Cement Energy Calculations - Revision history

Eric: Added a Category to the Page

2022-09-06T04:46:35Z

Added a Category to the Page

← Older revision		Revision as of 04:46, 6 September 2022
Line 14:		Line 14:
	:*Phase II realistic - 5 tons per day.		:*Phase II realistic - 5 tons per day.
	*If 200kW gives us 1.2MWhr/day - that is 1200 kW hrs - or about $120 per day. If turned to cement, that would be 10x the value.		*If 200kW gives us 1.2MWhr/day - that is 1200 kW hrs - or about $120 per day. If turned to cement, that would be 10x the value.

			[[Category: Solar Cement]]

Marcin: /* Notes */

2019-03-21T17:01:17Z

Notes

← Older revision		Revision as of 17:01, 21 March 2019
Line 13:		Line 13:
	:*Phase I realistic - 3 tons per day		:*Phase I realistic - 3 tons per day
	:*Phase II realistic - 5 tons per day.		:*Phase II realistic - 5 tons per day.
			*If 200kW gives us 1.2MWhr/day - that is 1200 kW hrs - or about $120 per day. If turned to cement, that would be 10x the value.

Marcin: /* Notes */

2019-03-21T16:57:36Z

Notes

← Older revision		Revision as of 16:57, 21 March 2019
Line 10:		Line 10:
	*By electric, see below, 5x improved efficiency for 5 tons per day from 200kWhr PV array? That’s a sizeable array - perhaps 100kW is more reasonable. If .15 kW/sq m, need only 700 sq meters - only ⅙ of an acre. The next building should be ½ acre for the materials production facility. If we do small scale production - 100kW heat - 2.5 tons per day. That’s 25 tons of stabilized block. 3200lb per 4x8 wall section. That is 60 feet of wall - just a microhouse. That would be absolute minimum.		*By electric, see below, 5x improved efficiency for 5 tons per day from 200kWhr PV array? That’s a sizeable array - perhaps 100kW is more reasonable. If .15 kW/sq m, need only 700 sq meters - only ⅙ of an acre. The next building should be ½ acre for the materials production facility. If we do small scale production - 100kW heat - 2.5 tons per day. That’s 25 tons of stabilized block. 3200lb per 4x8 wall section. That is 60 feet of wall - just a microhouse. That would be absolute minimum.
	25 ton per day setup is open source in Small Scale Cement Plants. 20 bags per ton. 8 pallets per day - or 500 bags $10/bag. $5000/day. Doable. That is a typical industrial value that needs to be produced per day.		25 ton per day setup is open source in Small Scale Cement Plants. 20 bags per ton. 8 pallets per day - or 500 bags $10/bag. $5000/day. Doable. That is a typical industrial value that needs to be produced per day.
	*Electric - 800 kcal/kg for calcination - CaCO3 + Heat ->CaO + CO2. or 3 MJ/kg - or .8kWhr/kg. If we can transfer heat with 50% efficiency - then we have 10/2 = 5x increase over burning with charcoal. In general, electricity is cleaner and more efficient. So theoretical limit of 200kW PV array is 5 tons per day.		*Electric - 800 kcal/kg for calcination - CaCO3 + Heat ->CaO + CO2. or 3 MJ/kg - or .8kWhr/kg. If we can transfer heat with 50% efficiency - then we have 10/2 = 5x increase over burning with charcoal. In general, electricity is cleaner and more efficient. So '''theoretical limit of 200kW PV array is 5 tons per day.'''
	:*Phase I realistic - 3 tons per day		:*Phase I realistic - 3 tons per day
	:*Phase II realistic - 5 tons per day.		:*Phase II realistic - 5 tons per day.

Marcin: /* Notes */

2019-03-10T19:36:04Z

Notes

← Older revision		Revision as of 19:36, 10 March 2019
Line 11:		Line 11:
	25 ton per day setup is open source in Small Scale Cement Plants. 20 bags per ton. 8 pallets per day - or 500 bags $10/bag. $5000/day. Doable. That is a typical industrial value that needs to be produced per day.		25 ton per day setup is open source in Small Scale Cement Plants. 20 bags per ton. 8 pallets per day - or 500 bags $10/bag. $5000/day. Doable. That is a typical industrial value that needs to be produced per day.
	*Electric - 800 kcal/kg for calcination - CaCO3 + Heat ->CaO + CO2. or 3 MJ/kg - or .8kWhr/kg. If we can transfer heat with 50% efficiency - then we have 10/2 = 5x increase over burning with charcoal. In general, electricity is cleaner and more efficient. So theoretical limit of 200kW PV array is 5 tons per day.		*Electric - 800 kcal/kg for calcination - CaCO3 + Heat ->CaO + CO2. or 3 MJ/kg - or .8kWhr/kg. If we can transfer heat with 50% efficiency - then we have 10/2 = 5x increase over burning with charcoal. In general, electricity is cleaner and more efficient. So theoretical limit of 200kW PV array is 5 tons per day.
			:*Phase I realistic - 3 tons per day
			:*Phase II realistic - 5 tons per day.

Marcin at 19:35, 10 March 2019

2019-03-10T19:35:12Z

← Older revision		Revision as of 19:35, 10 March 2019
Line 1:		Line 1:
	=Summary=		=Summary=
	A 10,000 square foot microfactory with a 200kW rooftop solar panel system can produce 1 ton of solar cement from limestone feedstock, neutralizing CO2 impact of cement production. Payback time for PV panel costs is 350 days if a sack of cement (100lb) is sold for $10. A solar electric kiln the size of chest freezer is required. PV is a choice here due to its flexible function and current low cost of PV at [[Sunelec]].		A 10,000 square foot microfactory with a 200kW rooftop solar panel system can produce 1 ton of solar cement per day from limestone feedstock, neutralizing CO2 impact of cement production. Payback time for PV panel costs is 350 days if a sack of cement (100lb) is sold for $10. A solar electric kiln the size of chest freezer is required. PV is a choice here due to its flexible function and current low cost of PV at [[Sunelec]].

	=Notes=		=Notes=
	Solar gain- 4MW/acre. 20% conversion - 800kW/acre.		Solar gain- 4MW/acre. 20% conversion - 800kW/acre.

	Cement - 20-55 kWhr/ton ~~- but that is~~ just electricity for motion. https://www.scribd.com/doc/19070918/Small-Scale-Production-of-Portland-Cement https://link.springer.com/chapter/10.1007/978-1-59745-173-4_14 electricity + 1040 kcal/kg heat (1.2kWhr/kg) of clinker. Or 1.2MWhr/ton - . Think of 200kW PV array - gets us the 1.2MWhr/day, or 1 ton per day - $200 worth of cement. $70k. 350 days payback if 1 Ton/day production!!! If use coal, 30MJ/kg - 8 kWhr - or 150 kg of charcoal per ton of cement. World’s first solar cement plant - eco-cement, carbon neutral. By electric, see below, 5x improved efficiency for 5 tons per day from 200kWhr PV array? That’s a sizeable array - perhaps 100kW is more reasonable. If .15 kW/sq m, need only 700 sq meters - only ⅙ of an acre. The next building should be ½ acre for the materials production facility. If we do small scale production - 100kW heat - 2.5 tons per day. That’s 25 tons of stabilized block. 3200lb per 4x8 wall section. That is 60 feet of wall - just a microhouse. That would be absolute minimum.		*Cement - 20-55 kWhr/ton just electricity for motion. https://www.scribd.com/doc/19070918/Small-Scale-Production-of-Portland-Cement https://link.springer.com/chapter/10.1007/978-1-59745-173-4_14 electricity
	25 ton per day setup is open source in Small Scale Cement Plants. 20 bags per ton. 8 pallets per day - or 500 bags * $10/bag. $5000/day. Doable. That is a typical industrial value that needs to be produced per day.		*+ 1040 kcal/kg heat (1.2kWhr/kg) of clinker. Or 1.2MWhr/ton - .
	Electric - 800 kcal/kg for calcination - CaCO3 + Heat ->CaO + CO2. or 3 MJ/kg - or .8kWhr/kg. If we can transfer heat with 50% efficiency - then we have 10/2 = 5x increase over burning with charcoal. In general, electricity is cleaner. So theoretical limit of 200kW PV array is 5 tons per day.		*Think of 200kW PV array - gets us the 1.2MWhr/day, or 1 ton per day - $200 worth of cement. $70k. 350 days payback if 1 Ton/day production!!! If use coal, 30MJ/kg - 8 kWhr - or 150 kg of charcoal per ton of cement. World’s first solar cement plant - eco-cement, carbon neutral.
			*By electric, see below, 5x improved efficiency for 5 tons per day from 200kWhr PV array? That’s a sizeable array - perhaps 100kW is more reasonable. If .15 kW/sq m, need only 700 sq meters - only ⅙ of an acre. The next building should be ½ acre for the materials production facility. If we do small scale production - 100kW heat - 2.5 tons per day. That’s 25 tons of stabilized block. 3200lb per 4x8 wall section. That is 60 feet of wall - just a microhouse. That would be absolute minimum.
			25 ton per day setup is open source in Small Scale Cement Plants. 20 bags per ton. 8 pallets per day - or 500 bags $10/bag. $5000/day. Doable. That is a typical industrial value that needs to be produced per day.
			*Electric - 800 kcal/kg for calcination - CaCO3 + Heat ->CaO + CO2. or 3 MJ/kg - or .8kWhr/kg. If we can transfer heat with 50% efficiency - then we have 10/2 = 5x increase over burning with charcoal. In general, electricity is cleaner and more efficient. So theoretical limit of 200kW PV array is 5 tons per day.

Marcin: /* Summary */

2018-01-18T20:45:33Z

Summary

← Older revision		Revision as of 20:45, 18 January 2018
Line 1:		Line 1:
	=Summary=		=Summary=
	A 10,000 square foot microfactory with a 200kW rooftop solar panel system can produce 1 ton of solar cement from limestone feedstock, neutralizing CO2 impact of cement production. Payback time for PV panel costs is 350 days if a sack of cement (100lb) is sold for $10.		A 10,000 square foot microfactory with a 200kW rooftop solar panel system can produce 1 ton of solar cement from limestone feedstock, neutralizing CO2 impact of cement production. Payback time for PV panel costs is 350 days if a sack of cement (100lb) is sold for $10. A solar electric kiln the size of chest freezer is required. PV is a choice here due to its flexible function and current low cost of PV at [[Sunelec]].

	=Notes=		=Notes=

Marcin: Created page with "=Summary= A 10,000 square foot microfactory with a 200kW rooftop solar panel system can produce 1 ton of solar cement from limestone feedstock, neutralizing CO2 impact of ceme..."

2018-01-18T20:41:12Z

Created page with "=Summary= A 10,000 square foot microfactory with a 200kW rooftop solar panel system can produce 1 ton of solar cement from limestone feedstock, neutralizing CO2 impact of ceme..."

New page

=Summary=
A 10,000 square foot microfactory with a 200kW rooftop solar panel system can produce 1 ton of solar cement from limestone feedstock, neutralizing CO2 impact of cement production. Payback time for PV panel costs is 350 days if a sack of cement (100lb) is sold for $10.

=Notes=
Solar gain- 4MW/acre. 20% conversion - 800kW/acre.

Cement - 20-55 kWhr/ton - but that is just electricity for motion. https://www.scribd.com/doc/19070918/Small-Scale-Production-of-Portland-Cement https://link.springer.com/chapter/10.1007/978-1-59745-173-4_14 electricity + 1040 kcal/kg heat (1.2kWhr/kg) of clinker. Or 1.2MWhr/ton - . Think of 200kW PV array - gets us the 1.2MWhr/day, or 1 ton per day - $200 worth of cement. $70k. 350 days payback if 1 Ton/day production!!! If use coal, 30MJ/kg - 8 kWhr - or 150 kg of charcoal per ton of cement. World’s first solar cement plant - eco-cement, carbon neutral. By electric, see below, 5x improved efficiency for 5 tons per day from 200kWhr PV array? That’s a sizeable array - perhaps 100kW is more reasonable. If .15 kW/sq m, need only 700 sq meters - only ⅙ of an acre. The next building should be ½ acre for the materials production facility. If we do small scale production - 100kW heat - 2.5 tons per day. That’s 25 tons of stabilized block. 3200lb per 4x8 wall section. That is 60 feet of wall - just a microhouse. That would be absolute minimum.
25 ton per day setup is open source in Small Scale Cement Plants. 20 bags per ton. 8 pallets per day - or 500 bags * $10/bag. $5000/day. Doable. That is a typical industrial value that needs to be produced per day.
Electric - 800 kcal/kg for calcination - CaCO3 + Heat ->CaO + CO2. or 3 MJ/kg - or .8kWhr/kg. If we can transfer heat with 50% efficiency - then we have 10/2 = 5x increase over burning with charcoal. In general, electricity is cleaner. So theoretical limit of 200kW PV array is 5 tons per day.