Sunamp failure - NOW FIXED!

[Jeremy Harris]

33 minutes ago, SteamyTea said:

Can you get it analysed to find out what is in it. We have a lazer spectroscope thinking at work, not sure if it does all chemicals or just metals, never tried it out.

 

I could post you a lump of it easily enough.  I've got a few bits sat in a box here from the big icicle of the stuff that formed down the rear of the case.

[DamonHD]

I'd quite like a small lump to sit on top of my Thermino, maybe to instill a sense of mortality in it!  B^>

[SteamyTea]

1 hour ago, Jeremy Harris said:

I could post you a lump of it easily enough

Going up country tomorrow, so almost passing your place if you are about.

[Barney12]

3 hours ago, Nickfromwales said:

 Bean-counters prob won’t like the materials or manufacturing costs of that solution methinks, but for north of £6k for supply and fit, there’s should be enough frigging meat on their bones…

if you take a deep dive into their accounts (yes, I know I’m sad but I’m blaming the jet lag). They are all bones and no meat ! 

[Jeremy Harris]

34 minutes ago, SteamyTea said:

Going up country tomorrow, so almost passing your place if you are about.

 

We've got a couple of things on tomorrow, but if you know roughly when you might be around I'm sure I can be in.  Not sure how big a lump you would like, this is the largest of the  bits I've kept:

 

[Nickfromwales]

44 minutes ago, Barney12 said:

if you take a deep dive into their accounts (yes, I know I’m sad but I’m blaming the jet lag). They are all bones and no meat ! 

Met a chap at a public show who’d just paid £14k for 2x Thermino 210 units (replacement names for the old 9’s) and I almost keeled over.

WTF. 

[Nickfromwales]

2 hours ago, Jeremy Harris said:

 

I could post you a lump of it easily enough.  I've got a few bits sat in a box here from the big icicle of the stuff that formed down the rear of the case.

I’ll chop it up and give it to the crackheads down the train station. 👍.

 

[Onoff]

Around £230 for 25kg and it comes with it's own plastic containment vessel! 

 

 

If there's space for expansion inside the Sunamp then how does it expand / rupture?

 

For some reason I always thought the PCM was contained in a vacuum, is it?

[Nickfromwales]

13 minutes ago, Onoff said:

For some reason I always thought the PCM was contained in a vacuum, is it?

Nope, it's the insulation panels which are vacuum sealed jobbies, as in the best bang for the thinnest footprint. 👍

[JohnMo]

6 hours ago, Onoff said:

Thinking 316 (marine grade) stainless would be ok with the "salt" that is the SAT

Not a good material, as when in a saline environment 316 or 316L suffers pitting corrosion especially at or close to 60 degs. So you really need super duplex or even titanium. So not cheap.

[Nickfromwales]

15 minutes ago, Onoff said:

Around £230 for 25kg and it comes with it's own plastic containment vessel! 

 

 

I'll drop the wife's hair straighteners in that, poke 3 holes in the top, and name it "Sanump". Dragons Den here I come.

[JohnMo]

15 minutes ago, Onoff said:

Around £230 for 25kg and it comes with it's own plastic containment vessel! 

 

 

If there's space for expansion inside the Sunamp then how does it expand / rupture?

 

For some reason I always thought the PCM was contained in a vacuum, is it?

Think if you mix with Agar Agar, the solidification process becomes more repeatable and repeatable over time

[Jeremy Harris]

Worth noting that although sodium acetate is chemically a salt, it's not very reactive, in fact it's used as a neutralising buffer for sulphuric acid to stop it being corrosive.

 

The reason table/road salt is so reactive is because it's a chloride I think.  Halogens want to react with anything and everything, hence the reason that swimming pools are evil environments for anything that might possibly corrode.  Chlorine will attack a very wide range of materials, even at very low concentrations.  I made the mistake of leaving a 5 litre container of hypochlorite path cleaner in the shed.  The lid was on tightly and the container was in a plastic bag, with a cable tie around the neck, as it had been shipped,  It wasn't leaking but the miniscule amount of chlorine that escaped was enough to surface rust everything in the shed within a couple of weeks.

[Jeremy Harris]

2 hours ago, DamonHD said:

I'd quite like a small lump to sit on top of my Thermino, maybe to instill a sense of mortality in it!  B^>

 

 

I can post you a small lump if you want, Damon, might be a bit crumbly as the one big lump is that bit I've promised @SteamyTea. 

 

Not sure if I've still got your address, though, perhaps you can PM me if you'd like a bit to threaten your Thermino with, to make sure it keeps behaving itself. . .

[Mike]

5 hours ago, Jeremy Harris said:

My gut feeling is that for not too much money it would be useful to have a standby hot water system, even if it only has a modest capacity.  Even a 3 or 4 minute hot shower would be a heck of a lot better than no shower!

I have just such a system: one 20L electric tea urn + a rechargeable camping shower - total cost around £100, no plumbing required :)

[Jeremy Harris]

17 minutes ago, Mike said:

I have just such a system: one 20L electric tea urn + a rechargeable camping shower - total cost around £100, no plumbing required

 

 

Funnily enough I ordered one of those USB rechargeable camping showers 2 days ago!  To get warm water for a shower I put together a Heath Robinson arrangement using stuff I had around, two spare 20W, 12V silicone rubber heating mats (I had to buy four when I only needed one for a bag warmer), a 6A, 12V power supply and a couple of 5 litre lidded buckets.  This worked very well, the heaters were plonked into each bucket and left on all night.  By the morning we had two buckets of water at around 38°C, which was fine for  a sort of cup-over-head type shower.  we could have filled them from the boiling water tap, as the boiler for that holds 20 litres, but that would have meant carrying the buckets upstairs, which seemed like too much effort first thing in the morning!

 

The bucket warming experiment, before I set them up properly upstairs: