Thanks for the feedback Coffeesnobs
I measured the boiler up, its about 190mm in diameter and 180mm high
so 2(pi)r2 + 2(pi)r x h = 0.165 m2 with the longest strip about 0.6 meters in length.
With regards to heating up a small boiler (and from my homeostasis classes at first year uni) the rate of heat gain/loss is explained by the surface area : volume ratio. A small boiler has a small volume (less energy to heat up), but a comparatively larger area to loose the heat from. A larger boiler may take more energy to heat, but the surface area to loose the heat to is comparatively smaller, the potential rate of heat loss is slower. Think of the heat loss/gain of a small child in the cold as opposed to an adult. This was my justification for the insulation anyway.
I have included a couple of pics of my machine. Im a bit embarrassed, its still a work in progress.
The first shot was taken when I picked it up, note the milk residue on the steam wand (the grinder hopper is out of the photo) I thought twice about getting the two in one grinder/machine combo, but space is a bit of an issue. The grinder turns out to be the makings of a Cunill Marfil so I was pleasantly surprised.
Photo two is the current state. See if you can count how many parts have been removed? Im keen on insulating it, now I have access to the spotlessly clean and naked boiler. Ive had it for two months now and it is yet to pull its first shot. Not sure I can hold out much longer!
Fingers crossed someone may still have a bit of silicone left over.
Cheers
ExpoMCM
Resized image to 640 x 480 profile
Mal.
I measured the boiler up, its about 190mm in diameter and 180mm high
so 2(pi)r2 + 2(pi)r x h = 0.165 m2 with the longest strip about 0.6 meters in length.
With regards to heating up a small boiler (and from my homeostasis classes at first year uni) the rate of heat gain/loss is explained by the surface area : volume ratio. A small boiler has a small volume (less energy to heat up), but a comparatively larger area to loose the heat from. A larger boiler may take more energy to heat, but the surface area to loose the heat to is comparatively smaller, the potential rate of heat loss is slower. Think of the heat loss/gain of a small child in the cold as opposed to an adult. This was my justification for the insulation anyway.
I have included a couple of pics of my machine. Im a bit embarrassed, its still a work in progress.
The first shot was taken when I picked it up, note the milk residue on the steam wand (the grinder hopper is out of the photo) I thought twice about getting the two in one grinder/machine combo, but space is a bit of an issue. The grinder turns out to be the makings of a Cunill Marfil so I was pleasantly surprised.
Photo two is the current state. See if you can count how many parts have been removed? Im keen on insulating it, now I have access to the spotlessly clean and naked boiler. Ive had it for two months now and it is yet to pull its first shot. Not sure I can hold out much longer!
Fingers crossed someone may still have a bit of silicone left over.
Cheers
ExpoMCM
Resized image to 640 x 480 profile
Mal.

Comment