Tap or de-ionised/distilled water?

Zanzibar

epninety wrote: »

So you boil the water, and it furs up your kettle... and somehow the impurities are higher than for the original tap water? Have you created mass from energy? Or does the kettle draw impurities out of the air around it? :rotfl:

I don't understand...

When you boil water you have reduced its mass by a percentage. So, whatever is in the water is now more concentrated - e.g. its how concentrated orange juice is made - its initially reduced down to a concentrate by evaporating the water off.

That reduced liquid now has a higher proportion of everything as its water content has been reduced. So its a yes to "..and somehow the impurities are higher than for the original tap water?" as its proportions you are dealing with.

If some mineral deposits are left on the element then you may argue boiled water has less of those but it would be minimal and selective as to what was deposited.

The basic point is that its the evaporated water that should be used not the reduced residual water.

cyclonebri1

epninety wrote: »

So you boil the water, and it furs up your kettle... and somehow the impurities are higher than for the original tap water? Have you created mass from energy? Or does the kettle draw impurities out of the air around it? :rotfl:

I don't understand...

You clearly don't.
You have simply reduced the volumn of water and thereby increased the "Crap/nutrients/residues" within the fluid.

Stephen_Leak

I agree that cooled boiled water is going to contain more concentrated impurities than it did when it was tap water, which was exactly why I was wondering about using distilled or de-ionised water. The distilled water is the steam that boiled off, re-condensed. I know de-ionised is slightly different, but it's cheaper to make. I will be keeping to the manufacturers dilution (50%), which is for corrosion protection rather then extreme low temperature protection. The trouble is that I'm still confused.

vaio

what do the manufacturers say?

mikey72

Using boiled water
google temporary water hardness,
if it's your water, it's removed on the first boil in your kettle, so better for your radiator, if your kettle stays clean, boiling first won't do anything for you.

Inactive

Does urine have a high calcium content?, if not it could be free cure.. :rotfl:

There is usually a few on here that seem good at extracting it..

closed

A few litres of tap water, boiled or otherwise isn't going to fur your engine up. The argument over boiled concentration is superfluous, the percentage of the volume evaporated when boiling a kettle is insignificant.

cyclonebri1

Inactive wrote: »

Does urine have a high calcium content?, if not it could be free cure.. :rotfl:

There is usually a few on here that seem good at extracting it..

You are taking the *iss aren't you??

epninety

Zanzibar wrote: »

That reduced liquid now has a higher proportion of everything as its water content has been reduced. So its a yes to "..and somehow the impurities are higher than for the original tap water?" as its proportions you are dealing with.

True. I was thinking that the impurities from the steam were precipatated out, forming the solids left in the kettle, but that's only true of some of the impurities (predominantly Calcium Carbonate), and only a proportion of those. 11am is far too early for thinking

mikey72

Only true for permanent hardness, and trace elements. But the opposite for temporary hardness.