that this seems like an overly complicated way to go about it. Then my mind wanders to the German setup which is kinda like RIMS BIAB.http://morebeer.com/search/104230
I have been using a 5500 watt RIMS tube for sparge water with good success. I try to sparge at about 1 quart per minute and have ground water at about 48 deg. Have no problem holding 170 output at that flow rate.
I based my design on Sizz's thread
for the liquid flow.
Heat capacity of water = 4.184 joules per ml per deg K
947 ml. = 1 qt.
Delta T = 130 deg. F = 72 deg. C
1 joule = 1 watt second
based on a 40 deg. F water source:
947 ml/min = 16 ml/sec
16ml/sec * 4.184 joule/ml C * 72 C = 4820 joules/sec = 4820 watt
With a 5500 watt element the efficiency must be above 87% to maintain that flow rate.
Observation of my system seems to agree with this, as the element is on over 3/4 of the time when I have a higher ground water temperature in the summer.
Mounting your RIMS tube as you show will probably lessen the heat loss that I have with silicone tubing between the RIMS and the mash tank. Looks like a good idea.