What is the R-value of insulation on your beer brewhouse, beer fermentation tank(FV) and beer bright tank(BBT)?
R-value represents the insulation material’s ability of stopping heat from being lost. The higher R-value means the higher performance.
Here we have a formula to get R-value. R=H/λ.
H means the thickness of the insulation layer. λ means the thermal conductivity.
The average λ-value of rock wood is 0.04w/m.k, while Polyurethane(PU) is 0.025w/m.k. For our brewhouse, we use 80mm rock wool as insulation layer.
According to R=H/λ. The R-value is 2
For the FV and BBT, we use 80mm Polyurethane(PU). The R-value is about 3.2
You can see PU has higher R-value than rock wood. But rock wool has higher temperature resistance than PU. That is why we use rock wool on brewhouse while PU is on FV and BBT.
Edited by Kevin
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