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Search: Posts Made By: NiHaoMike
Forum: Geothermal & Heat Pumps 07-30-20, 07:02 PM
Replies: 21
Views: 22,201
Posted By NiHaoMike
2 tons of refrigeration operating for one hour...

2 tons of refrigeration operating for one hour will only make 183 pounds of ice, or about 23 gallons.

What is the end goal now? Are we building an EV that regularly gets driven (in which case...
Forum: Geothermal & Heat Pumps 07-20-20, 08:16 PM
Replies: 21
Views: 22,201
Posted By NiHaoMike
Tons per 24 hours, and only for the short time it...

Tons per 24 hours, and only for the short time it takes to cool down. As mentioned, 1 ton is plenty for a fairly large RV.
Forum: Geothermal & Heat Pumps 07-14-20, 10:50 PM
Replies: 21
Views: 22,201
Posted By NiHaoMike
For the batteries, a mere 4-5x per pound compared...

For the batteries, a mere 4-5x per pound compared to ice which actually gets reduced to about 2.5x after derating the batteries. Doesn't seem like a huge improvement compared to the cost. On the...
Forum: Geothermal & Heat Pumps 07-06-20, 09:17 PM
Replies: 21
Views: 22,201
Posted By NiHaoMike
It takes energy to move batteries as well,...

It takes energy to move batteries as well, although I suppose that can be largely offset with regenerative braking. It's down to the overall cost vs benefit of a large battery pack vs a smaller...
Forum: Geothermal & Heat Pumps 07-06-20, 07:54 AM
Replies: 21
Views: 22,201
Posted By NiHaoMike
The thermal storage can be "recharged" with an...

The thermal storage can be "recharged" with an onboard heat pump. Most likely one based on a 5000BTU/hr window A/C since it's hard to go smaller with decent efficiency and still keep the cost of...
Forum: Geothermal & Heat Pumps 07-04-20, 01:10 PM
Replies: 21
Views: 22,201
Posted By NiHaoMike
1kg of ice will absorb 333kJ of energy. 1kg of...

1kg of ice will absorb 333kJ of energy. 1kg of the best lithium batteries will store on the order of 800kJ of energy, but cheaper ones will store considerably less. Then there's the efficiency of the...
Forum: Geothermal & Heat Pumps 07-01-20, 07:57 PM
Replies: 21
Views: 22,201
Posted By NiHaoMike
Don't bother, ice storage ends up with a very...

Don't bother, ice storage ends up with a very similar amount of cooling per pound of energy storage medium. Unless you're converting it to a plug in hybrid, that is...
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