Hi everyone.
We have a Glycol chilling system that pumps out 30% glycol at about 22F. We are aiming to chill our tanks to 32-34F. We find that temperatures fall until about 38F then often stick there. The chiller seems to be working fine, so we think there may be a problem in the heat transfer between the beer and the cooling panels in the vessels.
One time we dry hopped at about 38F and the temperature fell quickly to 34F. One theory is that the direction of convection changes at about 38F and so momentum of cooling is lost. Another is that a thin film of ice can build up leading to ineffective heat transfer. Has anyone else come across this and how did you solve it? Would some agitation of the beer (like with the dry hopping action) at 38F kick the last phase of cooling into action?
Cheers!
Robert
We have a Glycol chilling system that pumps out 30% glycol at about 22F. We are aiming to chill our tanks to 32-34F. We find that temperatures fall until about 38F then often stick there. The chiller seems to be working fine, so we think there may be a problem in the heat transfer between the beer and the cooling panels in the vessels.
One time we dry hopped at about 38F and the temperature fell quickly to 34F. One theory is that the direction of convection changes at about 38F and so momentum of cooling is lost. Another is that a thin film of ice can build up leading to ineffective heat transfer. Has anyone else come across this and how did you solve it? Would some agitation of the beer (like with the dry hopping action) at 38F kick the last phase of cooling into action?
Cheers!
Robert
Comment