Re: [biofuel] SVO versus BD
biodiesel in the main tank, wvo in the secondary tank. life is beautiful. stay tuned for an article on Greg Yohn's new '98 VW Jetta SVO/WVO conversion. Steve Spence Subscribe to the Renewable Energy Newsletter: http://www.webconx.com/subscribe.htm Renewable Energy Pages - http://www.webconx.dns2go.com/ Human powered devices, equipment, and transport - http://www.webconx.dns2go.com/2000/humanpower.htm [EMAIL PROTECTED] - Original Message - From: [EMAIL PROTECTED] To: biofuel@yahoogroups.com Sent: Wednesday, July 10, 2002 1:13 PM Subject: Re: [biofuel] SVO versus BD Thanks for the useful information and the links Reinhard Darren [EMAIL PROTECTED] schrieb: I strongly agree with Keith. SVO vs biodiesel? Neither should be dismissed each has it's place. Is very dependant on the individual situation:- What engine? Resources available for processing oils or converting vehicles. Vehicle use patterns. Vehicle operator/owners preference etc. etc. Clearly biodiesel has the greatest short term opportunities especially for transportation fuels. There has been many reports of successful SVO systems and trouble free use. There have also been problems reported but this is not exclusive to SVO use - biodiesel users especially home brewers encounter problems also. The main difference as I see it is that biodiesel fuel has been extensively researched world wide in many different engines and made from many different oil feedstock's. SVO especially WVO use remains a bit of a grey area as far as hard scientific research goes. I have seen many studies looking at vegetable oils suitability. Most conclude SVO is to thick and brush it aside as unsuitable and instead study biodiesel. There are a few good studies of SVO out there on the web: (not many that cover pre heating the oil) -The much touted ACREVO project report - very good detailed research. http://www.nf-2000.org/secure/Fair/F484.htm -Available on the web but I don't have the link handy. should be able to find it with a search engine (good news for IDI's running in Africa) FACT-Vol. 12. Solid Fuel Conversion for the Transportation Sector ASME 1991 TECHNICAL OVERVIEW OF VEGETABLE OIL AS A TRANSPORTATION FUEL Charles L. Peterson and Dick L. Auld Department of Agricultural Engineering University of Idaho Moscow, Idaho -Biocar site has a thesis research project into the use of their kit to run SVO. In German http://www.biocar.de/ Part English translation http://www.vegburner.co.uk/biocar.html (thank you Stephan) -Ed Beggs has his Renewable Oil Fuels... thesis available on his site http://www.biofuels.ca -Another one that I haven't got the link handy Waste Vegetable Oil As A Diesel Replacement Fuel Phillip Calais* and AR (Tony) Clark** * Environmental Science, Murdoch University, Perth, Australia, [EMAIL PROTECTED] ** Western Australian Renewable Fuels Association Inc, [EMAIL PROTECTED] Plenty more that go into blending vegetable oil with solvents, diesel, petrol etc. More information on SVO and WVO use is required. Does anyone know of any other scientific reports of SVO use or any studies in progress? There is the very useful FMSO Database of SVO vehicles in German. A great resource worth a look even if you can't read German http://www.fmso.de/ click on the Mehr als 300 Autos in der: Fahrzeugdatenbank! link Darren Hill www.vegburner.co.uk -Original Message- From: Keith Addison [mailto:[EMAIL PROTECTED] Sent: 09 July 2002 18:33 To: biofuel@yahoogroups.com Cc: biofuels-biz@yahoogroups.com Subject: Re: [biofuel] SVO versus BD Reinhard Henning wrote: Albert Einstein often said: Use the simplest thing that works, as long as it's the best thing. The proviso is critical, and in many cases it's context-sensitive - I believe this is the case with the biodiesel vs SVO argument. In the end it boils down to a matter of particular circumstances and individual preferences. This in mind one should compare the two actual possibilities to use plant oil as fuel: 1) adaptation of the oil to the engine (bio-diesel, BD) 2) modification of the engine to run on pure plant oil (straight vegetable oil, svo) Plant oil is pure stored solar energy in its densiest form (9,2 kg /l). It contains only the elements carbon C, hydrogen H and oxygen O. In the simplest way it is produced only by grinding of seeds and pressing (ram presses, expellers) it. Purification by sedimentation and / or filtration: Can somebody imagine a simpler method of producing highly concentrated, environmentally friendly energy. In a short term planning, it is interesting to use biodiesel, because you can use the already existing car engines. But in a longer perspective, it is more interesting to adapt the engines to run on pure plant oil (SVO). And you have all the advantages
Re: [biofuels-biz] Re: [biofuel] SVO versus BD
Thanks, Keith, for the reply. I agree with you. SVO and BD users should be informed about the pro and contra arguments and then make their choice. And I think it is important to see the long term options. Kind regards Reinhard Keith Addison [EMAIL PROTECTED] schrieb: Reinhard Henning wrote: Albert Einstein often said: Use the simplest thing that works, as long as it's the best thing. The proviso is critical, and in many cases it's context-sensitive - I believe this is the case with the biodiesel vs SVO argument. In the end it boils down to a matter of particular circumstances and individual preferences. This in mind one should compare the two actual possibilities to use plant oil as fuel: 1) adaptation of the oil to the engine (bio-diesel, BD) 2) modification of the engine to run on pure plant oil (straight vegetable oil, svo) Plant oil is pure stored solar energy in its densiest form (9,2 kg /l). It contains only the elements carbon C, hydrogen H and oxygen O. In the simplest way it is produced only by grinding of seeds and pressing (ram presses, expellers) it. Purification by sedimentation and / or filtration: Can somebody imagine a simpler method of producing highly concentrated, environmentally friendly energy. In a short term planning, it is interesting to use biodiesel, because you can use the already existing car engines. But in a longer perspective, it is more interesting to adapt the engines to run on pure plant oil (SVO). And you have all the advantages of an decentralized fuekl production. And you dont need a chemical workshop to produce your own fuele at home. A ram press for about 200 $ and some plastc barrel is all you need. That is not convincing Reinhard. In the future more diesels will probably be adapted to SVO use, but that will leave millions of vehicles all over the world not so adapted, bringing us back to the same choice between making biodiesel and rigging a two-tank system with heating etc to use SVO... on some vehicles, maybe not on others, whereas biodiesel will work in any diesel. There is also a shortage of good, long-term studies on the effects of using SVO, unlike with biodiesel, and no long-term studies on the use of WVO that I'm aware of. None of the European manufacturers of SVO systems covers the use of WVO, right? Biodiesel also gives you the advantage of decentralised fuel production. There is no need to have a chemical workshop to produce biodiesel at home. It is simple. $200 would more than cover the costs of everything needed to make biodiesel, and no need for a ram press. For the mean time, you can convert your diesel engines into plant oil engines (the still run on diesel). The conversion kits are not expensive, but they are a bit different for one engine or the other. (The Mercedes 123 engine doesn't have to be modified at all. You just run it with SVO. If its cold, you add some diesel. Some kits are better than others. Some kits are not to be recommended at all. Some manufacturers claim their kits are suitable for any diesel in any climate, using WVO, and this is not true. But people buy these kits anyway, and there are plenty of stories of ruined pumps. Again, I know of no such stories with biodiesel use. And WVO remains a problem. If this valuable waste resource, used by many or most small-scale biodiesel makers, is to be used in straight SVO systems it has to be pre-treated, with not much less processing required than that needed to make biodiesel. And you still won't have the guaranteed results that biodiesel will give you. In Germany, the producer of the tractors for agriculture are already very interested to offer SVO-versions of their diersel engines to the farmers (Deutz, John Deere). So in a short future, probably the truck engine producers will do the same and later the car engine producers. Which still leaves the older motors, especially in the Third World. Another important argument for the use of SVO instead of BD is the energy input for its production. With BD it is about 1/3, i.e. you need about 30% of the energy of 1 litre of BD to produce 1 litre of BD (in form of Merthanol or aethanol, chemicals, destillation/purification). That depends very much on how it's done, and in what setting. For the production of SVO you need only about 15 % (12 % for agriculture, 3 % for oil extraction). If you use ecological advanced production methods, you can reduce these 12 % considerably. Your second sentence applies to on-farm biodiesel production too. I have some arguments with Schrimpff's chart as well. Ernst Schrimpff of the Tecnical College of Weihenstephan, Germany, listed 8 parameters to compare SVO with BD. Here his list (partly): see also the attachment or: http://jatropha.org/p-o-engines/svo-bd-characteristics.htm Plant oil (SVO)
[biofuel] SVO versus BD
I strongly agree with Keith. SVO vs biodiesel? Neither should be dismissed each has it's place. Is very dependant on the individual situation:- What engine? Resources available for processing oils or converting vehicles. Vehicle use patterns. Vehicle operator/owners preference etc. etc. Clearly biodiesel has the greatest short term opportunities especially for transportation fuels. There has been many reports of successful SVO systems and trouble free use. There have also been problems reported but this is not exclusive to SVO use - biodiesel users especially home brewers encounter problems also. The main difference as I see it is that biodiesel fuel has been extensively researched world wide in many different engines and made from many different oil feedstock's. SVO especially WVO use remains a bit of a grey area as far as hard scientific research goes. I have seen many studies looking at vegetable oils suitability. Most conclude SVO is to thick and brush it aside as unsuitable and instead study biodiesel. There are a few good studies of SVO out there on the web: (not many that cover pre heating the oil) -The much touted ACREVO project report - very good detailed research. http://www.nf-2000.org/secure/Fair/F484.htm -Available on the web but I don't have the link handy. should be able to find it with a search engine (good news for IDI's running in Africa) FACT-Vol. 12. Solid Fuel Conversion for the Transportation Sector ASME 1991 TECHNICAL OVERVIEW OF VEGETABLE OIL AS A TRANSPORTATION FUEL Charles L. Peterson and Dick L. Auld Department of Agricultural Engineering University of Idaho Moscow, Idaho -Biocar site has a thesis research project into the use of their kit to run SVO. In German http://www.biocar.de/ Part English translation http://www.vegburner.co.uk/biocar.html (thank you Stephan) -Ed Beggs has his Renewable Oil Fuels... thesis available on his site http://www.biofuels.ca -Another one that I haven't got the link handy Waste Vegetable Oil As A Diesel Replacement Fuel Phillip Calais* and AR (Tony) Clark** * Environmental Science, Murdoch University, Perth, Australia, [EMAIL PROTECTED] ** Western Australian Renewable Fuels Association Inc, [EMAIL PROTECTED] Plenty more that go into blending vegetable oil with solvents, diesel, petrol etc. More information on SVO and WVO use is required. Does anyone know of any other scientific reports of SVO use or any studies in progress? There is the very useful FMSO Database of SVO vehicles in German. A great resource worth a look even if you can't read German http://www.fmso.de/ click on the Mehr als 300 Autos in der: Fahrzeugdatenbank! link Darren Hill www.vegburner.co.uk -Original Message- From: Keith Addison [mailto:[EMAIL PROTECTED] Sent: 09 July 2002 18:33 To: biofuel@yahoogroups.com Cc: biofuels-biz@yahoogroups.com Subject: Re: [biofuel] SVO versus BD Reinhard Henning wrote: Albert Einstein often said: Use the simplest thing that works, as long as it's the best thing. The proviso is critical, and in many cases it's context-sensitive - I believe this is the case with the biodiesel vs SVO argument. In the end it boils down to a matter of particular circumstances and individual preferences. This in mind one should compare the two actual possibilities to use plant oil as fuel: 1) adaptation of the oil to the engine (bio-diesel, BD) 2) modification of the engine to run on pure plant oil (straight vegetable oil, svo) Plant oil is pure stored solar energy in its densiest form (9,2 kg /l). It contains only the elements carbon C, hydrogen H and oxygen O. In the simplest way it is produced only by grinding of seeds and pressing (ram presses, expellers) it. Purification by sedimentation and / or filtration: Can somebody imagine a simpler method of producing highly concentrated, environmentally friendly energy. In a short term planning, it is interesting to use biodiesel, because you can use the already existing car engines. But in a longer perspective, it is more interesting to adapt the engines to run on pure plant oil (SVO). And you have all the advantages of an decentralized fuekl production. And you dont need a chemical workshop to produce your own fuele at home. A ram press for about 200 $ and some plastc barrel is all you need. That is not convincing Reinhard. In the future more diesels will probably be adapted to SVO use, but that will leave millions of vehicles all over the world not so adapted, bringing us back to the same choice between making biodiesel and rigging a two-tank system with heating etc to use SVO... on some vehicles, maybe not on others, whereas biodiesel will work in any diesel. There is also a shortage of good, long-term studies on the effects of using SVO, unlike with biodiesel, and no long-term studies on the use of WVO that I'm aware of. None of the European manufacturers of SVO systems covers the use of WVO, right? Biodiesel also
Re: [biofuel] SVO versus BD
Thanks for the useful information and the links Reinhard Darren [EMAIL PROTECTED] schrieb: I strongly agree with Keith. SVO vs biodiesel? Neither should be dismissed each has it's place. Is very dependant on the individual situation:- What engine? Resources available for processing oils or converting vehicles. Vehicle use patterns. Vehicle operator/owners preference etc. etc. Clearly biodiesel has the greatest short term opportunities especially for transportation fuels. There has been many reports of successful SVO systems and trouble free use. There have also been problems reported but this is not exclusive to SVO use - biodiesel users especially home brewers encounter problems also. The main difference as I see it is that biodiesel fuel has been extensively researched world wide in many different engines and made from many different oil feedstock's. SVO especially WVO use remains a bit of a grey area as far as hard scientific research goes. I have seen many studies looking at vegetable oils suitability. Most conclude SVO is to thick and brush it aside as unsuitable and instead study biodiesel. There are a few good studies of SVO out there on the web: (not many that cover pre heating the oil) -The much touted ACREVO project report - very good detailed research. http://www.nf-2000.org/secure/Fair/F484.htm -Available on the web but I don't have the link handy. should be able to find it with a search engine (good news for IDI's running in Africa) FACT-Vol. 12. Solid Fuel Conversion for the Transportation Sector ASME 1991 TECHNICAL OVERVIEW OF VEGETABLE OIL AS A TRANSPORTATION FUEL Charles L. Peterson and Dick L. Auld Department of Agricultural Engineering University of Idaho Moscow, Idaho -Biocar site has a thesis research project into the use of their kit to run SVO. In German http://www.biocar.de/ Part English translation http://www.vegburner.co.uk/biocar.html (thank you Stephan) -Ed Beggs has his Renewable Oil Fuels... thesis available on his site http://www.biofuels.ca -Another one that I haven't got the link handy Waste Vegetable Oil As A Diesel Replacement Fuel Phillip Calais* and AR (Tony) Clark** * Environmental Science, Murdoch University, Perth, Australia, [EMAIL PROTECTED] ** Western Australian Renewable Fuels Association Inc, [EMAIL PROTECTED] Plenty more that go into blending vegetable oil with solvents, diesel, petrol etc. More information on SVO and WVO use is required. Does anyone know of any other scientific reports of SVO use or any studies in progress? There is the very useful FMSO Database of SVO vehicles in German. A great resource worth a look even if you can't read German http://www.fmso.de/ click on the Mehr als 300 Autos in der: Fahrzeugdatenbank! link Darren Hill www.vegburner.co.uk -Original Message- From: Keith Addison [mailto:[EMAIL PROTECTED] Sent: 09 July 2002 18:33 To: biofuel@yahoogroups.com Cc: biofuels-biz@yahoogroups.com Subject: Re: [biofuel] SVO versus BD Reinhard Henning wrote: Albert Einstein often said: Use the simplest thing that works, as long as it's the best thing. The proviso is critical, and in many cases it's context-sensitive - I believe this is the case with the biodiesel vs SVO argument. In the end it boils down to a matter of particular circumstances and individual preferences. This in mind one should compare the two actual possibilities to use plant oil as fuel: 1) adaptation of the oil to the engine (bio-diesel, BD) 2) modification of the engine to run on pure plant oil (straight vegetable oil, svo) Plant oil is pure stored solar energy in its densiest form (9,2 kg /l). It contains only the elements carbon C, hydrogen H and oxygen O. In the simplest way it is produced only by grinding of seeds and pressing (ram presses, expellers) it. Purification by sedimentation and / or filtration: Can somebody imagine a simpler method of producing highly concentrated, environmentally friendly energy. In a short term planning, it is interesting to use biodiesel, because you can use the already existing car engines. But in a longer perspective, it is more interesting to adapt the engines to run on pure plant oil (SVO). And you have all the advantages of an decentralized fuekl production. And you dont need a chemical workshop to produce your own fuele at home. A ram press for about 200 $ and some plastc barrel is all you need. That is not convincing Reinhard. In the future more diesels will probably be adapted to SVO use, but that will leave millions of vehicles all over the world not so adapted, bringing us back to the same choice between making biodiesel and rigging a two-tank system with heating etc to use SVO... on some vehicles, maybe not on others, whereas biodiesel will work in any diesel. There is also a shortage of good, long-term studies
Re: [biofuel] SVO versus BD
be able to find it with a search engine (good news for IDI's running in Africa) Doesn't say that much about it though. It'd be good to track down the original South Africa study in full: Fuls. J., Hawkins, C.S. and Hugo, F.J.C., 1984, Tractor Engine Performance on Sunflower Oil Fuel, Journal of Agricultural Engineering Research 30:29-35. FACT-Vol. 12. Solid Fuel Conversion for the Transportation Sector ASME 1991 TECHNICAL OVERVIEW OF VEGETABLE OIL AS A TRANSPORTATION FUEL Charles L. Peterson and Dick L. Auld Department of Agricultural Engineering University of Idaho Moscow, Idaho -Biocar site has a thesis research project into the use of their kit to run SVO. In German http://www.biocar.de/ Part English translation http://www.vegburner.co.uk/biocar.html (thank you Stephan) File not found - can fix? I didn't know Stephan had translated it, or part of it - I do know lots of language-challenged English-speakers would like to read that report. -Ed Beggs has his Renewable Oil Fuels... thesis available on his site http://www.biofuels.ca -Another one that I haven't got the link handy Waste Vegetable Oil As A Diesel Replacement Fuel Phillip Calais* and AR (Tony) Clark** * Environmental Science, Murdoch University, Perth, Australia, [EMAIL PROTECTED] ** Western Australian Renewable Fuels Association Inc, [EMAIL PROTECTED] Plenty more that go into blending vegetable oil with solvents, diesel, petrol etc. More information on SVO and WVO use is required. Do you know of _any_ research on WVO? Best wishes Keith Does anyone know of any other scientific reports of SVO use or any studies in progress? There is the very useful FMSO Database of SVO vehicles in German. A great resource worth a look even if you can't read German http://www.fmso.de/ click on the Mehr als 300 Autos in der: Fahrzeugdatenbank! link Darren Hill www.vegburner.co.uk -Original Message- From: Keith Addison [mailto:[EMAIL PROTECTED] Sent: 09 July 2002 18:33 To: biofuel@yahoogroups.com Cc: biofuels-biz@yahoogroups.com Subject: Re: [biofuel] SVO versus BD Reinhard Henning wrote: Albert Einstein often said: Use the simplest thing that works, as long as it's the best thing. The proviso is critical, and in many cases it's context-sensitive - I believe this is the case with the biodiesel vs SVO argument. In the end it boils down to a matter of particular circumstances and individual preferences. This in mind one should compare the two actual possibilities to use plant oil as fuel: 1) adaptation of the oil to the engine (bio-diesel, BD) 2) modification of the engine to run on pure plant oil (straight vegetable oil, svo) Plant oil is pure stored solar energy in its densiest form (9,2 kg /l). It contains only the elements carbon C, hydrogen H and oxygen O. In the simplest way it is produced only by grinding of seeds and pressing (ram presses, expellers) it. Purification by sedimentation and / or filtration: Can somebody imagine a simpler method of producing highly concentrated, environmentally friendly energy. In a short term planning, it is interesting to use biodiesel, because you can use the already existing car engines. But in a longer perspective, it is more interesting to adapt the engines to run on pure plant oil (SVO). And you have all the advantages of an decentralized fuekl production. And you dont need a chemical workshop to produce your own fuele at home. A ram press for about 200 $ and some plastc barrel is all you need. That is not convincing Reinhard. In the future more diesels will probably be adapted to SVO use, but that will leave millions of vehicles all over the world not so adapted, bringing us back to the same choice between making biodiesel and rigging a two-tank system with heating etc to use SVO... on some vehicles, maybe not on others, whereas biodiesel will work in any diesel. There is also a shortage of good, long-term studies on the effects of using SVO, unlike with biodiesel, and no long-term studies on the use of WVO that I'm aware of. None of the European manufacturers of SVO systems covers the use of WVO, right? Biodiesel also gives you the advantage of decentralised fuel production. There is no need to have a chemical workshop to produce biodiesel at home. It is simple. $200 would more than cover the costs of everything needed to make biodiesel, and no need for a ram press. For the mean time, you can convert your diesel engines into plant oil engines (the still run on diesel). The conversion kits are not expensive, but they are a bit different for one engine or the other. (The Mercedes 123 engine doesn't have to be modified at all. You just run it with SVO. If its cold, you add some diesel. Some kits are better than others. Some kits are not to be recommended at all. Some manufacturers claim their kits are suitable for any diesel in any climate, using WVO, and this is not true. But people buy these kits anyway, and there are plenty
[biofuels-biz] Re: [biofuel] SVO versus BD
Reinhard Henning wrote: Albert Einstein often said: Use the simplest thing that works, as long as it's the best thing. The proviso is critical, and in many cases it's context-sensitive - I believe this is the case with the biodiesel vs SVO argument. In the end it boils down to a matter of particular circumstances and individual preferences. This in mind one should compare the two actual possibilities to use plant oil as fuel: 1) adaptation of the oil to the engine (bio-diesel, BD) 2) modification of the engine to run on pure plant oil (straight vegetable oil, svo) Plant oil is pure stored solar energy in its densiest form (9,2 kg /l). It contains only the elements carbon C, hydrogen H and oxygen O. In the simplest way it is produced only by grinding of seeds and pressing (ram presses, expellers) it. Purification by sedimentation and / or filtration: Can somebody imagine a simpler method of producing highly concentrated, environmentally friendly energy. In a short term planning, it is interesting to use biodiesel, because you can use the already existing car engines. But in a longer perspective, it is more interesting to adapt the engines to run on pure plant oil (SVO). And you have all the advantages of an decentralized fuekl production. And you dont need a chemical workshop to produce your own fuele at home. A ram press for about 200 $ and some plastc barrel is all you need. That is not convincing Reinhard. In the future more diesels will probably be adapted to SVO use, but that will leave millions of vehicles all over the world not so adapted, bringing us back to the same choice between making biodiesel and rigging a two-tank system with heating etc to use SVO... on some vehicles, maybe not on others, whereas biodiesel will work in any diesel. There is also a shortage of good, long-term studies on the effects of using SVO, unlike with biodiesel, and no long-term studies on the use of WVO that I'm aware of. None of the European manufacturers of SVO systems covers the use of WVO, right? Biodiesel also gives you the advantage of decentralised fuel production. There is no need to have a chemical workshop to produce biodiesel at home. It is simple. $200 would more than cover the costs of everything needed to make biodiesel, and no need for a ram press. For the mean time, you can convert your diesel engines into plant oil engines (the still run on diesel). The conversion kits are not expensive, but they are a bit different for one engine or the other. (The Mercedes 123 engine doesn't have to be modified at all. You just run it with SVO. If its cold, you add some diesel. Some kits are better than others. Some kits are not to be recommended at all. Some manufacturers claim their kits are suitable for any diesel in any climate, using WVO, and this is not true. But people buy these kits anyway, and there are plenty of stories of ruined pumps. Again, I know of no such stories with biodiesel use. And WVO remains a problem. If this valuable waste resource, used by many or most small-scale biodiesel makers, is to be used in straight SVO systems it has to be pre-treated, with not much less processing required than that needed to make biodiesel. And you still won't have the guaranteed results that biodiesel will give you. In Germany, the producer of the tractors for agriculture are already very interested to offer SVO-versions of their diersel engines to the farmers (Deutz, John Deere). So in a short future, probably the truck engine producers will do the same and later the car engine producers. Which still leaves the older motors, especially in the Third World. Another important argument for the use of SVO instead of BD is the energy input for its production. With BD it is about 1/3, i.e. you need about 30% of the energy of 1 litre of BD to produce 1 litre of BD (in form of Merthanol or aethanol, chemicals, destillation/purification). That depends very much on how it's done, and in what setting. For the production of SVO you need only about 15 % (12 % for agriculture, 3 % for oil extraction). If you use ecological advanced production methods, you can reduce these 12 % considerably. Your second sentence applies to on-farm biodiesel production too. I have some arguments with Schrimpff's chart as well. Ernst Schrimpff of the Tecnical College of Weihenstephan, Germany, listed 8 parameters to compare SVO with BD. Here his list (partly): see also the attachment or: http://jatropha.org/p-o-engines/svo-bd-characteristics.htm Plant oil (SVO) biodiesel (BD) 1) Physical characteristics: physical density 0,90 - 0,92 0,88 viscosity 60 - 80 7 - 8 ignition point 220 135 2) Chemical characteristics: phosphate mg/kg 15 15
[biofuel] SVO versus BD
Albert Einstein often said: Use the simplest thing that works, as long as it's the best thing. This in mind one should compare the two actual possibilities to use plant oil as fuel: 1) adaptation of the oil to the engine (bio-diesel, BD) 2) modification of the engine to run on pure plant oil (straight vegetable oil, svo) Plant oil is pure stored solar energy in its densiest form (9,2 kg /l). It contains only the elements carbon C, hydrogen H and oxygen O. In the simplest way it is produced only by grinding of seeds and pressing (ram presses, expellers) it. Purification by sedimentation and / or filtration: Can somebody imagine a simpler method of producing highly concentrated, environmentally friendly energy. In a short term planning, it is interesting to use biodiesel, because you can use the already existing car engines. But in a longer perspective, it is more interesting to adapt the engines to run on pure plant oil (SVO). And you have all the advantages of an decentralized fuekl production. And you dont need a chemical workshop to produce your own fuele at home. A ram press for about 200 $ and some plastc barrel is all you need. For the mean time, you can convert your diesel engines into plant oil engines (the still run on diesel). The conversion kits are not expensive, but they are a bit different for one engine or the other. (The Mercedes 123 engine doesn't have to be modified at all. You just run it with SVO. If its cold, you add some diesel. In Germany, the producer of the tractors for agriculture are already very interested to offer SVO-versions of their diersel engines to the farmers (Deutz, John Deere). So in a short future, probably the truck engine producers will do the same and later the car engine producers. Another important argument for the use of SVO instead of BD is the energy input for its production. With BD it is about 1/3, i.e. you need about 30% of the energy of 1 litre of BD to produce 1 litre of BD (in form of Merthanol or aethanol, chemicals, destillation/purification). For the production of SVO you need only about 15 % (12 % for agriculture, 3 % for oil extraction). If you use ecological advanced production methods, you can reduce these 12 % considerably. Ernst Schrimpff of the Tecnical College of Weihenstephan, Germany, listed 8 parameters to compare SVO with BD. Here his list (partly): see also the attachment or: http://jatropha.org/p-o-engines/svo-bd-characteristics.htm Plant oil (SVO) biodiesel (BD) 1) Physical characteristics: physical density0,90 - 0,92 0,88 viscosity 60 - 80 7 - 8 ignition point 220 135 2) Chemical characteristics: phosphate mg/kg 15 15 sulphur mg/kg10 10 Chem. reaction neutral, very low hygroscopic, solvent, fast reaction 3) Production: principle decentralized small central, big industrial units oil expellers chemical compounds needed - methanol, potassium hydroxyd energy input12 %29 % 5) Transport / storage no risk small risk 6) Environment biol. degradation very fast delayed danger to water no small human toxicity regularly notoxic (or small) material circuitcomplete difficult to realize 7) Social acceptability strategysmall, decentralizedbig, central logistics simple komplex transportation short distances long distances vulnerability small higher regional income highlow generation 8) Costs fuel production 0,25 - 0,40 0,45 - 0,60 US$ fuel prices 0,45 - 0,55 0,70 - 0,85 US$ Interesting links to this SVO - DB - discussion are: http://www.vegburner.co.uk http://www.pflanzenoel-motor.de (German) http://jatropha.org/p-o-engines/conversion-cars.htm http://elsbett.com/emotanfr.htm http://journeytoforever.org/biodiesel_svo.html Kind regards Reinhard Henning -- bagani GbR, Reinhard Henning, Rothkreuz 11, D-88138 Weissensberg, Germany Tel: ++49 8389 984129, Fax: 984128, e-mail: [EMAIL PROTECTED] internet: www.bagani.de [Non-text portions of this message have been removed] Yahoo! Groups
