Topic Area 1 - Combustion; Sub-Topic 1.4: Dynamic Stability

The summary for the Topic Area 1 - Combustion; Sub-Topic 1.4: Dynamic Stability Federal Grant is detailed below. It contains information such as the Catalog of Federal Domestic Assistance (CFDA) number, who is eligible for the grant, how much grant money will be awarded, important deadlines, and a sampling of similar government grants. Verify the accuracy of the data FederalGrants.com provides by visiting the webpage noted in the Link to Full Announcement section or by contacting the appropriate person listed in the Grant Announcement Contact section. If these sections are incomplete, please visit the website of the government agency that is offering this grant.


	Federal Grant Title:	Topic Area 1 - Combustion; Sub-Topic 1.4: Dynamic Stability
	CFDA Number:	81.089
	CFDA Description:	Fossil Energy Research and Development
	Federal Agency Name:	National Energy Technology Laboratory
	Category of Funding Activity:	Energy
	Category Explanation:	Information not provided
	Opportunity Category:	Discretionary
	Funding Opportunity Number:	DE-PS26-08NT00165-1D
	Document Type:	Modification to Previous Grants Notice
	Funding Instrument Type:	Cooperative Agreement
	Posted Date:	Mar 11, 2008
	Creation Date:	Mar 11, 2008
	Original Closing Date for Applications:	Apr 16, 2008
	Current Closing Date for Applications:	Information not provided
	Archive Date:	Jul 11, 2008
	Expected Number of Awards:	Information not provided
	Estimated Total Program Funding:	Information not provided
	Federal Grant Award Ceiling:	$500,000
	Federal Grant Award Floor:	$100,000
	Cost Sharing or Matching Requirement:	Yes

Applicants Eligible for this Grant: Private institutions of higher education Public and State controlled institutions of higher education
Additional Information on Eligibility: Information not provided
Grant Description: NOTE: This descriptive area provides an overview of Technical Topic Area 1: Sub-Topic 1.4: Dynamic Stability only. YOU MUST READ THE ENTIRE FUNDING OPPORTUNITY ANNOUNCEMENT DOCUMENT FOR ADDITIONAL INFORMATION, EVALUATION CRITERIA AND INSTRUCTIONS ON HOW TO PREPARE AN APPLICATION UNDER Technical Sub-Topic Areas. Please scroll to the bottom of this page to access the Funding Opportunity Announcement. Topic Area 1 Combustion Turbines currently operating with high hydrogen fuels currently use diffusion flame combustors with diluent (e.g., steam, nitrogen, or both) injection to lower combustion temperatures and thereby reduce NOx to a typical guaranteed range from 15 to 25 ppmv. For natural gas fuels, lean premixed combustors have been developed to produce guaranteed NOx emissions down to the about 9 ppmv. Similar developments are needed to adapt lean premixed combustion approaches to achieve low level emissions using high hydrogen fuels derived from syngas. Formidable challenges to the development of lean premixed combustors for high hydrogen fuels derived from syngas result from their unique properties (e.g., high flame speed, high diffusivity, short ignition delay time, and wide flammability limits) and range of compositions (e.g., H2, CO, H2O). Also, the DOE goal for turbines using high hydrogen fuels is 2 ppmv NOx at 15% O2 is significantly lower than what is now guaranteed for turbines operating with lean premixed combustors and with conventional fuels. Consequently, additional fundamental combustion experiments and modeling research are needed to advance lean premixed combustion approaches to produce guaranteed lower NOx emissions than achieved in the past but using fuels with more difficult and variable properties. For that purpose, the following research topics address the combustion and operability issues (blowout, flashback, dynamic stability, etc.) to achieve fundamental capabilities needed for the design of low single digit NOx emissions combustors that use high hydrogen fuels derived from coal syngas. Proposed research should consider ranges in fuel compositions (corresponding to various gasification processes) and conditions (corresponding to different turbines) expected for syngas and high hydrogen fuels derived from syngas. If facilities used in the research cannot replicate turbine combustor pressure and inlet temperature conditions, rationale must be provided for relating the experimental data and interpretations to the design of high pressure turbine combustors. Possible HHC fuel compositions are dictated by the contents of carbon compounds in the turbine exhaust that would be able to achieve a coal-based Integrated Gasification Combined Cycle (IGCC) plant operation with 90% carbon capture (i.e. the dry gas contents of CO, CO2, and CH4 are restricted to less that 5 mole% and the dry hydrogen content is in the range of 90 mole%). Applicants to this FOA should address an appropriate range of fuel gas compositions that will allow them to ascertain the governing phenomena when assessing mixing processes and kinetic data for the HHC fuel. Combustor operating conditions for conventional turbine systems using air as the oxidant could range from 700 to 950 F inlet temperatures, 2300 to 2650 F first stage rotor inlet temperatures, and pressures from 15 to 25 atmospheres. Sub-Topic 1.4: Dynamic Stability (DE-PS26-08NT00165-1D) Experiments using high hydrogen fuels in lean pre-mixed combustors have shown significant dynamic stability issues. Furthermore, the different flame structure resulted in much higher frequency modes compared to the same premixed combustor operated with natural gas. Consequently, experiments with high hydrogen fuels and improved models are needed to: Better characterize the basic physical and chemical driving parameters that determine when a flame is stable or unstable. Characterize the flame characteristics to adequately predict combustion dynamics for the design of lean, pre-mixed combustors operating with high hydrogen fuels.
Link to Full Grant Announcement: Visit this URL to view the Opportunity
https://e-center.doe.gov/iips/faopor.nsf/UNID/59EB8CB1D48B14FA85257409006F25E5?OpenDocument
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iips_helpdesk@e-center.doe.gov
Raymond Johnson
johnson@netl.doe.gov
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