induction cooks (1 Viewer)

[mr EaZy]

why cant aluminium be used as a material in induction cookpans?

i read this in the solutions of a trial paper .........................

 

[ontherun]

i think they can be used mr eazy!

from a book i read they said that eddy currents can be used as a break.
In this case they discuss tripple beam balances used in schools, and they say that aluminium plate are used between 2 magnetsto produce the eddy currents!

i know dis isnt an explanation for inuc. cookers but its under the same heading: EDDY CURRENTS

 

[d_elmo]

mr eazy was that in the 2003 independent trials cause i think i remember seeing that too, and i had no idea what that meant either

 

[mojako]

i think they can be used mr eazy!

thats what I was going to say
but I wasnt so sure so I subscribe to this thread instead

aluminium shoud even be better than iron because it's a better conductor of electricity

 

[ontherun]

yeh thats right

 

[DavidB]

aluminium shoud even be better than iron because it's a better conductor of electricity

Hm good point...BUT (aha!!)
Iron is a ferromagnetic material, that is iron is best for intensifying the magnetic feilds that are needed to create these eddy currents. (thats why Iron is used a core for transformers).
Im not exactly sure about how good Aluminium is when it comes to intenisfying the magnetic feild but im sure its not as good as iron.

peace

 

[mojako]

Hm good point...BUT (aha!!)
Iron is a ferromagnetic material, that is iron is best for intensifying the magnetic feilds that are needed to create these eddy currents. (thats why Iron is used a core for transformers).
Im not exactly sure about how good Aluminium is when it comes to intenisfying the magnetic feild but im sure its not as good as iron.

peace

aluminium is a poor conductor of magnetism
but u dont need to intensify the field

in a transformer, u want the secondary coil to experience changing magnetic flux.
between primary and secondary coils is the core.
if the core was aluminium it would block the magnetic field (or flux or whatever)
you can have aluminium as the secondary coil
we usually use copper for coil because it's cheaper

the cookpans (I imagine it's the thing where you put ur food in.. and u wash it in the dishwasher later) is like the secondary coil...

 

[DavidB]

I get you....sort of, but then again my answer was an attempt to explain this.

y dunt we agree and nod our heads in satisfaction?

 

[mojako]

hmm.. probably

but we shud get mr EaZy to type up the full question for us...

 

[speersy]

Just a quick question, what are electric ranges?

 

[Xayma]

Aluminium will experience eddy currents it is easily shown with a peice of aluminium sheeting. As it satisfies the conditions of being a conductor. As to why it can't be used I don't know.

 

[mr EaZy]

hmm.. probably

but we shud get mr EaZy to type up the full question for us...

sorry no can do....

aluminium can be used and thats that!

the solutions was wrong and just blabbering on about materials for no reason.

in fact i would prefer aluminium coz it doesnt corrode and is a good conductor,

because its expensive, id probably use an aluminium/titanium alloy for no reason whatsoever (it sounds good)

 

[mr EaZy]

wat happened to "ilovechildren7" ?

 

[Xayma]

He was banned and his posts purged.

I think Aluminium isnt used as it doesn't have a high enough melting point in that the eddy currents will caused localised melting, just an idea.

 

[mojako]

wat happened to "ilovechildren7" ?

his posts were deleted..
http://www.boredofstudies.org/community/search.php?searchid=176992

can u type the full question for me pls?
and the full exact answer too if u dont mind

 

[mojako]

He was banned and his posts purged.

I think Aluminium isnt used as it doesn't have a high enough melting point in that the eddy currents will caused localised melting, just an idea.

hmm.. MP is 660 ^oC.. how hot is it usually for induction cooks (I seriously have no idea)

but otherwise, you seem right

 

[Jase]

Hot enough to cook stuff i'd hope.

I think they don't allow aluminium for the same reason they keep writing stupid questions.

 

[Xayma]

It would be fairly hot locally, in Jacaranda it had "High melting point metal".

 

[speersy]

Just a quick question, what are electric ranges?

good question, anybody got a quick answer?

 

[helper]

stoves that use induction coils for their elements, setting up eddy currents in the saucepan, which because of the resistance heat up.