A Gas Turbine-Based Hybrid Vehicle—Part II: Technological and Configuration Issues

2003 ◽  
Vol 125 (3) ◽  
pp. 777-782 ◽  
Author(s):  
R. Capata ◽  
E. Cioffarelli ◽  
E. Sciubba
Keyword(s):  
Gas Turbine ◽  
Research Centre ◽  
Inlet Temperature ◽  
Joint Research ◽  
Hybrid Propulsion ◽  
First Results ◽  
And Performance ◽  
Vehicle Management ◽  
The University ◽  
Joint Research Program

A hybrid propulsion system for a passenger car is described and its preliminary design and performance discussed. A gas turbine operating in a controlled on-off mode, a generator, a battery pack, an inverter, and an electric motor constitute the power system, with an electronic vehicle management unit supervising the system for control and regulation. Road simulation tests are presented, based on standard ECC driving mission cycles. The turbogas performance might be improved adopting ceramic blades, with a possible increase of the TIT (turbine inlet temperature), and a consequent increase of its efficiency. The paper reports on the first results of a study in progress, within a joint research program between the University of Roma 1 “La Sapienza” and the Italian Research Centre of ENEA-Casaccia.

Fuel Influence on Targeted Gas Turbine Combustion Properties: Part I — Detailed Diagnostics

2014 ◽  
Author(s):  
Thomas Mosbach ◽  
Victor Burger ◽  
Barani Gunasekaran
Keyword(s):  
Gas Turbine ◽  
High Speed ◽  
Leading Edge ◽  
Operating Conditions ◽  
Optical Measurements ◽  
Test Facility ◽  
Research Centre ◽  
High Speed Imaging ◽  
Combustion Properties ◽  
First Results

The threshold combustion performance of different fuel formulations under simulated altitude relight conditions were investigated in the altitude relight test facility located at the Rolls-Royce plc. Strategic Research Centre in Derby, UK. The combustor employed was a twin-sector representation of an RQL gas turbine combustor. Eight fuels including conventional crude-derived Jet A-1 kerosene, synthetic paraffinic kerosenes (SPKs), linear paraffinic solvents, aromatic solvents and pure compounds were tested. The combustor was operated at sub-atmospheric air pressure of 41 kPa and air temperature of 265 K. The temperature of all fuels was regulated to 288 K. The combustor operating conditions corresponded to a low stratospheric flight altitude near 9 kilometres. The experimental work at the Rolls-Royce (RR) test-rig consisted of classical relight envelope ignition and extinction tests, and ancillary optical measurements: Simultaneous high-speed imaging of the OH* chemiluminescence and of the soot luminosity was used to visualize both the transient combustion phenomena and the combustion behaviour of the steady burning flames. Flame luminosity spectra were also simultaneously recorded with a spectrometer to obtain information about the different combustion intermediates and about the thermal soot radiation curve. This paper presents first results from the analysis of the weak extinction measurements. Further detailed test fuel results are the subject of a separate complementary paper [1]. It was found in general that the determined weak extinction parameters were not strongly dependent on the fuels investigated, however at the leading edge of the OH* chemiluminescence intensity development in the pre-flame region fuel-related differences were observed.

Status of the Automotive Ceramic Gas Turbine Development Program: Year Five Progress

1996 ◽  
Author(s):  
Tsubura Nisiyama ◽  
Norio Nakazawa ◽  
Masafumi Sasaki ◽  
Masumi Iwai ◽  
Haruo Katagiri ◽  
...  
Keyword(s):  
Gas Turbine ◽  
Development Program ◽  
Ceramic Materials ◽  
Inlet Temperature ◽  
Test Rig ◽  
Target Values ◽  
Ceramic Components ◽  
Combined Test ◽  
And Performance ◽  
The Individual

Petroleum Energy Center of Japan has been carrying out a 7-year development program to prove the potential of an automotive ceramic gas turbine for five years with the support of the Ministry of International Trade and Industry. The ceramic gas turbine now under development is a regenerative single shaft engine. The output is 100kW, and the turbine inlet temperature (TIT) is 1350°C. All the ceramic components are now entering the 1350°C TIT test phase after completing 1200°C TIT evaluation tests, including durability tests, in various types of test rigs. The compressor-turbine combined test rig and the full assembly test rig which is the same as an actual engine and incorporates all the components are now going through 1200°C TIT function and performance evaluation tests. In the near future, we are planning to increase the TIT to 1350°C. In consideration of the current level of high-temperature, long-term strength available from the ceramic materials, we decided to change the rated speed to 100,000 rpm because the initial rated speed of 110,000 rpm, if unchanged, involves considerable risks. Then we reviewed mainly the designs of the compressor and turbine and revised the target values of the individual components to match the specifications that satisfy the target performance of the engine.

Appraisal of Changes in Watercourse Quality as a Result of Sewer Reconstruction

1990 ◽  
Vol 22 (10-11) ◽  
pp. 213-221
Author(s):  
A. D. Parkinson ◽  
P. S. Davis ◽  
A. J. Saul
Keyword(s):  
Computer Modelling ◽  
River Basin Management ◽  
Research Centre ◽  
Combined Sewer Overflows ◽  
Basin Management ◽  
North West ◽  
Combined Sewer ◽  
First Results ◽  
The University ◽  
University Of Manchester

Major sewerage work in Littleborough near Rochdale in North West England resulted in the closure of eight Combined Sewer Overflows and the construction of a new overflow incorporating downstream storage. The paper describes the method, named the CARP procedure, used in setting the frequency and volume of discharge from the new overflow and, therefore, the size of the tank. The effect of the resewerage work on the River Roch is being studied as a collaborative exercise involving the University of Manchester, Water Research Centre and North West Water. This is part of the River Basin Management Programme of the Water Industry of England and Wales (Clifforde et al, 1986). First results indicate that the tank will not operate as frequently as predicted by computer modelling. The discharge from the new Combined Sewer Overflow would not appear to significantly effect the river. This is to be confirmed by further fieldwork.

Marine Gas Turbine Condition Monitoring by Gas Path Electrostatic Detection Techniques

1991 ◽  
Author(s):  
R. A. Cartwright ◽  
C. Fisher
Keyword(s):  
Gas Turbine ◽  
Monitoring System ◽  
Condition Monitoring ◽  
Joint Research ◽  
Detection Techniques ◽  
Debris Particles ◽  
On Line ◽  
Path Condition ◽  
Condition Monitoring System ◽  
And Performance

It was discovered in 1970 that certain gas turbine failures are preceded by an increase in electrostatic activity in the exhaust gases. Joint research by the Royal Aerospace Establishment and Stewart Hughes Limited demonstrated that this characteristic could be used to provide an on-line monitor of the precursors to these failures. An extension of the research applied the theory to the detection of foreign objects ingested into engine inlets. The characteristics and performance of both the Ingested Debris Monitoring System (IDMS) and Engine Distress Monitoring System (EDMS) were examined during a recent 2000 hours endurance trial of a Rolls-Royce Marine Spey gas turbine. The EDMS produced clear evidence of the minor combustor degradation that occurred steadily throughout the trial and also reflected the absence of other engine damage. IDMS data showed that few significant debris particles passed through the engine. Video endoscope and visual inspection confirmed these results. Debris seeding trials further explored the capability of the IDMS to identify the damaging nature of debris and to assess the EDMS signature of consequential engine damage. The paper concludes that electrostatic monitoring at engine inlet and exhaust can identify the ingestion of debris, consequential engine damage and the onset of unexpected distresses caused by blade rubs or combustor degradation. The technique shows potential to provide early warning of certain types of engine damage to Engineer Officers at sea and development into a rugged gas path condition monitoring system continues.

Measurement of Flame Temperature and Emittance in Gas Turbine Combustors

1970 ◽  
Vol 92 (3) ◽  
pp. 310-314 ◽  
Author(s):  
W. E. Hill ◽  
N. R. Dibelius
Keyword(s):  
Gas Turbine ◽  
Measurement Techniques ◽  
Flame Temperature ◽  
Radiant Heat ◽  
Inlet Temperature ◽  
Turbine Inlet Temperature ◽  
Radiant Intensity ◽  
Heat Loading ◽  
And Performance ◽  
Color Pyrometer

The radiation heat load assumes an important role in gas turbine life and performance as firing temperatures and pressures are increased. This first phase of a program for assessing radiant heat loading was mainly concerned with devising measurement techniques. An experimental method for measuring the temperature of luminous flames with a two-color pyrometer and radiant intensity by means of a total radiation pyrometer is described. Emittance data from two combustion liner configurations is included for chamber pressures of from 2 to 7.5 atmospheres over the turbine inlet temperature range of 900 to 1950 deg F.

Thermodynamic modeling and Exergy Analysis of Gas Turbine Cycle for Different Boundary conditions

2015 ◽  
Vol 6 (2) ◽  
pp. 205 ◽  
Author(s):  
Lalatendu Pattanayak
Keyword(s):  
Ambient Temperature ◽  
Combustion Chamber ◽  
Gas Turbine ◽  
Exergy Analysis ◽  
Load Condition ◽  
Exergy Efficiency ◽  
Inlet Temperature ◽  
Exergy Destruction ◽  
And Performance ◽  
Topping Cycle

In this study an exergy analysis of 88.71 MW 13D2 gas turbine (GT) topping cycle is carried out. Exergy analysis based on second law was applied to the gas cycle and individual components through a modeling approach. The analysis shows that the highest exergy destruction occurs in the combustion chamber (CC). In addition, the effects of the gas turbine load and performance variations with ambient temperature, compression ratio and turbine inlet temperature (TIT) are investigated to analyse the change in system behavior. The analysis shows that the gas turbine is significantly affected by the ambient temperature which leads to a decrease in power output. The results of the load variation of the gas turbine show that a reduction in gas turbine load results in a decrease in the exergy efficiency of the cycle as well as all the components. The compressor has the largest exergy efficiency of 92.84% compared to the other component of the GT and combustion chamber is the highest source of exergy destruction of 109.89 MW at 100 % load condition. With increase in ambient temperature both exergy destruction rate and exergy efficiency decreases.

Conceptual Design and Performance Analysis of SOFC/Micro Gas Turbine Hybrid Distributed Energy System

2015 ◽  
Vol 12 (3) ◽  
Author(s):  
Zheng Dang ◽  
Hua Zhao ◽  
Guang Xi
Keyword(s):  
Performance Analysis ◽  
Gas Turbine ◽  
Hybrid System ◽  
Pressure Ratio ◽  
Energy System ◽  
Inlet Temperature ◽  
Reaction Heat ◽  
Micro Gas Turbine ◽  
Distributed Energy System ◽  
And Performance

A numerical model has been developed for the performance analysis of solid oxide fuel cell (SOFC)/micro gas turbine (MGT) hybrid systems with prereforming of natural gas, in which a quasi two-dimensional model has been built up to simulate the cell electrochemical reaction, heat and mass transfer within tubular SOFC. The developed model can be used not only to predict the overall performance of the SOFC/MGT hybrid system but also to reveal the nonuniform temperature distribution within SOFC unit. The effects of turbine inlet temperature (TIT) and pressure ratio (PR) on the performance of the hybrid system have been investigated. The results show that selecting smaller TIT or PR value will lead to relative higher system efficiency and lower CO2 emission ratio; however, this will raise the risk to destroy SOFC beyond the limitation temperature of electrolyte.

scholarly journals EMPLOYMENT IN VS. EDUCATION FOR THE BIOECONOMY

2018 ◽  
Author(s):  
Nina DREJERSKA
Keyword(s):  
Summer School ◽  
Tertiary Education ◽  
Life Sciences ◽  
Subject Area ◽  
Research Centre ◽  
Joint Research ◽  
Member States ◽  
Eu Member States ◽  
Polish Experience ◽  
The University

A number of employees is one of the basic indicators applied for identification of the economic relevance of an industry or an economic sector. Referring to nearly 18.6 million people employed in the 28 EU Member States within the bioeconomy in 2014, it can be stated that this a an economic sphere of significant importance in the European economy. The main aims of the study are to identify a scale of employment in the bioeconomy sector across EU Member States as well as to investigate tertiary education in bioeconomy based on the Polish experience in the Bioeconomy subject area group within the Euroleague for Life Sciences (ELLS). Data used included: (1) the data portal of agro-economics modelling – DataM of the Joint Research Centre of the European Commission, (2) CAWI research among students of WULS-SGGW on their attitudes to the bioeconomy, (3) feedback of participants of the first summer school in bioeconomy coordinated by WULS-SGGW. Research results display that the majority of Polish students did not meet the term of bioeconomy generally as well as at the university. There is also one very important students’ comment which can describe their attitude: students of economic disciplines are not very much interested as they think that bioeconomy focuses on life sciences (bio) so it is not appropriate for them; students of different fields of life sciences are not very keen to study bioeconomy as according to them it focuses on economy (as in the name itself).

scholarly journals University Impact on Regional Development in the Context of Smart Specialisation

2021 ◽  
Vol 59 (1) ◽  
Author(s):  
Yevheniia Polishchuk ◽  
Anna Kornyliuk ◽  
Alla Ivashchenko ◽  
Yuriy Danko ◽  
Oleh Pasko
Keyword(s):  
Regional Development ◽  
Academic Entrepreneurship ◽  
Innovation Policy ◽  
Research Centre ◽  
Structured Interviews ◽  
Regional Innovation ◽  
Joint Research ◽  
Smart Specialisation ◽  
The University ◽  
The Impact

Regional development on the basis of smart specialisation entails the involvement of stakeholders in innovation processes such as business, public organisations, local government and academic sectors. Universities are the drivers of a region’s development because they have a broad research base. Using the methodology of the Joint Research Centre (European Commission), the impact of Sumy National Agrarian University on the development of the Sumy Region was assessed by such criteria as its cooperation with stakeholders, innovative infrastructure of the university, development of academic entrepreneurship, and its role in developing the region. The method of collecting qualitative data involved conducting structured interviews with the university administration and relevant departments. The collected data were analysed by content analysis. As a result of testing the methodology, its high level of applicability was noted in the Ukrainian academic space, outside the EU. It is recommended to use the method of assessing the impact of the university on the development of the region during the entrepreneurial discovery process, which follows the definition of priorities for the development of the region in the context of smart specialisation. The recommendations were given on the revival of cooperation with stakeholders, possible ways of developing academic entrepreneurship and building innovation infrastructure. The results of the research presented in this article may be used in university promotion within the region and the country as well in the context of smart specialisation. Policy makers may use the research results in order to provide regional innovation policy.

An integrated methodology for supporting the development and the performance evaluation of academic spin-offs

2019 ◽  
Vol 24 (1) ◽  
pp. 69-89
Author(s):  
Gianpaolo Iazzolino ◽  
Domenico Greco ◽  
Saverino Verteramo ◽  
Andrea Luca Attanasio ◽  
Gilda Carravetta ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Qualitative Assessment ◽  
Content Type ◽  
Integrated Methodology ◽  
Start Up ◽  
First Results ◽  
Risk Areas ◽  
And Performance ◽  
The Right ◽  
The University

Purpose This paper aims to propose an integrated methodology for evaluating academic spin-offs (ASOs) for supporting both the development phase and performance evaluation. The ASOs have peculiar characteristics compared to other start-up companies and the debate on their evaluation is still open. Design/methodology/approach The proposed methodology, adopting a lean approach, faces the typical problems that characterize the growth of an ASO: the excessive attention to the technological aspects with respect to the commercial and managerial ones; and the need for evaluation systems that try to evaluate all risk areas and to highlight any misalignment. The methodology was built also starting from the results of an Erasmus + research project, co-funded by the European Commission, called spin-off lean acceleration. Findings The methodology proposes to monitor the main risk areas (market, technological, implementation, governance and financial). For each of these areas, at first, a framework and a checklist are proposed for supporting the qualitative assessment of the potential of each areas. In the second part, a set of metrics for monitoring the performances and to understand if the spinoff is developing in the right direction is proposed. Moreover, the methodology was applied to the spin-offs at the University of Calabria (Italy), and the paper reports the first results obtained. Originality/value A new canvas model (lean acceleration canvas), more specific and suited to the context of ASOs, was developed and tested. A lean approach has been adopted also for understanding the weakness of traditional methods. The proposed methodology could be used by the technology transfer offices in their institutional activity of supporting ASOs.

Sign in / Sign up

Export Citation Format

Share Document