Boiling Point & Expansion Coeff of Wort

[GregR]

Does anyone know the actual (average) boiling point of wort?

Also, any idea if wort's thermal expansion coefficient is much different than water?


Thanks!

Greg

[CapeCodBeer]

volume of boiling wort at 100 deg C x 96% = volume of cool wort at 20 deg C

Cheers,

Todd

[Woolsocks]

I don't know the average, but mine almost always boils at 99°C, as does water where I am. One day the barometric pressure was such that my wort boiled at 100°C, but that's only happened to me once.

I've heard the .96 factor as well as far as contraction after boiling.

[Moonlight]

1.043, that is 4.3% larger at boiling than at room temp. The volume change is exponentially more at the higher temps. To be honest, this is for water, but I have always found it to be close enough for my calcs.

[GregR]

Yeah, sounds like using the calcs for water will be very close.

I know adding a solute to water lowers its boiling point --- so I'd assume adding the sugars of wort does as well, but sounds like it's not enough to be significant for brewing purposes.

Thanks!

[ClaudiusB]

I know adding a solute to water lowers its boiling point --- so I'd assume adding the sugars of wort does as well, but sounds like it's not enough to be significant for brewing purposes.


If the wort specific gravity goes up, so does the boiling point.

Cheers,
ClaudiusB