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A small example of worthwhile forward planning
Posted: Fri Jul 29, 2022 3:53 pm
by Joeboy
Hi guys,
The power has went off here at the apartment, there has been a fire in Icemeler, not sure if connected. Nonetheless here at Casa De (Turkish branch) the following is now in use.
200ltr cold water tank gravity charging home & specifically lower floor shower.
80ltr HWT full, hot and on stand by.
Two 15kgs gas cylinders for cooking. Gas hob & bbq.
Two usb battery packs fully charged for Internet hotspot and phones.(33,800mAh total).
Fridge upper icebox with 7ltrs frozen water now in use doing the heavy lifting in g&t creation and beer cooling. Oh aye plus food preservation!
The entire apartment, walls, roof, contents have been pulled down to 25 degs over the last 10 days or so and are very
. Curtains closed.
Doesn't look that much as a list compared to our varied camelot stored energy systems yet we are running bang on here, not even a bodyswerve in the road. Good for 36 hrs I reckon before the power off bites into us.
Just chucking this out for entertainment and food for thought.
Re: A small example of worthwhile forward planning
Posted: Fri Jul 29, 2022 4:06 pm
by Moxi
Just shows that it pays to be prepared - glad its working out so far and i hope the power isn't off too long, we are exporting 2.75kW at present here so I am about to start reducing the water content of the CaCl2 i collected from the little dehumidifiers over winter to see if we can recycle them - I will post in the correct thread when I make any progress.
Moxi
Re: A small example of worthwhile forward planning
Posted: Fri Jul 29, 2022 4:46 pm
by Stinsy
Joeboy wrote: ↑Fri Jul 29, 2022 3:53 pm
Hi guys,
The power has went off here at the apartment, there has been a fire in Icemeler, not sure if connected. Nonetheless here at Casa De (Turkish branch) the following is now in use.
200ltr cold water tank gravity charging home & specifically lower floor shower.
80ltr HWT full, hot and on stand by.
Two 15kgs gas cylinders for cooking. Gas hob & bbq.
Two usb battery packs fully charged for Internet hotspot and phones.(33,800mAh total).
Fridge upper icebox with 7ltrs frozen water now in use doing the heavy lifting in g&t creation and beer cooling. Oh aye plus food preservation!
The entire apartment, walls, roof, contents have been pulled down to 25 degs over the last 10 days or so and are very
. Curtains closed.
Doesn't look that much as a list compared to our varied camelot stored energy systems yet we are running bang on here, not even a bodyswerve in the road. Good for 36 hrs I reckon before the power off bites into us.
Just chucking this out for entertainment and food for thought.
What is your PV/battery situation in Turkey?
Re: A small example of worthwhile forward planning
Posted: Fri Jul 29, 2022 6:13 pm
by Joeboy
Re: A small example of worthwhile forward planning
Posted: Sat Jul 30, 2022 1:50 am
by Mr Gus
Que ?
Re: A small example of worthwhile forward planning
Posted: Sat Jul 30, 2022 9:05 am
by Joeboy
I would be interested in trying out the brine solution too. Is there a standard grammes of salt per kilo of water in making the solution?
Certainly on yesterday evening real test all the drinks size ice cubes remained intact and the ice box swiftly pulled the heat out of fridge warm beer.
I reckon we would be good with no lifestyle impact for at least 48hrs here without power, maybe more.
Re: A small example of worthwhile forward planning
Posted: Sat Jul 30, 2022 1:55 pm
by Stinsy
Joeboy wrote: ↑Sat Jul 30, 2022 9:05 am
I would be interested in trying out the brine solution too. Is there a standard grammes of salt per kilo of water in making the solution?
Certainly on yesterday evening real test all the drinks size ice cubes remained intact and the ice box swiftly pulled the heat out of fridge warm beer.
I reckon we would be good with no lifestyle impact for at least 48hrs here without power, maybe more.
I went for 30g/l because this is approximately the saltiness of seawater. I think I needed much more than this.
Re: A small example of worthwhile forward planning
Posted: Sat Jul 30, 2022 2:00 pm
by Joeboy
Stinsy wrote: ↑Sat Jul 30, 2022 1:55 pm
Joeboy wrote: ↑Sat Jul 30, 2022 9:05 am
I would be interested in trying out the brine solution too. Is there a standard grammes of salt per kilo of water in making the solution?
Certainly on yesterday evening real test all the drinks size ice cubes remained intact and the ice box swiftly pulled the heat out of fridge warm beer.
I reckon we would be good with no lifestyle impact for at least 48hrs here without power, maybe more.
I went for 30g/l because this is approximately the saltiness of seawater. I think I needed much more than this.
Thanks Stinsy, I had look about on the net and apparently 23% weight of salt in solution will see the freeze point move all the way down to minus 19. I'd maybe try 200grmms per ltr and see if it freezes at -16 deg c.
Re: A small example of worthwhile forward planning
Posted: Sat Jul 30, 2022 3:42 pm
by openspaceman
Joeboy wrote: ↑Sat Jul 30, 2022 2:00 pm
Stinsy wrote: ↑Sat Jul 30, 2022 1:55 pm
Joeboy wrote: ↑Sat Jul 30, 2022 9:05 am
I would be interested in trying out the brine solution too. Is there a standard grammes of salt per kilo of water in making the solution?
Certainly on yesterday evening real test all the drinks size ice cubes remained intact and the ice box swiftly pulled the heat out of fridge warm beer.
I reckon we would be good with no lifestyle impact for at least 48hrs here without power, maybe more.
I went for 30g/l because this is approximately the saltiness of seawater. I think I needed much more than this.
Thanks Stinsy, I had look about on the net and apparently 23% weight of salt in solution will see the freeze point move all the way down to minus 19. I'd maybe try 200grmms per ltr and see if it freezes at -16 deg c.
I posted "I will be watching the result too but to get to 0 Fahrenheit I think you will need 26% salt by weight.
So I think you need to dissolve 310 grams of salt in 1.5 litres of water."
0 Fahrenheit was chosen by Fahrenheit because it was the coldest he could get I think, it's about -19C which is and ideal point for a freezer to toggle around but there has to be enough heat exchange surface for it to melt overnight from the heat getting into the freezer from outside as the delta T is only a a small change in temperature for the heat of fusion to be taken up between solid and liquid.
If the freezer is super insulated and not opened then it may not warm up enough to melt the brine, OTOH from looking at my overnight battery consumption it looks like my freezer comes on about 5 times for about an hour between midnight and 08:00.
Re: A small example of worthwhile forward planning
Posted: Sat Jul 30, 2022 3:45 pm
by Joeboy
openspaceman wrote: ↑Sat Jul 30, 2022 3:42 pm
Joeboy wrote: ↑Sat Jul 30, 2022 2:00 pm
Stinsy wrote: ↑Sat Jul 30, 2022 1:55 pm
I went for 30g/l because this is approximately the saltiness of seawater. I think I needed much more than this.
Thanks Stinsy, I had look about on the net and apparently 23% weight of salt in solution will see the freeze point move all the way down to minus 19. I'd maybe try 200grmms per ltr and see if it freezes at -18 deg c.
I posted "I will be watching the result too but to get to 0 Fahrenheit I think you will need 26% salt by weight.
So I think you need to dissolve 310 grams of salt in 1.5 litres of water."
0 Fahrenheit was chosen by Fahrenheit because it was the coldest he could get I think, it's about -19C which is and ideal point for a freezer to toggle around but there has to be enough heat exchange surface for it to melt overnight from the heat getting into the freezer from outside as the delta T is only a a small change in temperature for the heat of fusion to be taken up between solid and liquid.
If the freezer is super insulated and not opened then it may not warm up enough to melt the brine, OTOH from looking at my overnight battery consumption it looks like my freezer comes on about 5 times for about an hour between midnight and 08:00.
Sorry OSM missed that one! The freezer out here goes down to minus 16. I am also planning for a chest freezer in the cabin back in Scotland so it is all circling in my head.
When we had less battery storage I timed the freezer to go off through the night and kick back in when the odds favoured the likelihood of PV generation. Another minor timeshifting of power use and preserving that battery soc to the morning. I could see something similar in a chest freezer but with the added lift of the brine blocks being started in Solar days until solid and the freezer being off through the night and kicking in at 10am?
Seems I can't look at anything anymore without thinking of timeshifting energy use.