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 -----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/
