alternative fuels workshop & wisconsin smart fleet recognition program - city of milwaukee...
DESCRIPTION
Mike O'Donnell, City of Milwaukee, presented information on Biodiesel fleet experiences for our Alternative Fuels Workshop & Wisconsin Smart Fleet Recognition Program in Madison, WI.TRANSCRIPT
Biodiesel Experiences and
Barriers
Michael O’Donnell Quality Assurance Manager
City of Milwaukee Fleet Services August 19, 2014
Diesel Volumes
• 2011 – 1,080,524 Total
– 153,206 Biodiesel (14.2%)
• 2012 – 1,041,393 Total
– 102,701 Biodiesel (9.9%)
• 2013 – 1,090,817 Total
– 21,780 Biodiesel (2.0%)
• 2014 – 562,005 Quarters 1 and 2 only
– 11,102 Biodiesel (2.0%)
Typical Sources Gel Point
• Tallow/Animal Fats 57° F • Yellow Grease 45° F • Corn Oil 40° F • Soybean Oil 32° F • Canola Oil 28° F
Sources of Biodiesel
Inexpensive
Expensive
Other Sources
• Rapeseed oil • Used cooking oil • Cottonseed oil • Sunflower oil • Algae (April 2008)
Underground Tank Maintenance And Water Removal
• Free water in the fuel storage tank accelerates corrosion and fuel degradation, and can also promote the growth of bacteria.
• Tank designs have made complete removal of water almost impossible.
• Moisture enters mostly as condensation from air. Vents and seals that are poorly constructed or maintained can allow water to infiltrate the storage tank.
• Desiccant dryers
Underground Tank Maintenance
• Inspect all Diesel Tanks in September or October • How is your fuel supply?
• Bacteria
• Water
• Start treating fuel early
Biodiesel Benefits
• Clean Burning
• Burns 78% to 90% cleaner than regular diesel depending
on the base stock used, according to the EPA.
• Can be made from almost any vegetable or animal oil
• Will run in virtually all diesel engines without special
modifications (check manufacturer’s warranty conditions)
• Offers superior lubricity, creating less engine wear
•Replaces lubricity lost with ultra-low sulfur diesel fuel
• Mixes with hydrocarbon-based diesel in any ratio
• Domestically Produced
• Reduces dependence on foreign oil
Biodiesel Cons
Fuel filters changed in addition to normal
Preventive Maintenance filter changes
Time Frame Filters Used Comments
January-December 2005 107 Before Biodiesel
January-December 2006 227 Using Biodiesel
January-December 2007 317 72% increase
January-December 2008 136 43% decrease
• Increase in cost versus petroleum diesel.
• Not suitable for long-term storage.
• Increased storage tank maintenance required.
• Can clog fuel filters quickly upon introduction.
OPTIONAL COLD WEATHER ADDITIVE PACKAGE: Bidders shall indicate the
cost to furnish and install a non-alcohol based cold weather anti-gelling, deicing
additive to the delivered fuel, capable of maintaining a cold filter plug point
(CFPP) of -30° F, +/- 4° F, based on the cold weather blend of #2 ULSD at 70%, #1
ULSD at 20%, and B100 at 10%. An acceptable additive is ValvTect High
Performance Biodiesel Anti-Gel/Deicer Additive, or City approved equal.
Proposed additive package brand/part #______________________
Cost to treat one gallon of delivered fuel $______________
Cold Weather Specifications
Work with your fuel vendor to maintain fuel consistency in cold weather situations.