Off-world Power Generation - Revision history

M at 20:04, 18 April 2021

2021-04-18T20:04:43Z

← Older revision		Revision as of 20:04, 18 April 2021
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	==== Premise ====		==== Premise ====

	<Earth> <-clearsky-burst-laser-- <~~Earth-orbit~~ satellite>		<Earth> <-clearsky-burst-laser-- <satellite>

	==== Goal ====		==== Goal ====

	Near-~~Earth~~ solar array about the size of Nebraska to power the globe.		Near-earth or Lagrange-point solar array about the size of Nebraska to power the globe.

	Calculations:		Calculations:

M at 00:45, 17 January 2019

2019-01-17T00:45:27Z

← Older revision		Revision as of 00:45, 17 January 2019
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	=== [[Off-world Power Generation Crowdfunding\|Crowdfunding]] ===		=== [[Off-world Power Generation Crowdfunding\|Crowdfunding]] ===

			=== [[Off-world Power Generation Patrons\|Patrons]] ===

M: /* Goal */

2019-01-04T19:33:44Z

Goal

← Older revision		Revision as of 19:33, 4 January 2019
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	* Approximate energy absorbable by a solar panel in space: 320W / 1.64m^2 / .48% = 400W/m^2 in space		* Approximate energy absorbable by a solar panel in space: 320W / 1.64m^2 / .48% = 400W/m^2 in space
	* Approximate required size of a solar array "near Earth" (including l1) to power NYC: 100GW / 400W/m^s = 250 sq km		* Approximate required size of a solar array "near Earth" (including l1) to power NYC: 100GW / 400W/m^s = 250 sq km
	* 1 out of every 811 humans on earth live in NYC, so 250 sq km dish * 811 (assuming every human uses as much energy as a New Yorker) requires a solar array of only around 200,000 sq km - the size of Nebraska - to power the globe. A physicist confirms on the back of an envelope that the area needed [https://youtu.be/E0W1ZZYIV8o will be "country-sized"].		* 1 out of every 811 humans on earth live in NYC, so 250 sq km dish * 811 (assuming every human uses as much energy as a New Yorker) requires a solar array of only around 200,000 sq km - the size of Nebraska - to power the globe. A physicist confirms on the back of an envelope that the area needed [https://youtu.be/E0W1ZZYIV8o will be "near-(UK)-country-sized"].

	==== Conclusion ====		==== Conclusion ====

M: /* Goal */

2019-01-04T19:32:55Z

Goal

← Older revision		Revision as of 19:32, 4 January 2019
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	* Approximate energy absorbable by a solar panel in space: 320W / 1.64m^2 / .48% = 400W/m^2 in space		* Approximate energy absorbable by a solar panel in space: 320W / 1.64m^2 / .48% = 400W/m^2 in space
	* Approximate required size of a solar array "near Earth" (including l1) to power NYC: 100GW / 400W/m^s = 250 sq km		* Approximate required size of a solar array "near Earth" (including l1) to power NYC: 100GW / 400W/m^s = 250 sq km
	* 1 out of every 811 humans on earth live in NYC, so 250 sq km dish * 811 (assuming every human uses as much energy as a New Yorker) requires a solar array of only around 200,000 sq km - the size of Nebraska - to power the globe. A physicist confirms the area needed [https://youtu.be/E0W1ZZYIV8o will be "country-sized"].		* 1 out of every 811 humans on earth live in NYC, so 250 sq km dish * 811 (assuming every human uses as much energy as a New Yorker) requires a solar array of only around 200,000 sq km - the size of Nebraska - to power the globe. A physicist confirms on the back of an envelope that the area needed [https://youtu.be/E0W1ZZYIV8o will be "country-sized"].

	==== Conclusion ====		==== Conclusion ====

M: /* Goal */

2019-01-04T19:29:41Z

Goal

← Older revision		Revision as of 19:29, 4 January 2019
Line 17:		Line 17:
	* Approximate energy absorbable by a solar panel in space: 320W / 1.64m^2 / .48% = 400W/m^2 in space		* Approximate energy absorbable by a solar panel in space: 320W / 1.64m^2 / .48% = 400W/m^2 in space
	* Approximate required size of a solar array "near Earth" (including l1) to power NYC: 100GW / 400W/m^s = 250 sq km		* Approximate required size of a solar array "near Earth" (including l1) to power NYC: 100GW / 400W/m^s = 250 sq km
	* 1 out of every 811 humans on earth live in NYC, so 250 sq km dish * 811 (assuming every human uses as much energy as a New Yorker) requires a solar array of only around 200,000 sq km - the size of Nebraska - to power the globe.		* 1 out of every 811 humans on earth live in NYC, so 250 sq km dish * 811 (assuming every human uses as much energy as a New Yorker) requires a solar array of only around 200,000 sq km - the size of Nebraska - to power the globe. A physicist confirms the area needed [https://youtu.be/E0W1ZZYIV8o will be "country-sized"].

	==== Conclusion ====		==== Conclusion ====

M at 19:09, 21 December 2018

2018-12-21T19:09:30Z

@@ Line 3: / Line 3: @@
 ==== Premise ====
-* <Earth> <-clearsky-burst-laser-- <Earth-orbit satellite>
+<Earth>   <-clearsky-burst-laser--   <Earth-orbit satellite>
-==== Goal ==== near-Earth solar array about the size of Nebraska to power the globe
+==== Goal ====
-* Use the energy requirement of NYC: ~3000 trillion BTU in 2016 = 3000 trillion btu / 365 days = 3.4E+11 btu/hr = 1.0036680479e+11 watts = 100 GW
+Near-Earth solar array about the size of Nebraska to power the globe.
 * [https://en.wikipedia.org/wiki/List_of_photovoltaic_power_stations PV power stations] collect more power than [https://en.wikipedia.org/wiki/List_of_solar_thermal_power_stations solar thermal power stations].  They seem to average ~3 MW/km^2 (throwing out 2 ridiculous outliers).
 * Traditional single-junction cells have a maximum theoretical efficiency of 33.16% [https://en.wikipedia.org/wiki/Solar_cell_efficiency more].  In reality it is around [https://www.solarpowerrocks.com/solar-basics/how-much-electricity-does-a-solar-panel-produce/#top10 18.7%].
@@ Line 16: / Line 19: @@
 * 1 out of every 811 humans on earth live in NYC, so 250 sq km dish * 811 (assuming every human uses as much energy as a New Yorker) requires a solar array of only around 200,000 sq km - the size of Nebraska - to power the globe.
+==== Conclusion ====
 Keep it as simple as possible, but no less.

M at 19:07, 21 December 2018

2018-12-21T19:07:20Z

← Older revision		Revision as of 19:07, 21 December 2018
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	=== Concept ===		=== Concept ===

	Premise:		==== Premise ====

	* <Earth> <-clearsky-burst-laser-- <Earth-orbit satellite>		* <Earth> <-clearsky-burst-laser-- <Earth-orbit satellite>

			==== Goal ==== near-Earth solar array about the size of Nebraska to power the globe

			* Use the energy requirement of NYC: ~3000 trillion BTU in 2016 = 3000 trillion btu / 365 days = 3.4E+11 btu/hr = 1.0036680479e+11 watts = 100 GW
			* [https://en.wikipedia.org/wiki/List_of_photovoltaic_power_stations PV power stations] collect more power than [https://en.wikipedia.org/wiki/List_of_solar_thermal_power_stations solar thermal power stations]. They seem to average ~3 MW/km^2 (throwing out 2 ridiculous outliers).
			* Traditional single-junction cells have a maximum theoretical efficiency of 33.16% [https://en.wikipedia.org/wiki/Solar_cell_efficiency more]. In reality it is around [https://www.solarpowerrocks.com/solar-basics/how-much-electricity-does-a-solar-panel-produce/#top10 18.7%].
			* A 65"x39" (1.64 m^2) solar panel made in 2018 [https://www.solarpowerrocks.com/solar-basics/how-much-electricity-does-a-solar-panel-produce/#top10 produces ~320W].
			* About 48% of solar energy hitting the Earth reaches the surface. Perhaps optimistic, but we will divide by .48 to get energy-in-space vs on-earth.
			* Approximate energy absorbable by a solar panel in space: 320W / 1.64m^2 / .48% = 400W/m^2 in space
			* Approximate required size of a solar array "near Earth" (including l1) to power NYC: 100GW / 400W/m^s = 250 sq km
			* 1 out of every 811 humans on earth live in NYC, so 250 sq km dish * 811 (assuming every human uses as much energy as a New Yorker) requires a solar array of only around 200,000 sq km - the size of Nebraska - to power the globe.




			* Power is measured in Newton-meters per second or Joules per second or Watts.

	Less likely:		Less likely:
Line 26:		Line 42:
	Receive: Several hundred meters across		Receive: Several hundred meters across

	~~Targeting the energy requirement of NYC:~~
	* Power is measured in Newton-meters per second or Joules per second or Watts.
	* ~3000 trillion BTU in 2016 = 3000 trillion btu / 365 days = 3.4E+11 btu/hr = 1.0036680479e+11 watts = 100 GW

	PV energy collection		PV energy collection
	* [https://en.wikipedia.org/wiki/List_of_photovoltaic_power_stations PV power stations] collect more power than [https://en.wikipedia.org/wiki/List_of_solar_thermal_power_stations solar thermal power stations]. They seem to average ~3 MW/km^2 (throwing out 2 ridiculous outliers).
	* Traditional single-junction cells have a maximum theoretical efficiency of 33.16% [https://en.wikipedia.org/wiki/Solar_cell_efficiency more]. In reality it is around [https://www.solarpowerrocks.com/solar-basics/how-much-electricity-does-a-solar-panel-produce/#top10 18.7%].
	* A 65"x39" (1.64 m^2) solar panel made in 2018 [https://www.solarpowerrocks.com/solar-basics/how-much-electricity-does-a-solar-panel-produce/#top10 produces ~320W].
	* About 48% of solar energy hitting the Earth reaches the surface. Perhaps optimistic, but we will divide by .48 to get energy-in-space vs on-earth.
	* Approximate energy absorbable by a solar panel in space: 320W / 1.64m^2 / .48% = 400W/m^2 in space
	* Approximate required size of a solar array "near Earth" (including l1) to power NYC: 100GW / 400W/m^s = 250 sq km
	* Dan: 1 out of every 811 humans on earth live in NYC, so 250 sq km dish * 811 (assuming every human uses as much energy as a New Yorker) requires a solar array of only around 200,000 sq km - the size of Nebraska - to power the globe.

	=== Conclusion ===		=== Conclusion ===

M: /* Concept */

2018-12-21T18:59:08Z

Concept

@@ Line 1: / Line 1: @@
 === Concept ===
-Name ideas: Freespace Division of Miller Power
+Premise:
 Given:
@@ Line 13: / Line 22: @@
 * [https://en.wikipedia.org/wiki/Space-based_solar_power current status]: A Gigawatt-range microwave system would weigh ~80,000 tons (prohibitively expensive) [https://www.energy.gov/articles/space-based-solar-power more] [https://e-reports-ext.llnl.gov/pdf/372187.pdf lots more]
 * [https://en.wikipedia.org/wiki/Solar_cell_efficiency Solar cell efficiency]
 Laser transmit antenna in space: 1 meter diameter per GW

M: /* Concept */

2018-12-13T03:00:18Z

Concept

← Older revision		Revision as of 03:00, 13 December 2018
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	* <Earth> <-microwave-- <Earth-orbit satellite> <-laser-- <Earth's moon> <-laser-- <L1 solar array>		* <Earth> <-microwave-- <Earth-orbit satellite> <-laser-- <Earth's moon> <-laser-- <L1 solar array>
	* <Earth> <-clearsky-burst-laser-- <Earth's moon> <-laser-- <L1 solar array>		* <Earth> <-clearsky-burst-laser-- <Earth's moon> <-laser-- <L1 solar array>
			* <Earth-orbit satellite> <- <Earth's moon>
			* <Earth's moon> <- <Earth-Sol Lagrange-point solar array>

	Laser transmit antenna in space: 1 meter diameter per GW		Laser transmit antenna in space: 1 meter diameter per GW
	Receive: Several hundred meters across		Receive: Several hundred meters across

	* <Earth-orbit satellite> <- <Earth's moon>

	* <Earth's moon> <- <Earth-Sol Lagrange-point solar array>

	Targeting the energy requirement of NYC:		Targeting the energy requirement of NYC:

M at 02:34, 13 December 2018

2018-12-13T02:34:27Z

← Older revision		Revision as of 02:34, 13 December 2018
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	* We need to determine the requirements to receive laser power at an Earth-based power plant.		* We need to determine the requirements to receive laser power at an Earth-based power plant.
	* We need to crowdfund the project.		* We need to crowdfund the project.

	~~=== [[Off-world Power Generation Components\|Components]] ===~~

	=== [[Off-world Power Generation Research\|Research]] ===		=== [[Off-world Power Generation Research\|Research]] ===