Additional Engine Testing of an Advanced Alloy for Microturbine Primary Surface Recuperators

Volume 5: Marine; Microturbines and Small Turbomachinery; Oil and Gas Applications; Structures and Dynamics, Parts A and B ◽

10.1115/gt2006-90068 ◽

2006 ◽

Cited By ~ 5

Author(s):

Wendy J. Matthews

Keyword(s):

Operating Temperature ◽

Engine Test ◽

Test Results ◽

Preliminary Estimate ◽

Parabolic Model ◽

Scale Growth ◽

Temperature Oxide ◽

Model Engine ◽

Engine Testing ◽

Elemental Depletion

HAYNES ® alloy HR-120 ® is being evaluated as a replacement for type 347 stainless steel for use in Microturbine Primary Surface Recuperators. The material has been characterized after being subjected to both steady-state and cyclic engine exposure in a Capstone C60 MicroTurbine™ operating at 100°F above the normal operating temperature. Oxide scale growth and elemental depletion has been analyzed and documented after 1,800 and 2,500 hours of exposure. A preliminary estimate of the remaining usable oxidation life has been made using a simplified parabolic model. Engine test results indicate that HR-120 has improved oxidation resistance and elemental stability.

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Engine Testing of an Advanced Alloy for Microturbine Primary Surface Recuperators

Volume 1: Turbo Expo 2005 ◽

10.1115/gt2005-68781 ◽

2005 ◽

Cited By ~ 2

Author(s):

Wendy J. Matthews ◽

Terry Bartel ◽

Dwaine L. Klarstrom ◽

Larry R. Walker

Keyword(s):

Steady State ◽

Oxide Scale ◽

Engine Test ◽

Test Results ◽

Protective Oxide ◽

Protective Oxide Scale ◽

Cyclic Operation ◽

Engine Testing

HAYNES® alloy HR-120® has been identified as a potential alloy for the manufacture of primary surface recuperators. Primary surface recuperator components have been manufactured from HR-120, and actual microturbine testing is on going. Initial engine test results indicate the formation of a protective oxide scale that is resistant to both steady-state and cyclic operation with no evidence of accelerated attack, and which is likely to meet or exceed the desired 80,000 hour component life.

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Comparison and Synthesis of Performance and Aerodynamic Modeling of a Pass-Off Turbofan Engine Test Cell

Volume 1: Aircraft Engine; Fans and Blowers; Marine ◽

10.1115/gt2015-43525 ◽

2015 ◽

Author(s):

Martin Marx ◽

Michael Kotulla ◽

André Kando ◽

Stephan Staudacher

Keyword(s):

Research Effort ◽

Engine Performance ◽

Cell System ◽

Performance Model ◽

Test Cell ◽

Test Facility ◽

Engine Test ◽

Combined System ◽

Installation Effects ◽

Engine Testing

To ensure the quality standards in engine testing, a growing research effort is put into the modeling of full engine test cell systems. A detailed understanding of the performance of the combined system, engine and test cell, is necessary e.g. to assess test cell modifications or to identify the influence of test cell installation effects on engine performance. This study aims to give solutions on how such a combined engine and test cell system can be effectively modeled and validated in the light of maximized test cell observability with minimum instrumentation and computational requirements. An aero-thermodynamic performance model and a CFD model are created for the Fan-Engine Pass-Off Test Facility at MTU Maintenance Berlin-Brandenburg GmbH, representing a W-shape configuration, indoor Fan-Engine test cell. Both models are adjusted and validated against each other and against test cell instrumentation. A fast-computing performance model is delivering global parameters, whereas a highly-detailed aerodynamic simulation is established for modeling component characteristics. A multi-disciplinary synthesis of both approaches can be used to optimize each of the specific models by calibration, optimized boundary conditions etc. This will result in optimized models, which, in combination, can be used to assess the respective design and operational requirements.

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Elimination of Tight Emulsions

10.2118/207483-ms ◽

2021 ◽

Author(s):

Haakon Ellingsen ◽

Hikmat Jaouhar ◽

Andreas Hannisdal

Keyword(s):

Crude Oil ◽

Separation Efficiency ◽

Operating Temperature ◽

Oil Fields ◽

Water Removal ◽

Water Production ◽

Test Results ◽

Electrical Field ◽

High Electrical Field ◽

Performance Specifications

Abstract Maturing oil fields can pose a severe challenge for separation of oil and water. Increasing water production and tie in of new fields into existing infrastructure may result in separators struggling to meet performance specifications. Operational challenges are particularly experienced when the facilities are processing cold feedstock and tight emulsions. Typical solutions for overcoming separation challenges would be increasing operating temperature, injecting an increased quantity of demulsifier chemicals, or installing new larger separators. These alternatives may not be economically attractive or feasible for other reasons. The ability to successfully operate existing plants with tight and water-rich emulsions without incurring significant added operating expenditure is perceived as a major advantage. This paper will share the results from testing on a separator operating with Flotta Gold crude oil. The oil is known to produce particularly tight emulsions at low temperatures. The ePack technology has been tested to study its capability of separating water and crude oil from tight emulsions by means of electrical forces. The force generated by the high electrical field can break even tight emulsions, and the test results shown have proven the ability to go from very low separation efficiency without the ePack, to more than 90% water removal with the ePack turned on. Testing with residence times of up to 19 minutes without the ePack was not able to surpass the performance of a three minutes residence time with the ePack energized.

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Nonsteady Aerodynamics of the Comprex Supercharger

ASME 1958 Gas Turbine Power Conference and Exhibit ◽

10.1115/58-gtp-15 ◽

1958 ◽

Cited By ~ 2

Author(s):

Hans U. Burri

Keyword(s):

Method Of Characteristics ◽

Engine Performance ◽

Engine Test ◽

Nonsteady Flow ◽

Test Results ◽

One Dimensional ◽

Acceptable Accuracy ◽

The Method Of Characteristics ◽

Performance Point

A brief outline is given of the method of characteristics for the analysis of one-dimensional nonsteady flow. Two typical types of experiments are discussed which indicate the degree of accuracy possible if this method is applied to machinery like the Comprex supercharger. As an example, a typical analysis is presented for one particular engine-performance point. It is possible to duplicate engine test results with acceptable accuracy.

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Stress Mapping of a Low Pressure Compressor for an Advanced Turbojet Engine

Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; Process Industries; Technology Resources ◽

10.1115/84-gt-99 ◽

1984 ◽

Author(s):

H. R. Bankhead ◽

C. E. Meece

Keyword(s):

Low Pressure ◽

The United States ◽

Test Results ◽

Simulated Altitude ◽

Turbojet Engine ◽

Light Probe ◽

Stress Mapping ◽

Engine Testing ◽

Development Center ◽

Pressure Compressor

Vibratory stress characteristics of the low pressure compressor in the Pratt & Whitney Aircraft PW1120 turbojet engine recently have been evaluated during full-scale engine testing at the United States Air Force’s Arnold Engineering Development Center. A description is presented of the approach used to evaluate the vibratory characteristics of the new three stage low pressure compressor. Results are presented showing the effects of simulated altitude conditions, inlet pressure distortion, and off-schedule variable vane operation. Strain gage data is compared to case-mounted light probe data, and the levels of system damping and mistuning are discussed. Predicted vibratory response is compared to test results showing the new compressor to be free of destructive vibration.

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Liquid Methane as a Motor Fuel

Proceedings of the Institution of Mechanical Engineers Automobile Division ◽

10.1243/pime_auto_1949_000_017_02 ◽

1949 ◽

Vol 3 (1) ◽

pp. 155-166 ◽

Cited By ~ 2

Author(s):

M. Pearce

Keyword(s):

Fuel Economy ◽

Chemical Engineering ◽

Motor Fuel ◽

Imperial College ◽

Engine Test ◽

Test Results ◽

Fuel System ◽

Long Distance ◽

Factors Affecting ◽

Liquid Methane

A comprehensive programme of work on the development of liquid methane as a motor fuel was started in 1938 in the Department of Chemical Engineering and Applied Chemistry, Imperial College. This paper describes some of the work concerned with the actual utilization on the vehicle. The factors affecting power output and fuel economy are discussed, and engine test results obtained at the laboratories of Messrs. Ricardo and Company, Engineers (1927), Ltd., are presented. Work on the development of a suitable vacuum-insulated fuel tank is described with particular reference to “neck losses”. The vehicle fuel system and its components as finally developed are described, and the results of long-distance service trials of a motor ‘bus with the normal and a higher compression ratio are given. A disadvantage of liquid methane with the fuel system used so far is the loss of fuel by evaporation; the paper ends with a description of fuel systems which enable this loss to be virtually eliminated.

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