Solar Cement: Difference between revisions
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*Solar array can produce 860 kG of cement per day. That is 43kg. 20 sacks of portland cement per day. That is $10 per bag - or $200/day | *Solar array can produce 860 kG of cement per day. That is 43kg. 20 sacks of portland cement per day. That is $10 per bag - or $200/day | ||
*The value of electricity only is $120 - so that is value added electricity right there. | *The value of electricity only is $120 - so that is value added electricity right there. | ||
*With 200kW at $100k installed - that is 500 days to payback time. | |||
Revision as of 19:42, 19 December 2018
- Cement takes 5 MJ/kg - [1]
- A 200kW panel produces 4300 MJ per day. [2]
- (1 kHwr = 3.6 MJ)
- Solar array can produce 860 kG of cement per day. That is 43kg. 20 sacks of portland cement per day. That is $10 per bag - or $200/day
- The value of electricity only is $120 - so that is value added electricity right there.
- With 200kW at $100k installed - that is 500 days to payback time.