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Wednesday, April 29, 2020 | History

2 edition of Energy efficient engine low pressure subsystem flow analysis found in the catalog.

Energy efficient engine low pressure subsystem flow analysis

Energy efficient engine low pressure subsystem flow analysis

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  • 11 Currently reading

Published by National Aeronautics and Space Administration, Lewis Research Center, National Technical Information Service, [distributor in [Cleveland, Ohio], Springfield, VA .
Written in English

    Subjects:
  • Turbofans.,
  • Mathematical models.,
  • Navier-Stokes equation.,
  • Three dimensional models.,
  • Computational fluid dynamics.,
  • Aerodynamic characteristics.,
  • Computerized simulation.,
  • Turbofan engines.,
  • Rotor aerodynamics.,
  • Flow characteristics.

  • Edition Notes

    StatementEdward J. Hall ... [et al.].
    Series[NASA contractor report] -- NASA-CR-1998-206597., NASA contractor report -- NASA CR-206597.
    ContributionsHall, Edward J., Lewis Research Center.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL15541159M

    Current activities include analysis as well as experimental work. On analysis, we have developed two powerful tools: a single zone model and a multi-zone model. The single zone model has proven very successful in predicting start of combustion and providing reasonable estimates for peak cylinder pressure, indicated efficiency and NOX emissions. Understanding Combustion Efficiency Combustion efficiency is a measurement of how well the fuel being burned is being utilized in the combustion process. This is different from the efficiency number produced on the analyzer, which is reflective of the total amount of heat available from the fuel minus the losses from the gasses going up the stack.    Engine Combustion Pressure Analysis Systems By measuring the pressure inside a cylinder combustion chamber while an engine is running, very accurate data of the combustion process can be analyzed. Below is the energy release graph for cylinders 1, 3, 5 on an outboard engine .   A scientist pumping unleaded gasoline into his diesel engine may sound like a typical example of absentmindedness. But in the case of engineers at the Energy Department’s Argonne National Laboratory (ANL), this unconventional idea has some serious potential. A team of researchers at ANL, led by Steve Ciatti, is looking at the possibility of using gasoline to power diesel engines, thereby.


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Energy efficient engine low pressure subsystem flow analysis Download PDF EPUB FB2

Energy Efficient Engine Low Pressure Subsystem Flow Analysis Edward J. Hall, Sean R. Lynn, Nathan J. Heidegger, and Robert A. Delaney Allison Engine Company, Indianapolis, Indiana Prepared under Contract NAS National Aeronautics and. Allison Engine Company, Indianapolis, Indiana Joseph P.

Veres Lewis Research Center, Cleveland, Ohio Energy Efficient Engine Low Pressure Subsystem Aerodynamic Analysis NASA/TM— July National Aeronautics and Space Administration Lewis Research Center Prepared for the 34th Joint Propulsion Conference and Exhibit.

For this project, the Energy Efficient Engine designed by GE Aircraft Engines is being modeled. This engine includes a low-pressure system and a high-pressure system.

An inlet, a fan, a booster stage, a bypass duct, a lobed mixer, a low-pressure turbine, and a jet nozzle comprise the low-pressure subsystem within this engine. The tightly coupled flowFile Size: 69KB.

Books by Language Journal of Law and Education Journal of Economic Education Bibliotheca sacra. Journal of materials engineering. Additional Collections Journal of Management Studies Gas turbine engine geometry and flow simulation of the low-pressure subsystem.

The three-dimensional Navier-Stokes flow code for this LPS simulation is the Advanced Ducted Propeller Analysis Code (ADPAC), and the engine geometry being modeled is the Energy Efficient Engine designed by GE Aircraft Engines.

The three-dimensional flow. The engine geometry is the Energy Efficient Engine (EEE), designed by General Electric Aircraft Engines. The 3D flow model of the LPS provides a "tightly coupled" aerodynamic analysis that captures the quasi-steady interaction effects between the components of the LPS.

The high pressure core engine is simulated with a thermodynamic cycle code. Audio Books & Poetry Community Audio Computers & Technology Music, Arts & Culture News & Public Affairs Non-English Audio Spirituality & Religion.

Librivox Free Audiobook. Podcasts. Featured software All software latest This Just In Old School Emulation MS-DOS Games Historical Software Classic PC Games Software Library. The Energy Efficient Engine high-pressure turbine is a single stage system based on tech-nology advancements in the areas of aerodynamics, structures and materials to achieve high performance, low operating economics and durability commensurate with commercial service requirements.

Low loss performance features combined with a low through-flowFile Size: 5MB. texts All Books All Texts latest This Just In Smithsonian Libraries FEDLINK (US) Genealogy Lincoln Collection.

Books to Borrow. Top Full text of "Energy efficient engine. High pressure compressor detail design report". A novel control method, namely the independent pressure and flow rate control, is proposed to regulate the HFPE's output flow rate at any given load pressure and realize throttle-less fluid control.

Audio Books & Poetry Computers, Technology and Science Music, Full text of "NASA Technical Reports Server (NTRS) Energy efficient engine preliminary design and integration study" See other formats. The feed forward part predicts the required motor speed along with the corresponding spool positions of the two valves, which achieve the minimum required supply pressure (P S).The process is illustrated by the flow chart in Fig.

each actuator with a given motion demand, the VPVC feed forward part computes the required supply pressure with two different assumptions: P SO which is the Cited by: For example, Halila et al.

[1] tested high-pressure turbine of energy efficient engine (E3) at K. Aero-thermal results of a film-cooled vane with a TBC thickness of microns were carried.

An initial appraisal of the engine thermal efficiency at full load capacity indicates a heat-to-power ratio ofrepresenting a thermal efficiency of %, when calculated on the saturated lower calorific value of the fuel = MJ/m 3 (≅ MJ/m 3 dry gross saturated lower calorific value).

When the engine is operating at part load, the gross thermal efficiency falls to. coefficient, low pressure turbines had 4 or 5 stages dependent on the fan bypass ratio.

A typical 7 bypass ratio engine with separate exhausts had a I pressure ratio fan, rotating at m/set ( ft/sec) tip speed.

The fan and low pressure compressor were driven by a loading coef- ficient, low speed, 5 stage low pressure Size: 1MB. high-pressure turbine (HP T) and low pressure turbi ne (LPT). The results sho w that power of the engine flow approaches a maximu m value to be MW in the combustor outlet, while mi ni.

texts All Books All Texts latest This Just In Smithsonian Libraries FEDLINK (US) Genealogy Lincoln Collection. Full text of "Energy efficient engine flight propulsion system preliminary analysis and. Pressure analysis. Fig. 4 presents the evolution of pressure inside the three cylinders as a function of CAD.

The CAD is set to 0 for the firing TDC of high pressure cylinder 1. The maximum pressure reached in both high pressure cylinders is 76 bar.

The maximum pressure of the low pressure cylinder is by: dropped by rising engine speed. Conversely, the maximum brake thermal efficiency is % at engine speed rpm and minimum one is % at engine speed rpm.

Volumetric Efficiency (%) Engine Speed (rpm) Volumetric Efficiency Vs Engine Speed Graph File Size: 1MB.

PCS Energy Management System provides full series power system applications to improve power system management level. Its modular functions can be easily customized to meet the demands of control centers. In addition, the PCS energy management system is extensible for function upgrade to satisfy user demands in the future.

Definition and classification of bottom cycles for exhaust gas energy recovery. According to our previous study, engine exhaust gas contains various forms of energy, and the main characteristic of exhaust gas energy is “low quality” from the viewpoint of converting into mechanical work, due to its high temperature but low lly, engine exhaust gas energy consists of Cited by: In order to evaluate and improve the fuel utilization efficiency of gasoline-powered vehicle, the vehicle energy flow test was conducted on chassis dynamometer under the NEDC of cold starting.

EFFICIENCY OF ENERGY CONVERSION 57 Illustration An electric motor consumes watts (W) of electricity to obtain 90 watts of mechanical power.

Determine its efficiency (E). Solution. Because power is the rate of energy utilization, efficiency can also be expressed as a power ratio. The time units cancel out, and we have Efficiency. Thermal efficiency of 40% is the current goal of micro gas turbine developers.

There exist many important factors in the development of micro gas turbines, such as designing both efficient and cost-effective compressor and turbine, low emission combustor, engine control system, and so on.

Among others, designing a compact and efficient Cited by: A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Recently, precise analysis of energy flow in engines has become necessary to improve fuel economy.

An integrated engine thermal management model, which is introduced in this paper, is suitable for that process. The model consists of six sub-models for thermal mass, coolant, lubricant, heat transfer, friction, and exhaust. The sub-models are coupled to each other and they exchange heat and Cited by: efficiency, the combustion performance of the engine itself must be improved and breakthrough technologies are required to reduce the friction loss of various parts, for example, the piston rings, improve the cycle efficiency, and recover the energy lost in the exhaust gas.

Low-speed, two-stroke marine diesel engines. An engine with a reported lack of power (LOP) condition evidently caused by fuel starvation is being diagnosed. The specified maximum inlet restriction on the primary side of the fuel transfer pump is 7-inches HG and the circuit tests at exactly this value.

work will help GCEP locate promising research opportunities for low-emissions, high-efficiency energy technologies and identify barriers to the large-scale application of these new technologies. Background The term "Energy Systems Analysis" at GCEP is used to describe modeling efforts aimed at: Size: KB.

5 Managed by UT-Battelle for the U.S. Department of Energy Technical Approach • Thermodynamic analysis provides insight to energy usage and barriers to efficiency improvement» Gain better understanding of loss mechanisms and assess trade- offs of loss reduction» Compare potential efficiency benefits of new technologies and approaches to engine design and operation.

• Exhaust availability is low over much of drive cycle operating range, but is high near the engine ’s peak efficiency point • EGR availability is moderate over the drive cycle range, but cuts out at high loads • This analysis guided the experimental and modeling efforts to File Size: 1MB.

energy characteristics of the flow section. energy consumption. energy conversion. energy efficiency. energy efficiency of vehicle.

energy management. energy recovery. energy recovery systems. energy recuperation. high and low pressure system. high compression ratio engine. high duty. high efficiency engines.

Jenbacher gas engines are available in the MW electrical output range for an individual unit. Jenbacher gas engines are renowned for robust performance in challenging conditions and difficult fuel gases.

Jenbacher gas engines are manufactured in the town of Jenbach, Austria in the Tyrol. The Jenbacher gas engine is designed from to run.

@article{osti_, title = {High Efficiency, Clean Combustion}, author = {Stanton, Donald}, abstractNote = {Energy use in trucks has been increasing at a faster rate than that of automobiles within the U.S. transportation sector. According to the Energy Information Administration (EIA) Annual Energy Outlook (AEO), a 23% increase in fuel consumption for the U.S.

heavy duty truck segment is. The base engine for this program was a C15 L series-turbocharged on-highway truck engine with a LPL (low-pressure loop) exhaust recirculation system.

The focus of the program was on the development of high efficiency turbomachinery and a high efficiency turbocompound waste heat recovery system. The Energy Efficient Engine was a program funded by NASA in the s to develop technologies suitable for energy efficient turbofans, its goal was to improve thrust specific fuel consumption by 12% compared to a GE CFC.

Both General Electric and Pratt & Whitney produced turbofans for the program. The GE core featured a high-pressure (HP) ratio ten-stage HP compressor, later used. If this pressure is significantly lower than that required for the rest of the plant, consider isolating the paint booth.

use one air compressor to fulfill the low-pressure requirements of the paint booth and another to fulfill the higher pressure demands of the rest of the plant is often a good idea.

I used a Mazda Protegé with a L engine to test both fuel pressure and flow. In Fig. 4 on p a flow meter capable of measuring fuel pressure as well as total system flow (including the flow of fuel being returned to the tank) was connected inline to the fuel rail.

The invention is for a continuous-combustion, closed-cycle, gas turbine engine with a regenerator and a displacer. It has embodiments that remove heater and cooler interior volumes during gas compression, which enable it to scale well to very large sizes. Low combustion temperatures insure very low emissions.

The displacer levitated by an integral gas bearing and small clearance seal and given Cited by: @article{osti_, title = {Heavy Truck Clean Diesel Cooperative Research Program}, author = {Milam, David}, abstractNote = {This report is the final report for the Department of Energy on the Heavy Truck Engine Program (Contract No.

DE-FCOR) also known as Heavy Truck Clean Diesel (HTCD) Program. Originally, this was scoped to be a $38M project over 5 years, to be 50/50 co. Under which of the following conditions would the thrust output of a turbofan engine be the highest?

A. High outside air temperature, high ambient pressure, high RPM. B. Low outside air temperature, high ambient pressure, high RPM. C. Low outside air temperature, low ambient pressure, high RPM.The objective of this program was to develop and demonstrate a low emission, high thermal efficiency engine system that met EPA heavy-duty on-highway truck emissions requirements (g/bhp-hr NOx, g/bhp-hr HC and g/bhp-hr PM) with a thermal efficiency of 46%.Author: Roland Gravel, Carl Maronde, Chris Gehrke, Scott Fiveland.Metabolomic and Proteomic Analysis of a Clonal Insulin-Producing β-Cell Line (INS-1 /13) Hydrothermal Carbonization as an Energy-Efficient Alternative to Established Drying Technologies for Sewage Sludge: A Feasibility Study on a Laboratory Scale Energy & Fuels