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Author Topic: Water Distiller  (Read 417 times)
nowty
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« on: May 12, 2019, 03:22:51 PM »

I bought one of these last year to make my own distilled water for my Forklift Batteries and for the other half's ironing machine and found it well worth the money.

The unit costs about £50 and makes 4 litres at a time using 700W for about 4.5 hours so uses nearly 1kWh per each litre of distilled water.
I managed to make enough water last summer solely using my own PV leccy to last until spring so the running costs to me are zero.

It works by having a 700w heater to boil the water and a fan which air cools the small condenser at the top. If it boils dry it just cuts out.

Even though I have now sold my lead acid batteries we still need lots of water for the ironing station as we have very hard water which knackers them in no time and gives out white flakes.
Running it now in Springtime also allows the wasted heat from it to heat the house a little too.

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10kW of PV installed and 50+ MWh generated.
Usable battery storage of 45+ kWh.
Hot Water storage of 15+ kWh.
Heat storage of 15+ kWh.
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Home grown Fruit and Veg.
todthedog
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« Reply #1 on: May 12, 2019, 03:38:29 PM »

Excellent idea.
One of those bits of kit that I would really like but have no conceivable use for, no lead acid batteries nor iron. Great thing about being a senior citizen, you can look like 'Compo' and neither you or anyone else cares wackoold

A good 50 quid if you have a battery bank.
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stannn
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« Reply #2 on: May 12, 2019, 05:01:42 PM »

https://thekidshouldseethis.com/post/can-namib-desert-beetles-help-us-solve-our-drought-problems-stenocara-gracilipes
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2.45 kWp PV (Navitron supply), 40 evacuated tubes (Navitron supply), Clearview 650 log burner with back-boiler heating cottage and water, 2 off 50W border collies, 1 off 35W cat, 1 off 25W cat.
oliver90owner
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« Reply #3 on: May 12, 2019, 09:09:35 PM »

Most seem to be double the cost of that one.  They are popular (particularly with a 300W element) for the home distillers who make their own spirits (illegal in the UK).  Apparently the 700W ones don’t separate the alcohol from the water quite as well.

I get more than sufficient distilled water for my needs from my workshop dehumidifier.
« Last Edit: May 12, 2019, 09:11:58 PM by oliver90owner » Logged
Countrypaul
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« Reply #4 on: May 12, 2019, 10:45:31 PM »

Most seem to be double the cost of that one.  They are popular (particularly with a 300W element) for the home distillers who make their own spirits (illegal in the UK).  Apparently the 700W ones don’t separate the alcohol from the water quite as well.

I get more than sufficient distilled water for my needs from my workshop dehumidifier.

The water from a dehumidifier will contain many contaminents not present in distilled water. A dehumidifier will "wash" lots of organic matter from the air, you only need look at the filters to realise how much is caught by them and how much of the smaller particle size gets through into the water.  The water from a dehumidifier is fine for many uses, but nothing like as sae as distilled water.
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oliver90owner
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« Reply #5 on: May 12, 2019, 11:02:16 PM »

My workshop is draught-proof and the desiccant dehumidifier does not start until about 6 hours after the shop is locked up for the night.  Nothing at all trapped in the filter in six months.  I would think that as most of the airflow does not go through the condenser at all - and that which does is hot, initially, - there is much less ‘washed out’ than a compressor type of machine.

It generally collects less than 2 litres per week - far more than the steam cleaner or iron needs. Smiley  Its main requirement is to maintain the workshop at a temperature where condensation on my machines is avoided.  Some of the collection surplus is watered to lime-hating plants and they have not complained so far...
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Nickel2
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« Reply #6 on: May 13, 2019, 07:01:36 AM »

Distilled water is good for cleaning mirrors and windows, as it leaves no smears. When my bathroom mirror steams up, I just wipe it over with the end of a towel.  Wink (no need for proprietary products)
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myozone
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« Reply #7 on: May 13, 2019, 04:41:37 PM »

I remember a school I worked at had a still running 24/7 (3kw)


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Philip R
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« Reply #8 on: May 13, 2019, 04:46:23 PM »

Ref coolecting water from a dehumidifier. #3 and #4.

During the winter we dry out washing on a maiden set up in the cloak room. The water collected from the dehumidifier is added to the cistern of the loo after flushing, so that it is not wasted. The distillate smells of comfort fabric conditioner, so must be impure and full of ions.

Philip R
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knighty
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« Reply #9 on: May 13, 2019, 10:43:47 PM »

nice post nowty... I just ordered an identical one on ebay for my forklift batteries :-)
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nowty
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« Reply #10 on: May 13, 2019, 11:23:49 PM »

Knighty, a couple of tips,

1) Although you can let it run dry, I find it scales up terribly although I guess it depends on how hard your water is. I find if you throw away the last bit of water before its finished, you get rid of a lot of the scale before it sticks to the surface. Use oven gloves to lift the top off if you are doing this as you get a very hot waft of steam as you lift it off.

2) When you do lift the top off, try and put the top down in an upright position. If you lay it on its side as I did, sometimes a bit of water from the condenser finds its way onto the fan electrics and it trips your RCD when you switch it back on. But its fine once it dries off.
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10kW of PV installed and 50+ MWh generated.
Usable battery storage of 45+ kWh.
Hot Water storage of 15+ kWh.
Heat storage of 15+ kWh.
6kW Ground Source Heatpump.
230,000+ litres of water harvested from underground river.
Home grown Fruit and Veg.
djs63
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« Reply #11 on: May 15, 2019, 07:33:53 AM »

What is it like distilling sea water?
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6 Kw Proven wind turbine, 15 Navitron evacuated solar hot water tube array and 1.8 Kw PV, grid connected (SMA inverters) and GSHP supplying radiators and UFH. Wood burning stove (Esse 300) and oil fired Rayburn. Rainwater harvesting 4000 litre tank underground. Nissan Leaf
knighty
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« Reply #12 on: May 15, 2019, 08:32:38 AM »

Knighty, a couple of tips,
1) Although you can let it run dry, I find it scales up terribly although I guess it depends on how hard your water is. I find if you throw away the last bit of water before its finished, you get rid of a lot of the scale before it sticks to the surface. Use oven gloves to lift the top off if you are doing this as you get a very hot waft of steam as you lift it off.
2) When you do lift the top off, try and put the top down in an upright position. If you lay it on its side as I did, sometimes a bit of water from the condenser finds its way onto the fan electrics and it trips your RCD when you switch it back on. But its fine once it dries off.

thanks for the tips!

I think I might put it on a timer, so I can fill it and forgot for an hour (ot 2, or whatever)

or... I was tempted to try and join in an external tank so I can leave it running for a few hours

very hard water here at work tho!
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