Here's what I cut out of a 16" metal duct for my windscreen/shroud.
I haven't done tests yet re: with/without shroud, but between a 2k heatstick to heat my mash/sparge water & to preheat my 1st runnings combined with this shroud, I think I used considerably less propane for my last brew..
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Here are results from boil tests:
NO SHROUD: 2 gallons of water @ 57.1F to rolling boil in 6 min, 51 seconds.
WITH SHROUD: 2 gallons of water @ 53.9F to rolling boil in 5 min, 30 seconds.
If someone with the ability to determine the efficiency can analyze these boil times & temps(BTU's etc), I'll add that data here as well. It is definately obvious that the shroud does keep the heat more on the pot resulting in faster boils.
I haven't done tests yet re: with/without shroud, but between a 2k heatstick to heat my mash/sparge water & to preheat my 1st runnings combined with this shroud, I think I used considerably less propane for my last brew..
~~~~~~
Here are results from boil tests:
NO SHROUD: 2 gallons of water @ 57.1F to rolling boil in 6 min, 51 seconds.
WITH SHROUD: 2 gallons of water @ 53.9F to rolling boil in 5 min, 30 seconds.
If someone with the ability to determine the efficiency can analyze these boil times & temps(BTU's etc), I'll add that data here as well. It is definately obvious that the shroud does keep the heat more on the pot resulting in faster boils.