Search found 39 matches

by unklegrumpknee
Jun 12 2020 11:08am
Forum: Alternative Energy
Topic: Energy storage
Replies: 15
Views: 2321

Re: Energy storage

If you were to build a new house 2k - 2.5k sq ft, Insulate it well , put up a double car garage and put a basement under it, and insulate it. Fill it with water , there is enough heat value in it to heat your house the entire winter. Summer season there is enough ice for the summer for cooling in n...
by unklegrumpknee
Jun 08 2020 9:56am
Forum: Battery Technology
Topic: Lipo hybrid systems
Replies: 10
Views: 283

Re: Lipo hybrid systems

If this stuff is so low draw, a moderate size separate battery without any lvc attached could power it. Something like your older, pretty wore out lead. I considered that myself. But then I thought that I could run electronic and lvc protect at same time. If I had stored solar electronics run from ...
by unklegrumpknee
Jun 02 2020 5:12am
Forum: Battery Technology
Topic: Lipo hybrid systems
Replies: 10
Views: 283

Re: Lipo hybrid systems

A Davys battery is a copper copper sulfate zinc zinc sulfate battery that was used to power the telegraph. Been around a long time. I don't want to turn off the lithium battery when it reaches LVD. I want to be able to power some very low draw equipment at all times. Security and temp monitoring. Ju...
by unklegrumpknee
May 31 2020 8:36pm
Forum: Food and Drink
Topic: Photosynthesis of plants has been hacked -
Replies: 3
Views: 299

Re: Photosynthesis of plants has been hacked -

Recent studies have linked glyphosate to celiac disease from wheat consumption, rather than gluten. What is doused with glyphosate to chemically kill it before harvest. But i haven't delved into these research papers far enough since i don't eat that crap, thus not as interested in getting at the t...
by unklegrumpknee
May 29 2020 1:03pm
Forum: Battery Technology
Topic: Lipo hybrid systems
Replies: 10
Views: 283

Re: Lipo hybrid systems

Just like the PV panels, getting enough to do 100% of the power is maybe twice the size of a system doing 80%.
Similar with batteries.
I was hoping to use the Davies's battery to provide low voltage protection. Also to power monitoring and control systems that should always have power.
by unklegrumpknee
May 26 2020 5:27pm
Forum: Battery Technology
Topic: Lipo hybrid systems
Replies: 10
Views: 283

Lipo hybrid systems

Thought experiments on parallel chemistry. One idea is to use a primary battery to give the lipo low voltage protection. I've thought of a Davies's battery. 1.1 volt constant. 4 would be 4.4 volts. A high amp diode about .75 volts. So it would "kick in" at 3.65 volts, no? I would like to use this on...
by unklegrumpknee
Apr 07 2020 8:25am
Forum: Items for Sale - Used
Topic: FREE - 24, Well Used, 60AH GBS Cells - SOLD
Replies: 2
Views: 1262

Re: FREE - 24, Well Used, 60AH GBS Cells

Just north of Pittsburgh.
I could use some batteries for off grid camp.
My lead died . And I would like to do lithium.
by unklegrumpknee
Apr 03 2019 8:55pm
Forum: Alternative Energy
Topic: Energy storage
Replies: 15
Views: 2321

Re: Energy storage

The latent heat of water is 144 BTU/lb
1 degree F raise in temp requires 1 BTU
A lot of the PCM'S are about half.
So that one pound melting is equal in storage to 72 lbs of water changing one degree,
by unklegrumpknee
Apr 03 2019 8:43pm
Forum: Alternative Energy
Topic: Energy storage
Replies: 15
Views: 2321

Re: Energy storage

Exactly Amberwolf thermal mass. Constant temperature thermal mass. Which is even better.
by unklegrumpknee
Apr 03 2019 5:52am
Forum: Alternative Energy
Topic: Energy storage
Replies: 15
Views: 2321

Re: Energy storage

B. Said Not for A/C systems. They need a more significant temperature difference for effective cooling. It is not being used for cooling, it is used to store the cold. Like industrial freezer packs The greater the temperature difference between your storage (thermal mass) and the useage temperature,...
by unklegrumpknee
Apr 02 2019 7:35pm
Forum: Alternative Energy
Topic: Energy storage
Replies: 15
Views: 2321

Re: Energy storage

B. Said Not for A/C systems. They need a more significant temperature difference for effective cooling. It is not being used for cooling, it is used to store the cold. Like industrial freezer packs The greater the temperature difference between your storage (thermal mass) and the useage temperature,...
by unklegrumpknee
Mar 15 2019 12:42pm
Forum: Alternative Energy
Topic: Energy storage
Replies: 15
Views: 2321

Re: Energy storage

Thanks Bill What they offer is not new technology. The use of ice has been practiced for a long time. That's where the term ton of air conditioning started. A ton of ice a day. A very dense storage system. But think, doesn't it make more sense to store the energy at a temp closest to it's use. No ad...
by unklegrumpknee
Mar 14 2019 8:29am
Forum: Alternative Energy
Topic: Energy storage
Replies: 15
Views: 2321

Energy storage

It doesn't have to be a battery!!!! Phase change material. Better yet Bio PCM. Look at phasechange.com Using this system one can use off peak power for air conditioning at a time when the outside temperature is less getting more " Cold for the buck" Virtually unlimited cycle life. The company has in...
by unklegrumpknee
Feb 16 2019 7:09pm
Forum: Alternative Energy
Topic: Help converting an RV house battery to lithium
Replies: 11
Views: 2545

Re: Help converting an RV house battery to lithium

Has anyone considered using 3s lithium with a large diode and charged separately. Connected to a lead acid battery?
Under a large load the lithium could support the sla reducing the Peukert effect?
by unklegrumpknee
Feb 16 2019 9:38am
Forum: Items for Sale - Used
Topic: Chevy Volt individual Cells FOR SALE. 10C 15Ah
Replies: 59
Views: 7136

Re: Chevy Volt individual Cells FOR SALE. 10C 15Ah

Just wondering. If you test a 3p cluster as a single battery and it acts like it is three times the capacity of the single cell, wouldn't that mean all cells are okay?

I am interested in some for both my ebike and more importantly an off grid camp.

Thanks
by unklegrumpknee
Feb 15 2019 4:01pm
Forum: Alternative Energy
Topic: Help converting an RV house battery to lithium
Replies: 11
Views: 2545

Re: Help converting an RV house battery to lithium

Thanks for the info. I am also wanting to upgrade my Pv system in a little camp. This is good info.
by unklegrumpknee
Aug 12 2018 10:52am
Forum: Alternative Energy
Topic: solar battery advice needed.
Replies: 28
Views: 3995

Re: solar battery advice needed.

jimmy

brilliant idea about upping mining.
Or diversify on a third computer.
by unklegrumpknee
Aug 11 2018 9:28pm
Forum: Battery Technology
Topic: SLA Maintenance - Science vs BS?
Replies: 14
Views: 842

Re: SLA Maintenance - Science vs BS?

they are ten years old and were even run quite dry. Never equalized. I'm running on a wheelchair battery now used when I got it. Either you maintain them or not only kinda extends capacity life and not Chronological life. I chose to go with a high capacity and milk them down. Maybe I should just go ...
by unklegrumpknee
Aug 10 2018 7:19am
Forum: Battery Technology
Topic: SLA Maintenance - Science vs BS?
Replies: 14
Views: 842

Re: SLA Maintenance - Science vs BS?

I used the" get a really big battery and small solar cell and just use them up" method. Lasted 8 years. 4 trojan T-105's and a 60 watt solar cell through a 20 amp controller. I would really appreciate any info on lithium replacement. Need 200 amp peak C to power purchased used 1000w full sine wave i...
by unklegrumpknee
Aug 03 2018 8:57am
Forum: E-Bike General Discussion
Topic: What do you all think about Croudfunding?
Replies: 7
Views: 816

Re: What do you all think about Croudfunding?

Just a thought rattling in this old head. What if you tried a design for a driver and 1 or2 passenger transporter. If it could be kept under 100 pounds it would be legal in a lot of this country. 750 Watt motor. Is it possible? A good market maybe exists for this. Fair goers, nursing home transporta...
by unklegrumpknee
Jul 25 2018 4:59am
Forum: Alternative Energy
Topic: increase static solar panel efficiency/output?
Replies: 16
Views: 2341

Re: increase static solar panel efficiency/output?

Out of the box.

Might you possibly invest time money and effort in more energy efficient appliances?
Reducing consumption is equivalent, no slightly above I feel, to augmenting generation.
by unklegrumpknee
Jul 25 2018 4:47am
Forum: Large EV General Discussion
Topic: Existing build and want to change battery chemistry
Replies: 3
Views: 1427

Re: Existing build and want to change battery chemistry

Excellent project. A couple reasons come to mind. Because of the Puekert sp effect, you can expect longer range from the exact same kilowatt hr of capacity if the weight were the same. It be much lighter extending the range even further. You should have enough room, that you can get even more capaci...
by unklegrumpknee
May 16 2018 7:11am
Forum: Alternative Energy
Topic: 6960 watts going down the road
Replies: 7
Views: 2107

Re: 6960 watts going down the road

Ben Franklin is credited with saying "a penny saved is a penny earned". No longer true. A penny saved is about 2 pennies earned!!! Income taxes, cost to earn money and all sorts of other things get you that second penny. And in your case maybe even a nickel. Congrats and thanks for sharing.h