Point Focus Thermal Systems - Revision history

Eric: Added a Category to the Page

2022-05-10T19:23:30Z

Added a Category to the Page

← Older revision		Revision as of 19:23, 10 May 2022
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	issue.		issue.

	[[Category:Solar_Turbine]]		[[Category: Bio-Petrochemistry]] [[Category: Solar_Turbine]] [[Category: Solar Furnace]] [[Category: Metalworks]]

Offonoffoffonoff: /* Cost Calculations */

2008-12-14T21:30:44Z

Cost Calculations

← Older revision		Revision as of 21:30, 14 December 2008
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	then a few thousand more for two beefy servos, control electronics, gears and cogs and chains. $8,000 for the whole deal.		then a few thousand more for two beefy servos, control electronics, gears and cogs and chains. $8,000 for the whole deal.

	What's a reasonable life time on this thing, (before repair costs start to become expensive)? and then multiply 24 kW by number of years * 200 days/yr * 5 hours/day to get total kW/hr energy of the system. (for 20 years, thats 480,000 kWhr, which is fractions of a penny per kWhr).		What's a reasonable life time on this thing, (before repair costs start to become expensive)? and then multiply 24 kW by number of years * 200 days/yr * 5 hours/day to get total kW/hr energy of the system. (for 20 years, thats 480,000 kWhr, which is fractions of a penny per kWhr). (doug reports a life time of 50 years and counting).

	Now, for electricity ~~production~~, how about regenerating zinc for zinc/air batteries at those prices? Even at 10 percent total efficiency, or 1 percent (considering carnot has nothing to say about this, that seems achievable, with 80% optical ~~efficency~~, 50% crucible ~~efficency~~, losses for thermal mass, 60% battery ~~efficency~~, etc).		Now, for electricity storage, how about regenerating zinc for zinc/air batteries at those prices? Even at 10 percent total efficiency, or 1 percent (considering carnot has nothing to say about this, that seems achievable, with 80% optical efficiency, 50% crucible efficiency, losses for thermal mass, 50% battery efficiency, etc).

	Producing calcium carbide for on demand acetylene would be a way to fortify charcoal (more energy per mol CO2 released) and have an energy dense storage medium for internal combustion engines.		Producing calcium carbide for on demand acetylene would be a way to fortify charcoal (more energy per mol CO2 released) and have an energy dense storage medium for internal combustion engines.

Offonoffoffonoff: /* Cost Calculations */

2008-12-14T21:24:01Z

Cost Calculations

← Older revision		Revision as of 21:24, 14 December 2008
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	I calculate about 122 linear feet of metal rod needed for that lattice structure, with EMT at 1.99 per 10 feet (call it 9 feet to account for curvature) at the local hardware store here, that's 80 bucks. (labor intensive construction indeed, bending the tubing and all that welding...)		I calculate about 122 linear feet of metal rod needed for that lattice structure, with EMT at 1.99 per 10 feet (call it 9 feet to account for curvature) at the local hardware store here, that's 80 bucks. (labor intensive construction indeed, bending the tubing and all that welding...)

	say then that we pay 2 dollars per square foot for mirrors, thats 144 square feet for the system, or 288 dollars for mirrors.		say then that we pay 2 dollars per square foot for mirrors (though doug quotes much less for his project), thats 144 square feet for the system, or 288 dollars for mirrors.

	then a whole mess of steel to support the whole thing (doug's looks like its a steel post driven into the ground, encased in concrete), say 300 lbs of steel I ~~beems~~ ( don't know how reasonable that number is) at scrap yard prices (only way i know to estimate) 2 $/lb = $600. another $200 for cogs and chains		then a whole mess of steel to support the whole thing (doug's looks like its a steel post driven into the ground, encased in concrete), say 300 lbs of steel I beams ( don't know how reasonable that number is) at scrap yard prices (only way i know to estimate) 2 $/lb = $600. another $200 for cogs and chains

	thats $1,200 for 8-9 kw, which is linearly scalable within reason (3 or 4 heliostats in parallel, or more built on an appropriately sloped location or into the side you your new 3 story research facility)		thats $1,200 for 8-9 kw, which is linearly scalable within reason (3 or 4 heliostats in parallel, or more built on an appropriately sloped location or into the side you your new 3 story research facility)
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	so call a 24 Kw get up (within linear scalability, without the need for a tower) $3,600, or $4,000 even.		so call a 24 Kw get up (within linear scalability, without the need for a tower) $3,600, or $4,000 even.

	then a few thousand more for two beefy servos ~~and~~ control electronics. $8,000 for the whole deal.		then a few thousand more for two beefy servos, control electronics, gears and cogs and chains. $8,000 for the whole deal.

	What's a reasonable life time on this thing, (before repair costs start to become expensive)? and then multiply 24 kW by number of years * 200 days/yr * 5 hours/day to get total kW/hr energy of the system. (for 20 years, thats 480,000 kWhr, which is fractions of a penny per kWhr).		What's a reasonable life time on this thing, (before repair costs start to become expensive)? and then multiply 24 kW by number of years * 200 days/yr * 5 hours/day to get total kW/hr energy of the system. (for 20 years, thats 480,000 kWhr, which is fractions of a penny per kWhr).

	Now, for electricity production, how about regenerating zinc for zinc/air batteries at those prices? Even at 10 percent total efficiency, or 1 percent (considering carnot has nothing to say about this, that seems achievable, with 80% optical efficency, 50% crucible efficency, losses for thermal mass, 60% battery efficency, etc)		Now, for electricity production, how about regenerating zinc for zinc/air batteries at those prices? Even at 10 percent total efficiency, or 1 percent (considering carnot has nothing to say about this, that seems achievable, with 80% optical efficency, 50% crucible efficency, losses for thermal mass, 60% battery efficency, etc).

			Producing calcium carbide for on demand acetylene would be a way to fortify charcoal (more energy per mol CO2 released) and have an energy dense storage medium for internal combustion engines.

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	Marcin says:		Marcin says:

Offonoffoffonoff: /* Introduction */

2008-12-14T21:19:28Z

Introduction

← Older revision		Revision as of 21:19, 14 December 2008
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	=Introduction=		=Introduction=

	Elliot Hallmark ~~provided~~ an interesting cost analysis for solar ~~thermal recharging~~ of zinc-air batteries~~. The hope is that~~ a ~~highly ecological electrical~~ energy ~~option may be available via this route~~.		Elliot Hallmark provids an interesting cost analysis for a small to medium scale solar furnace which would allow for the regeneration of zinc for energy storage in zinc/air batteries, for the production of calcium carbide and acetylene from locally produced charcoal, and for a wide variety of energy intensive manufacturing processes (working with metal carbides for tools and crucibles, sapphire for optics in high temperatures and pressures, et cetera).

	=Cost Calculations=		=Cost Calculations=

WikiSysop at 20:22, 8 December 2008

2008-12-08T20:22:21Z

← Older revision		Revision as of 20:22, 8 December 2008
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	a viable option in mobile power, especially where weight is not an		a viable option in mobile power, especially where weight is not an
	issue.		issue.

			[[Category:Solar_Turbine]]

WikiSysop at 20:21, 8 December 2008

2008-12-08T20:21:48Z

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 Elliot Hallmark provided an interesting cost analysis for solar thermal recharging of zinc-air batteries. The hope is that a highly ecological electrical energy option may be available via this route.
-=Calculations=
+=Cost Calculations=
 [[Image:dish_concentrator_wood.jpg]]

WikiSysop: New page: =Introduction= Elliot Hallmark provided an interesting cost analysis for solar thermal recharging of zinc-air batteries. The hope is that a highly ecological electrical energy option may ...

2008-12-08T20:19:47Z

New page: =Introduction= Elliot Hallmark provided an interesting cost analysis for solar thermal recharging of zinc-air batteries. The hope is that a highly ecological electrical energy option may ...

New page

=Introduction=

Elliot Hallmark provided an interesting cost analysis for solar thermal recharging of zinc-air batteries. The hope is that a highly ecological electrical energy option may be available via this route.

=Calculations=
[[Image:dish_concentrator_wood.jpg]]