Solar Concrete - Revision history

Marcin at 21:44, 19 October 2025

2025-10-19T21:44:14Z

← Older revision		Revision as of 21:44, 19 October 2025
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	{{Hint\|Lime requires about 1kWhr/kg to produce from rocks.}}		{{Hint\|Lime requires about 1kWhr/kg to produce from rocks.}}

			=TLDR;=

			'''Solar concrete is burned lime and agregate as in the standard cement production. The difference is that instead of using fossil fuels to provide process heat, we use photovoltaics and electric heaters to reduce the fuel cost to zero marginal cost based on the current 7-15 cent per watt cost of photovoltaic panels.'''

	=Working Doc=		=Working Doc=
	<html><iframe src="https://docs.google.com/presentation/d/e/2PACX-1vQcU_Vn0hnsAsvMKClakWDRjywSwXPl7KxVcClb_4oeaup4DkbJ0pah5HXcLKq33JMFSQ_k_FmC5Y6r/embed?start=false&loop=false&delayms=3000" frameborder="0" width="480" height="389" allowfullscreen="true" mozallowfullscreen="true" webkitallowfullscreen="true"></iframe></html>		<html><iframe src="https://docs.google.com/presentation/d/e/2PACX-1vQcU_Vn0hnsAsvMKClakWDRjywSwXPl7KxVcClb_4oeaup4DkbJ0pah5HXcLKq33JMFSQ_k_FmC5Y6r/embed?start=false&loop=false&delayms=3000" frameborder="0" width="480" height="389" allowfullscreen="true" mozallowfullscreen="true" webkitallowfullscreen="true"></iframe></html>

Marcin: /* Links */

2024-09-23T04:51:14Z

Links

← Older revision		Revision as of 04:51, 23 September 2024
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	=Links=		=Links=
			*[[Land_Area_Required_for_PV_Energy]]
	*[[Solar Steel]]		*[[Solar Steel]]
	*[[Lime Concrete]]		*[[Lime Concrete]]

Marcin: /* Links */

2024-07-22T03:01:40Z

Links

← Older revision		Revision as of 03:01, 22 July 2024
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	=Links=		=Links=
			*[[Solar Steel]]
	*[[Lime Concrete]]		*[[Lime Concrete]]
	*[[Concrete]]		*[[Concrete]]

Eric: Added a Category to the Page

2024-02-12T01:13:40Z

Added a Category to the Page

← Older revision		Revision as of 01:13, 12 February 2024
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	*[[Concrete]]		*[[Concrete]]
	*[[Rotary Kiln]].		*[[Rotary Kiln]].

			[[Category: Solar Concrete]] [[Category: Concrete]]

Marcin: /* 50kW Array - Produces 24 CEB Homes per Year Or a Million Dollar Net Revenue Home Building Business */

2023-12-21T16:37:30Z

50kW Array - Produces 24 CEB Homes per Year Or a Million Dollar Net Revenue Home Building Business

← Older revision		Revision as of 16:37, 21 December 2023
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	=50kW Array - Produces 24 CEB Homes per Year Or a Million Dollar Net Revenue Home Building Business=		=50kW Array - Produces 24 CEB Homes per Year Or a Million Dollar Net Revenue Home Building Business=

	{{Hint\|'''At the 50kW scale of photovoltaic power, we are able to make one cubic yard of cement per day}}		{{Hint\|'''At the 50kW scale of photovoltaic power, we are able to make one cubic yard of cement per day - enough for one house per 2 weeks}}
	*For the small/medium microfactory - a load of 50kW for solar cement is reasonable.		*For the small/medium microfactory - a load of 50kW for solar cement is reasonable.
	*This gets to industrial productivity on a small scale - which produces 5 bags, 80lb each, of cement per day. That is $50 value on the commodity market, and yields a 400 day ($20k/$50/day) payback time if we were selling concrete.		*This gets to industrial productivity on a small scale - which produces 5 bags, 80lb each, of cement per day. That is $50 value on the commodity market, and yields a 400 day ($20k/$50/day) payback time if we were selling concrete.

Marcin: /* 50kW Array - Produces 24 CEB Homes per Year Or a Million Dollar Net Revenue Home Building Business */

2023-12-21T16:36:34Z

50kW Array - Produces 24 CEB Homes per Year Or a Million Dollar Net Revenue Home Building Business

← Older revision		Revision as of 16:36, 21 December 2023
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	*This is only about 400 CEB block - we need more than this. For 5000 block per day - it would take us 12 days to make the cement for the block. This is where a larger array would make sense.		*This is only about 400 CEB block - we need more than this. For 5000 block per day - it would take us 12 days to make the cement for the block. This is where a larger array would make sense.
	*This is where production on a windy day using wind power would be effective, in an automated plant.		*This is where production on a windy day using wind power would be effective, in an automated plant.
	*At the 60 acre scale, a commercial quarry can be installed, producing $5M of rock (300,000 tons per year)- 1000 tons per day or 50 trucks worth per day. For a [[Microquarry]], we need only for 500 homes per year.		At the 60 acre scale, a commercial quarry can be installed, producing $5M of rock (300,000 tons per year)- 1000 tons per day or 50 trucks worth per day. For a [[Microquarry]], we need only 120 ton500=60,000 tons per year for 500 homes per year - or about 1/5 an industry standard quarry. Add cement - and we may go to about 1/4 of a standard quarry, or about $1M savings on concrete. Once learned, we add the quarry to the [[Open Sector]] for creating worldwide financial independence.

	=200kW Array=		=200kW Array=

Marcin: /* 50kW Array - Produces 24 CEB Homes per Year Or a Million Dollar Net Revenue Home Building Business */

2023-12-21T16:31:12Z

50kW Array - Produces 24 CEB Homes per Year Or a Million Dollar Net Revenue Home Building Business

← Older revision		Revision as of 16:31, 21 December 2023
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	*This is only about 400 CEB block - we need more than this. For 5000 block per day - it would take us 12 days to make the cement for the block. This is where a larger array would make sense.		*This is only about 400 CEB block - we need more than this. For 5000 block per day - it would take us 12 days to make the cement for the block. This is where a larger array would make sense.
	*This is where production on a windy day using wind power would be effective, in an automated plant.		*This is where production on a windy day using wind power would be effective, in an automated plant.
	*At the 60 acre scale, a commercial quarry can be installed, producing $5M of rock (		*At the 60 acre scale, a commercial quarry can be installed, producing $5M of rock (300,000 tons per year)- 1000 tons per day or 50 trucks worth per day. For a [[Microquarry]], we need only for 500 homes per year.

	=200kW Array=		=200kW Array=

Marcin: /* 50kW Array - Produces 24 CEB Homes per Year Or a Million Dollar Net Revenue Home Building Business */

2023-12-21T16:27:27Z

50kW Array - Produces 24 CEB Homes per Year Or a Million Dollar Net Revenue Home Building Business

← Older revision		Revision as of 16:27, 21 December 2023
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	{{Hint\|'''At the 50kW scale of photovoltaic power, we are able to make one cubic yard of cement per day}}		{{Hint\|'''At the 50kW scale of photovoltaic power, we are able to make one cubic yard of cement per day}}
	*For the small/medium microfactory - a load of 50kW for solar cement is reasonable.		*For the small/medium microfactory - a load of 50kW for solar cement is reasonable.
	*This gets to industrial productivity on a small scale - which produces 5 bags, 80lb each, of cement per day. That is $50 value on the commodity market, and yields a 400 day ($20k/$50/day) payback time if we were selling concrete. Value-adding block to that - means we get $400-$800 more for the block at $1-2 ea - making the payback time 50 days if we discount labor.		*This gets to industrial productivity on a small scale - which produces 5 bags, 80lb each, of cement per day. That is $50 value on the commodity market, and yields a 400 day ($20k/$50/day) payback time if we were selling concrete.
			*This could be applied to foundation concrete or for cement stabilized compressed earth bricks
			*Value-adding compressed Earth block to that - means we get $400-$800 more for the block at $1-2 ea - making the payback time 50 days if we discount labor.
	*This is only about 400 CEB block - we need more than this. For 5000 block per day - it would take us 12 days to make the cement for the block. This is where a larger array would make sense.		*This is only about 400 CEB block - we need more than this. For 5000 block per day - it would take us 12 days to make the cement for the block. This is where a larger array would make sense.
	*This is where production on a windy day using wind power would be effective, in an automated plant.		*This is where production on a windy day using wind power would be effective, in an automated plant.
			*At the 60 acre scale, a commercial quarry can be installed, producing $5M of rock (

	=200kW Array=		=200kW Array=

Marcin: /* 10kW Array */

2023-08-15T12:59:38Z

10kW Array

← Older revision		Revision as of 12:59, 15 August 2023
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	*Thus, a 10 kW solar panel array, affordable by any University Solar Concrete Project - pr donated for conscience - has 60kW hrs of energy per day		*Thus, a 10 kW solar panel array, affordable by any University Solar Concrete Project - pr donated for conscience - has 60kW hrs of energy per day
	*Concrete block is only 10-15% cement		*Concrete block is only 10-15% cement
	*1 kWhr gets us .6 kg of cement		*{{check}}1 kWhr gets us .6 kg of cement. This one from China, electric, is up to 2 kg/kWhr, and efficient starting at 70kW. Efficiency of electric may be hire. See [[Electric Rotary Kiln]].
	*Gasoline is 45MJ/kg. 1 kg gasoline gets you about 15 kg of lime cement. Thus, 1 gal of gasoline gets you 35 kg of lime cement (and only 20 kg of portland cement). That is about one gallon of gas per bag of lime cement, and 1/2 a bag of portland cement. Holy cow, there is a lot of gasoline in cement! Take the [[Construction Trailer]] which is solar powered.		*Gasoline is 45MJ/kg. 1 kg gasoline gets you about 15 kg of lime cement. Thus, 1 gal of gasoline gets you 35 kg of lime cement (and only 20 kg of portland cement). That is about one gallon of gas per bag of lime cement, and 1/2 a bag of portland cement. Holy cow, there is a lot of gasoline in cement! Take the [[Construction Trailer]] which is solar powered.
	*'''60 kWhr gets us 36 kg of portland cement or 61 kg of lime cement'''		*'''60 kWhr gets us 36 kg of portland cement or 61 kg of lime cement'''

Marcin: /* Links */

2023-08-15T12:56:33Z

Links

← Older revision		Revision as of 12:56, 15 August 2023
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	*[[Lime Concrete]]		*[[Lime Concrete]]
	*[[Concrete]]		*[[Concrete]]
			*[[Rotary Kiln]].