scholarly journals Sodium Heat Engine Development Program

1992 ◽  
Author(s):  
J.P. Singh ◽  
D.S. Kupperman ◽  
S. Majumdar ◽  
S. Dorris ◽  
N. Gopalsami ◽  
...  
Keyword(s):  
Heat Engine ◽  
Development Program ◽  
Engine Development

scholarly journals Sodium Heat Engine Development Program. Phase 1, Final report

1992 ◽  
Author(s):  
J.P. Singh ◽  
D.S. Kupperman ◽  
S. Majumdar ◽  
S. Dorris ◽  
N. Gopalsami ◽  
...  
Keyword(s):  
Phase 1 ◽  
Heat Engine ◽  
Development Program ◽  
Final Report ◽  
Engine Development

Development of a High-Output Dual-Fuel Engine

1993 ◽  
Vol 115 (4) ◽  
pp. 728-733 ◽  
Author(s):  
P. R. Danyluk
Keyword(s):  
Fuel Consumption ◽  
Power Output ◽  
Thermal Efficiency ◽  
Development Program ◽  
Dual Fuel ◽  
Initial Development ◽  
Engine Development ◽  
High Output

This paper presents the results of a new dual-fuel engine development program. The engine is the largest commercially available in terms of power output (650 hp/cyl) and features very low emissions (1 g/hp-hr NOx) and excellent fuel consumption (43 percent thermal efficiency). A two-cylinder turbocharged prototype was designed and built for the initial development. Results from testing on 18-cylinder production versions are also reported.

PBMR Technology Development Projects at Stellenbosch University, South Africa

2008 ◽  
Author(s):  
R. T. Dobson
Keyword(s):  
Technology Development ◽  
Cooling System ◽  
Heat Engine ◽  
Organic Rankine Cycle ◽  
Development Program ◽  
Heat Pipes ◽  
Development Projects ◽  
Fuel Temperature ◽  
Two Phase ◽  
Research Activities

PBMR has initiated a research and development program wherein a network of expertise relating to PBMR-specific technology is to be established. As a result of this initiative four specific PBMR sponsored technology development projects have been initiated at Stellenbosch University. The work done and still to be done towards these projects will be presented. The first project relates to the characterization of the flow dynamics of particles (ions, atoms and clusters) in a high pressure and velocity (9 MPa and 120 m/s) stream of helium due to various body-force fields (magnetic, electric and centrifugal); the ultimate objective of this project is to develop a graphite dust and particle scrubbing system. The second project relates to an entirely passive reactor cooling system (RCCS) using thermosyphon-type heat pipes with no pumps and active controls. The third project relates to the fuel temperature measurement under normal and loss of coolant pressure conditions using a fibre-optic Bragg-grating method. A fourth project relates to energy efficiency improvement by the conversion of waste, decay, after and residual heat into electrical power. This project makes use of two-phase closed loop thermosyphon-type heat pipes to transport the heat to an external heat engine, such as free piston type Stirling engine or organic Rankine cycle system. The research activities needed to meet the objectives of the above projects will be presented and discussed in this paper.

Rotary Expander Engine Development Program

1978 ◽  
Author(s):  
Giovanni J. Silvestri ◽  
Robert Meunier ◽  
Daniel A. Bowlus ◽  
George A. Brown
Keyword(s):  
Development Program ◽  
Engine Development

Friction Under Transient Mixed Regime of Lubrication in Conjunction of an Elastic Ring Within a Real Cylinder

2012 ◽  
Author(s):  
C. E. Baker ◽  
S. Theodossiades ◽  
H. Rahnejat
Keyword(s):  
Combustion Engine ◽  
Fuel Efficiency ◽  
Development Program ◽  
Force Balance ◽  
Implicit Assumption ◽  
Cross Sectional ◽  
Compression Ring ◽  
Mixed Regime ◽  
Engine Development

Fuel efficiency is now the over-riding engine development objective. With approximately 50–60% of the input fuel energy in an internal combustion engine lost through thermal and mechanical inefficiencies, friction has been targeted as the arch nemesis in any engine development program. A significant portion of the parasitic frictional losses is due to the top compression ring. This suggests that optimization of tribological performance of the compression ring conjunction warrants much more attention that it has been hitherto afforded. Studies reported thus far take into account ring-bore conformance, based on static fitment of the ring within an out-of-round bore, whose out-of-circularity is affected by manufacturing processes, surface treatment and assembly. The various static fitment analyses presume quasi-static equilibrium between ring tension and gas pressure loading with the generated conjunctional pressures. This is an implicit assumption of ring rigidity whilst in situ, which is in fact not the case in practice. The transient nature of combustion variation means that mere static or quasi-static force balance is inappropriate. Furthermore, the bore is not a right circular cylinder. Thus, its radial cross-sectional out-of-roundness and its axial variation introduce further transience in the ring-bore conformance. Consequently, the net force applied to the ring induces its modal behaviour, which accounts for its instantaneous in situ shape within the bore. These considerations are not taken into account in the often idealized ring-bore tribology. The paper provides transient solution of ring-bore conjunction, when subjected to ring in-plane modal behavior, when the conjunction is subjected to a mixed regime of lubrication, comprising hydrodynamic viscous action and boundary interactions.

The PW1120: A High Performance, Low Risk F100 Derivative

1984 ◽  
Author(s):  
M. A. Zipkin
Keyword(s):  
High Performance ◽  
Development Program ◽  
Turbofan Engine ◽  
Initial Application ◽  
Operational Characteristics ◽  
Testing Performance ◽  
Design Characteristics ◽  
Engine Testing ◽  
A Company ◽  
Engine Development

The PW1120 engine is a turbojet derivative of the F100 turbofan engine that has accumulated more than 1.9 million flight hours in F-15 and F-16 fighters throughout the free world. Pratt & Whitney Aircraft (P&WA) initiated design and development of the PW1120 as a company sponsored military engine development program in 1980 and the program has progressed on schedule through more than 1,000 hours of development engine testing and Flight Clearance Testing. Performance goals and operational characteristics of the PW1120 engine at both sea level and altitude simulated flight conditions have been successfully demonstrated. This paper addresses the design characteristics of the PW1120 engine and its commonality with the F100 engine, and discusses those commonality benefits in terms of reliability, maintainability, safety, and logistics support. Development program plans, achievements, and applications for the PW1120 engine are also discussed. Flight Clearance of the PW1120 will be completed during the second half of 1984 with full qualification in late 1986. Production will start in early 1987. Initial application is in the Israel Air Force’s new indigenous fighter, the Lavi.

scholarly journals T406 Engine Development Program

1990 ◽  
Author(s):  
John R. Arvin ◽  
Mark E. Bowman
Keyword(s):  
Development Program ◽  
Growth Potential ◽  
Future Application ◽  
Turbine Engine ◽  
Starting Point ◽  
Engine Development

The T406 engine development is discussed. The T406 is a 6000 horsepower class turboshaft, front drive, free turbine engine being developed under U.S. Navy contract to power the V-22 Osprey V/STOL aircraft. The V-22 is a subsonic airplane which uses tiltrotor technology to achieve V/STOL capabilities. The engine FSD program began in May of 1986 and will continue until May 1992. A comprehensive engine description is given. The power/engine weight capability and growth potential make this engine the starting point for many future application.

scholarly journals Overview of Gas Turbine Coal-Fired Combustor Concepts

1989 ◽  
Author(s):  
Edward L. Parsons ◽  
John W. Byam
Keyword(s):  
Gas Turbine ◽  
Heat Engine ◽  
Development Program ◽  
Department Of Energy ◽  
Primary Concern ◽  
Gas Turbine Combustor ◽  
Heat Engines ◽  
Program Objective ◽  
Conducting Research ◽  
Environmentally Sound

Since 1982, the Department of Energy (DOE), through the Morgantown Energy Technology Center (METC), has been conducting research for the purpose of verifying the feasibility of using coal fuels in heat engine applications. The heat engines of primary concern are the gas turbine and the diesel engine. The overall program objective is to develop the technology base for an environmentally sound, integrated heat engine system which will produce cost-competitive energy from coal. During the past 2 years the major emphasis of the gas turbine development program has been the coal-fueled combustors. This paper will review the current progress on coal-fueled gas turbine combustor development.

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