Hydrogen - Revision history

Marcin: /* Internal Links */

2024-12-11T19:29:54Z

Internal Links

← Older revision		Revision as of 19:29, 11 December 2024
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	*[[H-CNG]]		*[[H-CNG]]
	*[[Sabatier Reaction]]		*[[Sabatier Reaction]]
			*[[Hydrogen Production]]

	=External Links=		=External Links=

Eric: Minor Text Formating Fix

2021-04-26T21:49:21Z

Minor Text Formating Fix

← Older revision		Revision as of 21:49, 26 April 2021
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	*[https://www.youtube.com/watch?v=1Ajq46qHp0c A Video on the Problems with Hydrogen ICE's ]		*[https://www.youtube.com/watch?v=1Ajq46qHp0c A Video on the Problems with Hydrogen ICE's ]

	[[Category:~~Biofuels~~]] [[Category:Solar Hydrogen]]		[[Category: Biofuel]] [[Category:Solar Hydrogen]]

Eric: Added some more links under the "External Links" section

2020-05-26T00:19:41Z

Added some more links under the "External Links" section

← Older revision		Revision as of 00:19, 26 May 2020
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	*3000 PSI storage - 100 gallon volume required for 7.5 gallon gasoline equivalent. [http://www.fsec.ucf.edu/en/consumer/hydrogen/basics/documents/task2_gaseous_h2.pdf]		*3000 PSI storage - 100 gallon volume required for 7.5 gallon gasoline equivalent. [http://www.fsec.ucf.edu/en/consumer/hydrogen/basics/documents/task2_gaseous_h2.pdf]
	*Online shop for hydrogen components and fuelcells [http://fuelcellstore.com http://fuelcellstore.com]		*Online shop for hydrogen components and fuelcells [http://fuelcellstore.com http://fuelcellstore.com]
			*[https://www.youtube.com/watch?v=1Ajq46qHp0c A Video on the Problems with Hydrogen ICE's ]

	[[Category:Biofuels]] [[Category:Solar Hydrogen]]		[[Category:Biofuels]] [[Category:Solar Hydrogen]]

Eric: Added some more information

2020-05-26T00:17:14Z

Added some more information

← Older revision		Revision as of 00:17, 26 May 2020
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	*Online shop for hydrogen components and fuelcells [http://fuelcellstore.com http://fuelcellstore.com]		*Online shop for hydrogen components and fuelcells [http://fuelcellstore.com http://fuelcellstore.com]

	[[Category:Solar Hydrogen]]		[[Category:Biofuels]] [[Category:Solar Hydrogen]]

Eric: Moved some stuff around and added some other stufff

2020-05-26T00:14:17Z

Moved some stuff around and added some other stufff

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 *Enthalpy of combustion - 286kJ/mol - [http://en.wikipedia.org/wiki/Hydrogen].
 *Heat of combustion (per mass) - Compare to gasoline or diesel - enthalpy of combustion of hydrogen is about 3x as large - [http://en.wikipedia.org/wiki/Heat_of_combustion]
 *Hydrogen has about 1/8 and 1/3 the volumetric density, resepctively, compared to propane and natural gas.
 *Let's look at basic calculations.
-*Compare to energy fuel efficiency of gasoline engin - 200 g/kWh, best marine diesel - 150 g/kWhr - [http://en.wikipedia.org/wiki/Brake_specific_fuel_consumption]
+*Compare to energy fuel efficiency of gasoline engine - 200 g/kWh, best marine diesel - 150 g/kWhr - [http://en.wikipedia.org/wiki/Brake_specific_fuel_consumption]
-*Online shop for hydrogen components and fuelcells [http://fuelcellstore.com http://fuelcellstore.com]
@@ Line 18: / Line 61: @@
 Another check - H2 is 150 MJ/kg. Thus, 4 kg in the 100 gallon / 100 atm storage have  600 MJ. Divide by 5 for 20% efficiency of internal combustion engines - or 120 MJ. That is 33kWhr of energy, or 44 hp-hr. Range might be about 200-400 miles. About 2 gallons of fuel equivalent.
-=Conclusions=
+==Conclusions==
 *Feasible with efficient design; acceptable range
 *Double the pressure of stored hydrogen - double the range or half the tank volume.
 *Economics - doable with open source storage cylinders. Type I high pressure tank is the lowest rating for all pressure tanks, and has a max pressure of 200 atmospheres.
-=Some more background Research=
+==Some more background Research==
 #Sample results - [http://www.hydrogen.energy.gov/pdfs/progress06/ii_h_5_ibrahim.pdf] and [http://www.pci.tu-bs.de/agbauerecker/VorlesungPC-GrundlagenWasserstoffwirtschaft2014_2015/High-pressure%20electrolysis.pdf], and [http://www.schatzlab.org/news/author/greg/] and [http://www.schatzlab.org/docs/engel_paper_1.pdf]. 30 atm alkaline electrolyzer - [http://ieahia.org/pdfs/Task25/alkaline-electrolysis.pdf].
 #Electrolyzer costs - $1k/kW. For $3k we can have storage of H2 in PVC pipe - $1/watt for solar panels, $1k for an electrolyzer, and then we produce hydrogen at about 27hp-hr volume. This is enough for 4 hours of cooking on an industrial size burner. [http://ieahia.org/pdfs/Task25/alkaline-electrolysis.pdf] - up to 30 ATM.
-=Sample Conclusion=
+==Sample Conclusion==
 ATM alkaline electrolyzers are proven and available technology. [http://ieahia.org/pdfs/Task25/alkaline-electrolysis.pdf]. Based on [[Hydrogen]] discussion, a maximum allowable tank size for a personal vehicle is 1 [[GGE]] - or about 27 hp hours. That is acceptable for a superefficient personal vehicle. The battery pack size for a Tesla is 80 hp-hr, at $15k so the hydrogen storage GGE/[[ESE]] is approximately 100x lower cost over an LCA time of 100 years than the Lithium Ion battery. The hydrogen storage is assumed to be 2400' of of 1" schedule 80 PVC pipe, based on 50-100 year [[PVC Lifetime]].
-=Links=
+=Internal Links=
 *3000 PSI storage - 100 gallon volume required for 7.5 gallon gasoline equivalent. [http://www.fsec.ucf.edu/en/consumer/hydrogen/basics/documents/task2_gaseous_h2.pdf]
+*Online shop for hydrogen components and fuelcells [http://fuelcellstore.com http://fuelcellstore.com]
 [[Category:Solar Hydrogen]]

Marcin at 20:24, 10 February 2019

2019-02-10T20:24:06Z

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			[[Category:Solar Hydrogen]]

Marcin: /* Links */

2017-12-22T19:12:16Z

Links

← Older revision		Revision as of 19:12, 22 December 2017
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	=Links=		=Links=
	*3000 PSI storage - 100 gallon volume required for 7.5 gallon gasoline equivalent.		*3000 PSI storage - 100 gallon volume required for 7.5 gallon gasoline equivalent. [http://www.fsec.ucf.edu/en/consumer/hydrogen/basics/documents/task2_gaseous_h2.pdf]

	=What are your comments on the feasibility of alkaline pressurized hydrogen as a fuel?=		=What are your comments on the feasibility of alkaline pressurized hydrogen as a fuel?=

Marcin at 19:11, 22 December 2017

2017-12-22T19:11:54Z

← Older revision		Revision as of 19:11, 22 December 2017
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	=Sample Conclusion=		=Sample Conclusion=
	30ATM alkaline electrolyzers are proven and available technology. [http://ieahia.org/pdfs/Task25/alkaline-electrolysis.pdf]. Based on [[Hydrogen]] discussion, a maximum allowable tank size for a personal vehicle is 1 [[GGE]] - or about 27 hp hours. That is acceptable for a superefficient personal vehicle. The battery pack size for a Tesla is 80 hp-hr, at $15k so the hydrogen storage GGE/[[ESE]] is approximately 100x lower cost over an LCA time of 100 years than the Lithium Ion battery. The hydrogen storage is assumed to be 2400' of of 1" schedule 80 PVC pipe, based on 50-100 year [[PVC Lifetime]].		30ATM alkaline electrolyzers are proven and available technology. [http://ieahia.org/pdfs/Task25/alkaline-electrolysis.pdf]. Based on [[Hydrogen]] discussion, a maximum allowable tank size for a personal vehicle is 1 [[GGE]] - or about 27 hp hours. That is acceptable for a superefficient personal vehicle. The battery pack size for a Tesla is 80 hp-hr, at $15k so the hydrogen storage GGE/[[ESE]] is approximately 100x lower cost over an LCA time of 100 years than the Lithium Ion battery. The hydrogen storage is assumed to be 2400' of of 1" schedule 80 PVC pipe, based on 50-100 year [[PVC Lifetime]].

			=Links=
			*3000 PSI storage - 100 gallon volume required for 7.5 gallon gasoline equivalent.

	=What are your comments on the feasibility of alkaline pressurized hydrogen as a fuel?=		=What are your comments on the feasibility of alkaline pressurized hydrogen as a fuel?=

Marcin: /* Discussion on Feasibility of Compressed Hydrogen Storage Tanks */

2017-12-22T19:10:49Z

Discussion on Feasibility of Compressed Hydrogen Storage Tanks

← Older revision		Revision as of 19:10, 22 December 2017
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	In practical terms - based on our Briggs and Stratton 27 hp gas engine - that is about 75 hp hours. Sufficient for a very small personal vehicle, and arguably more efficient than electric cars from the scalability and Decentralization Perspective.		In practical terms - based on our Briggs and Stratton 27 hp gas engine - that is about 75 hp hours. Sufficient for a very small personal vehicle, and arguably more efficient than electric cars from the scalability and Decentralization Perspective.

	For comparison to propane - a 20 lb tank of propane (5 gallons about) - is only 200 grams of hydrogen at 100 atmospheres. ~~So 10,000 grams/200 grams = 50x less volume efficiency. Marginal - but just sufficient for microcars with combustion engines~~.		For comparison to the volume of a propane container - a 20 lb tank of propane (5 gallons about) - is only 200 grams of hydrogen at 100 atmospheres. Not a lot.

	Based on efficiency measures - heat engines being about 20% efficient - can we show that enthalpy of combustion gives a reliable measure of hp-hr? Gasoline is 50MJ/kg enthalpy of combustion. 50 MJ 50 MWs - or 14 kWh. This is 56 kWh of enthalpy for one gallon of fuel. Or 75 hp-h. A 27 hp engine running for 1 hour is about 30% efficiency - about right.		Based on efficiency measures - heat engines being about 20% efficient - can we show that enthalpy of combustion gives a reliable measure of hp-hr? Gasoline is 50MJ/kg enthalpy of combustion. 50 MJ 50 MWs - or 14 kWh. This is 56 kWh of enthalpy for one gallon of fuel. Or 75 hp-h. A 27 hp engine running for 1 hour is about 30% efficiency - about right.

	Another check - H2 is 150 MJ/kg. Thus, 4 kg in the 100 gallon / 100 atm storage have 600 MJ. Divide by 5 for 20% efficiency of internal combustion engines - or 120 MJ. That is 33kWhr of energy, or 44 hp-hr. Range might be about 200-400 miles. About 2 gallons of fuel equivalent. Say we do an average of 5 hp requirement for a lightweight vehicle - 200 kg vehicle - that might get us from a to be in a reliable way. But, marginal. Definitely run into storage limits - unless extremely efficient design is involved. High tech.		Another check - H2 is 150 MJ/kg. Thus, 4 kg in the 100 gallon / 100 atm storage have 600 MJ. Divide by 5 for 20% efficiency of internal combustion engines - or 120 MJ. That is 33kWhr of energy, or 44 hp-hr. Range might be about 200-400 miles. About 2 gallons of fuel equivalent.

	=Conclusions=		=Conclusions=

Jth: Add onlineshop for hydrogen components, see storage

2015-02-05T05:50:32Z

Add onlineshop for hydrogen components, see storage

← Older revision		Revision as of 05:50, 5 February 2015
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	*Let's look at basic calculations.		*Let's look at basic calculations.
	*Compare to energy fuel efficiency of gasoline engin - 200 g/kWh, best marine diesel - 150 g/kWhr - [http://en.wikipedia.org/wiki/Brake_specific_fuel_consumption]		*Compare to energy fuel efficiency of gasoline engin - 200 g/kWh, best marine diesel - 150 g/kWhr - [http://en.wikipedia.org/wiki/Brake_specific_fuel_consumption]
			*Online shop for hydrogen components and fuelcells [http://fuelcellstore.com http://fuelcellstore.com]


	=Discussion on Feasibility of Compressed Hydrogen Storage Tanks=		=Discussion on Feasibility of Compressed Hydrogen Storage Tanks=