Impact of 50% Synthesized Iso-Paraffins (SIP) on F-76 Fuel Coalescence
Abstract
In October 2009, Secretary of the Navy Ray Mabus directed the Navy to decrease its reliance on fossil fuels. The Secretary set a goal of operating with at least 50% of energy consumption coming from alternative sources by 2020. He also set forth the goal of demonstrating a Great Green Fleet, operating on 50% alternative fuel, by 2012 and deploying by 2016. The use of alternative/petroleum sourced aviation fuel blends is a critical component to achieving these goals. An alternative sourced fuel currently under-going qualification testing is a 90/10 blend of petroleum JP-5 and Synthesized Iso-Paraffins (SIP). SIP fuels are made from direct fermentation of sugar into olefinic hydrocarbons. The olefinic hydrocarbons are hydroprocessed to produce an iso-paraffinic hydrocarbon. To represent this class of renewable jet fuel, the Navy received SIP that was a 98% pure branched paraffin with a fifteen carbon chain called 2,6,10 trimethyldodecane or farnesane. The 50/50 F-76/SIP fuel blend's ability to coalesce free water was evaluated by performing a Navy Coalescence Test (NCT). The NCT is a level II fit-for-purpose test which uses a specially manufactured scaled down filter/coalescer and separator to simulate the performance of a full-scale filter separator system. This test is designed to predict the performance of new additives and fuels on filter separator systems currently in use by the fleet.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 16, 2013
- Accession Number
- ADA618856
Entities
People
- Douglas Mearns
- Jack Buffin
- Richard A. Kamin
- Terrence Dickerson
Organizations
- Naval Air Systems Command