Queen Anne gallon (US) 8 pounds (H2O)x .87 (avg. SG) = 6.96 -- call it 7 17.5 x 7 = 122.5 kBTU 0r about 94% of pet. diesel.
So specific consumption should be 192 to 245 grams of biodiesel per horsepower hour. Yes? Kirk -----Original Message----- From: Keith Addison [mailto:[EMAIL PROTECTED] Sent: Monday, August 20, 2001 2:30 PM To: biofuel@yahoogroups.com Subject: RE: [biofuel] biodiesel performance in stationary diesel engines >180 to 230 grams per horsepower hour is normal petroleum diesel consumption. >Burlington Northern RR did a safflower project but I read the paper over 7 >years ago and have forgotten their numbers. How many BTU in a gallon of >biodiesel? Pet. product is about 130k if I remember. > >Kirk Bio Diesel 17'500 Btu per 1lb, SG .86-.88 Keith Addison Journey to Forever Handmade Projects Tokyo http://journeytoforever.org/ >-----Original Message----- >From: Nicola Smith [mailto:[EMAIL PROTECTED] >Sent: Monday, August 20, 2001 5:28 AM >To: biofuel@yahoogroups.com >Subject: [biofuel] biodiesel performance in stationary diesel engines > > >Dear All, > >I wonder if you can help me. I am trying to find out how the specific fuel >consumption of biodiesel in diesel engines varies compared with that of >diesel. When I was looking at fuel consumption in vehicles, I was told that >this was the same for biodiesel as for diesel, despite the lower heating >value, and I assumed that this is because it burns more efficiently and also >due to its increased lubricity. > >However, I am now interested in assessing the use of biodiesel in diesel >generating sets for CHP, and have encountered the problem that, if I keep >the fuel consumption the same, and assume the same output of electricity and >heat, then I am getting out more kWh than I am putting in due to the lower >heating value!! I have therefore come up with two possible explainations. >Either the increased lubricity means that less waste heat is produced, or >the fuel consumption should be increased. > >If the first is true, what typical electricity to heat ratio should I get >from this type of plant (or by what factor would this vary from using diesel >as the fuel)? > >If the second is true, by what percentage should the fuel consumption be >increased, and should this also be done for the vehicle fuel consumption? > >What actually is the standard Lower Heating Value (kJ/kg) for biodiesel? > >Any help with these questions would be greatly appreciated. > >With Thanks, > >Nicola Smith, > >University of Strathclyde, >Glasgow, >Scotland UK. > >[EMAIL PROTECTED] Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Please do NOT send "unsubscribe" messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ --- Incoming mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.265 / Virus Database: 137 - Release Date: 7/18/2001 Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Please do NOT send "unsubscribe" messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
