EPA Regulations and Diesel Engines - Steve Stassel Regulations and Diesel Engines Steve Stassel, ......
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Transcript of EPA Regulations and Diesel Engines - Steve Stassel Regulations and Diesel Engines Steve Stassel, ......
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Diesel Engines for Rural Powerhouses
Considerations When Selecting Diesel EnginesBrian Gray, Gray Stassel Engineering
EPA Regulations and Diesel EnginesSteve Stassel, Gray Stassel Engineering
Alaska Rural Energy Conference, September 23, 2014
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Engine Selection in 2000
Fuel was cheap Engines were simple and reliable:
–Brand Preference–Load Capacity–Fuel Efficiency
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Engine Selection in 2006
Fuel Prices more than DoubledElectronic Fuel InjectionSeparately Cooled Aftercooler
–Fuel Efficiency–Load Capacity –Recoverable Heat–Brand Preference
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Fuel Cost DominatesAnnual
8760 hrs x 350 kW = 3,066,000 kWh/yr @13.0 kWh/gal = 235,000 gallons/yr @15.7 kWh/gal = 195,000 gallons/yr Fuel Savings = 40,000 gallons/yr $4.00/gallon = $160,000/yr 1-Year Payback Engine Replacement
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Fuel Cost DominatesLifetime
120 kW at 12 kWh/hr = 10 GPH 10 GPH x 50,000 Hr Life = 500,000 gallons $4.00/gallon = $2,000,000 over engine life 1% efficiency increase = $20,000 savings Engine Efficiency can vary more than 10%
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Engine Selection in 2014
–Reliability–Regulatory Compliance–Fuel Efficiency–Load Capacity –Recoverable Heat–Brand Preference
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2006 Diesel Engine
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2014 Diesel Engine
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Tier Emissions Levels
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2006 Diesel Fuel Consumption in Rural Alaska
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Emissions of Fuel Efficient Engines
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Emissions of Fuel Efficient Engines
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NSPS and RICE-NESHAP
NSPS applies to stationary diesel enginesmanufactured after April 1, 2006
Manufacturer's responsible for compliance
Owner / Operator must document operation &maintenance IAW Manufacturers Recommendations
RICE-NESHAP applies to stationary diesel enginesmanufactured before April 1, 2006
– Owner / Operator responsible for compliance
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RICE-NESHAP
Relief for Rural Alaska– Minimize time at idle and engine startup <30 minutes– Operate & Maintain engine IAW manufacturers instruct’s– Must comply with EPA Management Practices
Oil changes every 1000 hours or annually, or use oilanalysis plan
Inspect air cleaner every 1000 hours or annually Inspect hoses and belts every 500 hours or annually
– Must maintain maintenance records that documentManagement Practices AEA/AVTEC Operator Training CD ROM has mtc logs
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NSPS - New Source Performance Standards The EPA agreed that the circumstances in remote Alaska
require special rules: Removed requirement to use after treatment devices for NOX,
in particular, SCR, for engines used in remote Alaska; Allowed the blending of used lubricating oil, in volumes of up
to 1.75 percent of the total fuel, if the sulfur content of the used lubricating oil is less than 200 ppm and the used lubricating oil is ‘‘on-spec’’
Exempted all pre-2014 model year engines from diesel fuel sulfur requirements (no ULSD);
Allowed use of engines certified to marine engine standards and Tier 3 nonroad industrial engine standards; but
Requires PM after treatment devices for 2014 and later model year
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What are the Options?
Purchase 2014 Final Tier 4 Engine Purchase 2014 Tier 3 Industrial Engine
– Must install Particulate Filter Purchase 2014 Tier 3 Marine Engine
– Must install Particulate Filter Particulate filters are problematic
– Not OEM equipment – must be engineered– Costly to install– May reduce fuel efficiency– Higher maintenance costs– Unproven Reliability
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What’s the Solution?
Re-use of pre-2014 engines – “new” unused engine
– Low-hour used / rebuilt engines
– Remanufactured used engines
Not same as “OEM Repower” program
Must be pre-2014 block
Must not exceed 50/75% of new engine cost
May upgrade engine to cleaner emissions standard
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What’s Next?
AEA plans to publish guidelines for regulatory compliance using pre-2014 engines
State of Alaska will continue to work with EPA on additional regulatory relief for rural Alaska
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RICE-NESHAP: Rural Alaska (expanded)