Nothing In Particular

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Paul Barker
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#16651 Re: Nothing In Particular

Unread post by Paul Barker »

Just buy a big bag of citric acid on ebay, cheaper than that gauge.

This will mean you can turn back into a normal layman instead of reinventing the wheel, in a trade you dont understand.
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brig001
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#16652 Re: Nothing In Particular

Unread post by brig001 »

Is this for me Paul?
I am a layman and don’t understand, but I’m learning. How will citric acid help? There’s always something else to know

Brian
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andrew Ivimey
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#16653 Re: Nothing In Particular

Unread post by andrew Ivimey »

Citric acid disolves the calcium carbonate build up - just guessing!
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#16654 Re: Nothing In Particular

Unread post by brig001 »

Makes sense, thanks Andrew
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Paul Barker
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#16655 Re: Nothing In Particular

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brig001 wrote: Fri Jul 05, 2024 8:19 pm Is this for me Paul?
I am a layman and don’t understand, but I’m learning. How will citric acid help? There’s always something else to know

Brian
It breaks down limescale. The limescale coats youre immersion and or youre coil if dual fuel which is inefficient heat transfer.
"Two things are infinite, the universe and human stupidity, and I am not yet completely sure about the universe." – Albert Einstein
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#16656 Re: Nothing In Particular

Unread post by brig001 »

Thanks Paul 👍
Any thoughts on my idea?
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Paul Barker
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#16657 Re: Nothing In Particular

Unread post by Paul Barker »

I dont understand what I see., if you could put a photo of youre dhw storage device that would help.
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Nick
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#16658 Re: Nothing In Particular

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I believe he is trying to measure the average temperature of the water by measuring the change in the length of the container.
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#16659 Re: Nothing In Particular

Unread post by brig001 »

Yes, that’s it Nick
It should increase by 1mm from all cold to all hot
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Nick
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#16660 Re: Nothing In Particular

Unread post by Nick »

You will (of course) need some averaging to avoid floor movement.
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#16661 Re: Nothing In Particular

Unread post by Morgan Jones »

An intriguing experiment, and nice to see a Mercer dial gauge - I have a very similar one bought for setting the timing on my CZ125 in 1982. I wonder how much the warmth of the (imperfectly insulated) tank warms the surroundings, causing them to expand? Still, it's not a formal physics experiment and the results should be good enough.
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#16662 Re: Nothing In Particular

Unread post by brig001 »

Thanks both
Good points and if I can get it to nearest 5% I’ll be happy. It is always 100% first thing in the morning, so can zero any offsets there
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#16663 Re: Nothing In Particular

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Are they related?
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#16664 Re: Nothing In Particular

Unread post by brig001 »

The results are in, and it works!
One small proviso; when the tank heats up, the pressure increases slightly and that causes the tank to expand too. Once a tap is run for a few seconds, the pressure drops to normal and it is fine after that

When I say the pressure increases, it’s enough to see in the height of the tank, but not enough to notice at the taps. The first point of the graph is before a tap has been opened, the second is after a few seconds of tap running. All other points match hot water usage - showers etc

I have normalised the graph to after the tap was opened for a few seconds. Height is in mm referenced to that point
Tank Height.png
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#16665 Re: Nothing In Particular

Unread post by Morgan Jones »

So the x-axis is time and the y-axis is dial gauge measurement?
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