Low Cost High Efficiency Ultra Low Nox Arice Solution Using Hcci Combustion

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Low Cost High Efficiency Ultra Low Nox Arice Solution Using Hcci Combustion

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Author :
language : en
Publisher:
Release Date : 2010

Low Cost High Efficiency Ultra Low Nox Arice Solution Using Hcci Combustion written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with Internal combustion engines categories.

Low Cost High Efficiency Ultra Low Nox Arice Solution Using Hcci Combustion

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Author :
language : en
Publisher:
Release Date : 2004

Low Cost High Efficiency Ultra Low Nox Arice Solution Using Hcci Combustion written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with categories.

This report describes the activities related to siting and installation of the multi-cylinder engine for homogeneous charge compression ignition (HCCI) engine operation as part of the Advanced Reciprocating Internal Combustion Engine (ARICE) program. Site selection involved locating a site that was appropriate for engine operation related to the project goals. A key part of the site selection was the choice of the engine generator set. The criteria used for selection of the site and engine generator set are discussed in relation to satisfying the goals of this project. This report describes the work on this task as part of the larger ARICE HCCI engine development project.

Turbulent Premixed Flames

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Author : Nedunchezhian Swaminathan
language : en
Publisher: Cambridge University Press
Release Date : 2011-04-25

Turbulent Premixed Flames written by Nedunchezhian Swaminathan and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-04-25 with Technology & Engineering categories.

A work on turbulent premixed combustion is important because of increased concern about the environmental impact of combustion and the search for new combustion concepts and technologies. An improved understanding of lean fuel turbulent premixed flames must play a central role in the fundamental science of these new concepts. Lean premixed flames have the potential to offer ultra-low emission levels, but they are notoriously susceptible to combustion oscillations. Thus, sophisticated control measures are inevitably required. The editors' intent is to set out the modeling aspects in the field of turbulent premixed combustion. Good progress has been made on this topic, and this cohesive volume contains contributions from international experts on various subtopics of the lean premixed flame problem.

Annual Index Abstracts Of Sae Technical Papers 2004

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Author :
language : en
Publisher:
Release Date : 2005

Annual Index Abstracts Of Sae Technical Papers 2004 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Automobiles categories.

Annual Index Abstracts Of Sae Technical Papers 2000

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Author : Society Of Automotive Engineers
language : en
Publisher:
Release Date : 2001

Annual Index Abstracts Of Sae Technical Papers 2000 written by Society Of Automotive Engineers and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with categories.

A Computational Study On Ethanol Hcci Combustion Microform

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Author : Cathy Ka Wai Ng
language : en
Publisher: Library and Archives Canada = Bibliothèque et Archives Canada
Release Date : 2004

A Computational Study On Ethanol Hcci Combustion Microform written by Cathy Ka Wai Ng and has been published by Library and Archives Canada = Bibliothèque et Archives Canada this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with categories.

Homogeneous charge compression ignition (HCCI) engines have great potential in high efficiency with ultra-low NOx and particulates emissions. Therefore, fundamentals of HCCI and the control techniques of changing initial temperature, equivalence ratio, exhaust gas recirculation (EGR) rate and fuel reforming rate are examined using a single-zone well-stirred reactor model of an ethanol engine. In particular, the expansion of the Acceptable Operating Range (AOR) using fuel reforming, complemented by EGR, is investigated. It is found that reforming extends the complete combustion limit of the AOR, but shrinks the NOx emission limit. Reforming is also less effective than EGR in widening the AOR at the conditions studied. Therefore, reforming should be used only at temperatures near the ignition limit to enhance combustion. It is recommended that other control techniques, such as using different fuel and additives, and stratified charge combustion should be tested using a more sophisticated multi-zone well-stirred reactor model.

Ultra Low Nox Catalytic Combustion For Igcc Power Plants

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Author :
language : en
Publisher:
Release Date : 2008

Ultra Low Nox Catalytic Combustion For Igcc Power Plants written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.

In order to meet DOE's goals of developing low-emissions coal-based power systems, PCI has further developed and adapted it's Rich-Catalytic Lean-burn (RCL{reg_sign}) catalytic reactor to a combustion system operating on syngas as a fuel. The technology offers ultra-low emissions without the cost of exhaust after-treatment, with high efficiency (avoidance of after-treatment losses and reduced diluent requirements), and with catalytically stabilized combustion which extends the lower Btu limit for syngas operation. Tests were performed in PCI's sub-scale high-pressure (10 atm) test rig, using a two-stage (catalytic then gas-phase) combustion process for syngas fuel. In this process, the first stage consists of a fuel-rich mixture reacting on a catalyst with final and excess combustion air used to cool the catalyst. The second stage is a gas-phase combustor, where the air used for cooling the catalyst mixes with the catalytic reactor effluent to provide for final gas-phase burnout and dilution to fuel-lean combustion products. During testing, operating with a simulated Tampa Electric's Polk Power Station syngas, the NOx emissions program goal of less than 0.03 lbs/MMBtu (6 ppm at 15% O2) was met. NOx emissions were generally near 0.01 lbs/MMBtu (2 ppm at 15% O2) (PCI's target) over a range on engine firing temperatures. In addition, low emissions were shown for alternative fuels including high hydrogen content refinery fuel gas and low BTU content Blast Furnace Gas (BFG). For the refinery fuel gas increased resistance to combustor flashback was achieved through preferential consumption of hydrogen in the catalytic bed. In the case of BFG, stable combustion for fuels as low as 88 BTU/ft3 was established and maintained without the need for using co-firing. This was achieved based on the upstream catalytic reaction delivering a hotter (and thus more reactive) product to the flame zone. The PCI catalytic reactor was also shown to be active in ammonia reduction in fuel allowing potential reductions in the burner NOx production. These reductions of NOx emissions and expanded alternative fuel capability make the rich catalytic combustor uniquely situated to provide reductions in capital costs through elimination of requirements for SCR, operating costs through reduction in need for NOx abating dilution, SCR operating costs, and need for co-firing fuels allowing use of lower value but more available fuels, and efficiency of an engine through reduction in dilution flows.

Detailed Analysis And Control Issues Of Homogeneous Charge Compression Ignition Hcci

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Author :
language : en
Publisher:
Release Date : 2002

Detailed Analysis And Control Issues Of Homogeneous Charge Compression Ignition Hcci written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with categories.

Homogeneous charge compression ignition (HCCI) is a new combustion technology that may develop as an alternative to diesel engines with high efficiency and low NOx and particulate matter emissions. This paper describes the HCCI research activities being currently pursued at Lawrence Livermore National Laboratory and at the University of California Berkeley. Current activities include analysis as well as experimental work.

Low Nox High Efficiency Combustion Technologies

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Author : Paul Bakker
language : en
Publisher:
Release Date : 1997

Low Nox High Efficiency Combustion Technologies written by Paul Bakker and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Combustion gases categories.

Cost Effective Control Of Nox With Integrated Ultra Low Nox Burners And Sncr

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Author :
language : en
Publisher:
Release Date : 2001

Cost Effective Control Of Nox With Integrated Ultra Low Nox Burners And Sncr written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with categories.

Coal-fired electric utilities are facing a serious challenge with regards to curbing their NOₓ emissions. At issue are the NOₓ contributions to the acid rain, ground level ozone, and particulate matter formation. Substantial NOₓ control requirements could be imposed under the proposed Ozone Transport Rule, National Ambient Air Quality Standards, and New Source Performance Standards. McDermott Technology, Inc. (MTI), Babcock and Wilcox (B and W), and Fuel Tech are teaming to provide an integrated solution for NOₓ control. The system will be comprised of an ultra low-NOₓ pulverized coal (PC) burner technology plus a urea-based, selective non-catalytic reduction (SNCR) system. This system will be capable of meeting a target emission limit of 0.15 lb NOₓ/106 Btu and target ammonia (NH3) slip level targeted below 5 ppmV for commercial units. Our approach combines the best available combustion and post-combustion NOₓ control technologies. More specifically, B and W's DRB-4Z TM ultra low-NOₓ PC burner technology will be combined with Fuel Tech's NOₓOUT (SNCR) and NOₓOUT Cascade (SNCR/SCR hybrid) systems and jointly evaluated and optimized in a state-of-the-art test facility at MTI. Although the NOₓOUT Cascade (SNCR/SCR hybrid) system will not be tested directly in this program, its potential application for situations that require greater NOₓ reductions will be inferred from other measurements (i.e., SNCR NOₓ removal efficiency plus projected NOₓ reduction by the catalyst based on controlled ammonia slip). Our analysis shows that the integrated ultra low-NOₓ burner and SNCR system has the lowest cost when the burner emissions are 0.25 lb NOₓ/106 Btu or less. At burner NOₓ emission level of 0.20 lb NOₓ/106 Btu, the levelized cost per ton of NOₓ removed is 52% lower than the SCR cost.