Concrete Energy Storage Calculations - Revision history

Marcin: /* Conclusion */

2018-10-12T01:55:17Z

Conclusion

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	=Conclusion=		=Conclusion=
	*Regeneratively grown biomass turned to charcoal is 3kWhr/gallon - so $1/kWhr of useful energy		*Regeneratively grown biomass turned to charcoal is 3kWhr/gallon - so $1/kWhr of useful energy. That is the easiest carbon-neutral storage option, followed by [[Saturated Water]] and [[Hydrogen Storage]].

Marcin at 01:53, 12 October 2018

2018-10-12T01:53:42Z

← Older revision		Revision as of 01:53, 12 October 2018
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	One 2.5 ton weight raised 30 meters - takes MGH=250010*30=750,000 joules=750k watt-seconds		One 2.5 ton weight raised 30 meters - takes MGH=250010*30=750,000 joules=750k watt-seconds
	*750kWs=20 kW minutes = 0.3 kWhr. 3 weights of a cubic meter give 1 kWhr. But at $300 concrete cost off the shelf. So mix your own concrete - and do 1/5 the cost for concrete. 1kWhr for $60 in concrete cost - simple DIY if $10 bag of 100 lb cement - $20 makes 1 ton of concrete if no aggregate cost. Absolute minimum - $50/weight if aggregate is free - just cement cost.		*750kWs=20 kW minutes = 0.3 kWhr. 3 weights of a cubic meter give 1 kWhr. But at $300 concrete cost off the shelf. So mix your own concrete - and do 1/5 the cost for concrete. 1kWhr for $60 in concrete cost - simple DIY if $10 bag of 100 lb cement - $20 makes 1 ton of concrete if no aggregate cost. Absolute minimum - $50/weight if aggregate is free - just cement cost.
	*'''Not bad'''.		*'''Not bad'''. But concrete cost itself is $150/kWhr - which kills it right there. Aim for $30/kWhr by lower cost cement mix in bulk.
	Take 30 such blocks - about 30 meters tall - one column - and energy in there is 3025001015 - with 15 average height raise.		Take 30 such blocks - about 30 meters tall - one column - and energy in there is 3025001015 - with 15 average height raise.
	*That is 4.5 kWhr		*That is 4.5 kWhr

Marcin: /* Bulk Cement */

2018-10-12T01:46:40Z

Bulk Cement

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	*1000 kg for $75 vs $10 for 50 kg - 1/3 the cost. So go from $50 to $17/ cubic meter weight		*1000 kg for $75 vs $10 for 50 kg - 1/3 the cost. So go from $50 to $17/ cubic meter weight
	*100' height - 30 meters - 100 of these weights - cost - $1700. Then recycled steel beams - 33kWhr storage. At $1700 concrete, and $1700 for tower - $100/kwhr		*100' height - 30 meters - 100 of these weights - cost - $1700. Then recycled steel beams - 33kWhr storage. At $1700 concrete, and $1700 for tower - $100/kwhr

			=Conclusion=
			*Regeneratively grown biomass turned to charcoal is 3kWhr/gallon - so $1/kWhr of useful energy

Marcin at 01:43, 12 October 2018

2018-10-12T01:43:10Z

← Older revision		Revision as of 01:43, 12 October 2018
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	*Take 2.5 ton weights - about a cubic meter		*Take 2.5 ton weights - about a cubic meter
	One 2.5 ton weight raised 30 meters - takes MGH=250010*30=750,000 joules=750k watt-seconds		One 2.5 ton weight raised 30 meters - takes MGH=250010*30=750,000 joules=750k watt-seconds
	*750kWs=20 kW minutes = 0.3 kWhr		*750kWs=20 kW minutes = 0.3 kWhr. 3 weights of a cubic meter give 1 kWhr. But at $300 concrete cost off the shelf. So mix your own concrete - and do 1/5 the cost for concrete. 1kWhr for $60 in concrete cost - simple DIY if $10 bag of 100 lb cement - $20 makes 1 ton of concrete if no aggregate cost. Absolute minimum - $50/weight if aggregate is free - just cement cost.
	*'''Not bad'''.		*'''Not bad'''.
	Take 30 such blocks - about 30 meters tall - one column - and energy in there is 3025001015 - with 15 average height raise.		Take 30 such blocks - about 30 meters tall - one column - and energy in there is 3025001015 - with 15 average height raise.
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	*$20k cost total		*$20k cost total
	100 blocks 2500105=12.5 MJ = 3.5 kWhr * 80% efficiency = 2.8Kwhr		100 blocks 2500105=12.5 MJ = 3.5 kWhr * 80% efficiency = 2.8Kwhr
	*2.8kWhr for $20k? Doesn't make sense.		*2.8kWhr for $20k? 10 meter tall Doesn't make sense.
			*But 120' = 10kWhr - is better.
	*Check out this crane for 140' tall, 30 ton capacity - $25k - [https://cranenetwork.com/crane/truck-mounted-lattice-boom-cranes/p-h/430-tc/139417]		*Check out this crane for 140' tall, 30 ton capacity - $25k - [https://cranenetwork.com/crane/truck-mounted-lattice-boom-cranes/p-h/430-tc/139417]
			*Basic cost -
			=Bulk Cement=
			*$75/ton - [https://www.alibaba.com/product-detail/High-quality-best-factory-direct-cement_60751912342.html?spm=a2700.7724857.normalList.14.674c45d4QOxbhq&s=p] min order of 100 tons
			*1000 kg for $75 vs $10 for 50 kg - 1/3 the cost. So go from $50 to $17/ cubic meter weight
			*100' height - 30 meters - 100 of these weights - cost - $1700. Then recycled steel beams - 33kWhr storage. At $1700 concrete, and $1700 for tower - $100/kwhr

Marcin at 01:22, 12 October 2018

2018-10-12T01:22:49Z

← Older revision		Revision as of 01:22, 12 October 2018
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	100 blocks 2500105=12.5 MJ = 3.5 kWhr * 80% efficiency = 2.8Kwhr		100 blocks 2500105=12.5 MJ = 3.5 kWhr * 80% efficiency = 2.8Kwhr
	*2.8kWhr for $20k? Doesn't make sense.		*2.8kWhr for $20k? Doesn't make sense.
	*Check out this crane for 140' -$25k- [https://cranenetwork.com/crane/truck-mounted-lattice-boom-cranes/p-h/430-tc/139417]		*Check out this crane for 140' tall, 30 ton capacity - $25k - [https://cranenetwork.com/crane/truck-mounted-lattice-boom-cranes/p-h/430-tc/139417]

Marcin at 01:21, 12 October 2018

2018-10-12T01:21:22Z

← Older revision		Revision as of 01:21, 12 October 2018
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	*For much smaller scale - say 10 meters tall and blocks of 2 tons - take 100 blocks -		*For much smaller scale - say 10 meters tall and blocks of 2 tons - take 100 blocks -
	*$100/cu yd of concrete - bioconcrete or burned limestone could be a trick here.		*$100/cu yd of concrete - bioconcrete or burned limestone could be a trick here.
	*		*Take 100 yards of concrete mix - $10,000
			*Tower - $10k in materials
			*$20k cost total
			100 blocks 2500105=12.5 MJ = 3.5 kWhr * 80% efficiency = 2.8Kwhr
			*2.8kWhr for $20k? Doesn't make sense.
			*Check out this crane for 140' -$25k- [https://cranenetwork.com/crane/truck-mounted-lattice-boom-cranes/p-h/430-tc/139417]

Marcin at 01:13, 12 October 2018

2018-10-12T01:13:57Z

← Older revision		Revision as of 01:13, 12 October 2018
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	*1 cubic meter of concrete weighs 2400 kg		*1 cubic meter of concrete weighs 2400 kg
	*MGH - energy if taken up to 100 meters with a crane		*MGH - energy if taken up to 100 meters with a crane
	*Common cranes are 80m max and 20ton capacity		*Common cranes are 80m max and 20ton capacity - [https://science.howstuffworks.com/transport/engines-equipment/tower-crane2.htm]
	*Take 30 meters tall and 2.5 ton capacity (practical village scale). Can double up as an observatory or sky diner on top.		*Take 30 meters tall and 2.5 ton capacity (practical village scale). Can double up as an observatory or sky diner on top.
	*Take 2.5 ton weights - about a cubic meter		*Take 2.5 ton weights - about a cubic meter
	*One 2.5 ton weight raised -		One 2.5 ton weight raised 30 meters - takes MGH=250010*30=750,000 joules=750k watt-seconds
			*750kWs=20 kW minutes = 0.3 kWhr
			*'''Not bad'''.
			Take 30 such blocks - about 30 meters tall - one column - and energy in there is 3025001015 - with 15 average height raise.
			*That is 4.5 kWhr
			*To make this practical - would need many such towers. Geometry, stabilization, handling are the keys - how to achieve a sound design?
			*In principle sounds like a great idea, if the automation and CV AI can help
			*For much smaller scale - say 10 meters tall and blocks of 2 tons - take 100 blocks -
			*$100/cu yd of concrete - bioconcrete or burned limestone could be a trick here.
			*

Marcin: Created page with "1 cubic meter of concrete weighs 2400 kg MGH - energy if taken up to 100 meters with a crane Common cranes are 80m max and 20ton capacity Take 30 meters tall and 2.5 ton c..."

2018-10-12T01:00:35Z

Created page with "*1 cubic meter of concrete weighs 2400 kg *MGH - energy if taken up to 100 meters with a crane *Common cranes are 80m max and 20ton capacity *Take 30 meters tall and 2.5 ton c..."

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*1 cubic meter of concrete weighs 2400 kg
*MGH - energy if taken up to 100 meters with a crane
*Common cranes are 80m max and 20ton capacity
*Take 30 meters tall and 2.5 ton capacity (practical village scale). Can double up as an observatory or sky diner on top.
*Take 2.5 ton weights - about a cubic meter
*One 2.5 ton weight raised -