liu.seSearch for publications in DiVA
Change search
Refine search result
1 - 12 of 12
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Rows per page
  • 5
  • 10
  • 20
  • 50
  • 100
  • 250
Sort
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
Select
The maximal number of hits you can export is 250. When you want to export more records please use the Create feeds function.
  • 1.
    Bacos, M P
    et al.
    Office National d'Etudes et de Recherches Aérospatiales, France.
    Josso, P
    Office National d'Etudes et de Recherches Aérospatiales, France.
    Vialas, N
    CIRIMAT––ENSIACET-INPT, Toulouse, France.
    Poquillon, D
    CIRIMAT––ENSIACET-INPT, Toulouse, France.
    Pieraagi, B
    CIRIMAT––ENSIACET-INPT, Toulouse, France.
    Monceau, D
    CIRIMAT––ENSIACET-INPT, Toulouse, France.
    Nicholls, J R
    Cranfield University, United Kingdom.
    Simms, N
    Cranfield University, United Kingdom.
    Encinas-Oropesa, A
    Cranfield University, United Kingdom.
    Ericsson, Torsten
    Linköping University, Department of Mechanical Engineering, Engineering Materials. Linköping University, The Institute of Technology.
    Stekovic, Svjetlana
    Linköping University, Department of Mechanical Engineering, Engineering Materials. Linköping University, The Institute of Technology.
    ALLBATROS advanced long life blade turbine coating systems2004In: Applied Thermal Engineering, ISSN 1359-4311, E-ISSN 1873-5606, Vol. 24, no 11-12, p. 1745-1753Article in journal (Refereed)
    Abstract [en]

    The scientific and technological objectives of this program are to increase the efficiency, reliability and maintainability of industrial gas turbine blades and vanes by

    • developing coatings that can warrant a 50 000 h life, i.e. twice that of the usual life, of the hot components (800–1100 °C) even with the use of renewable fuels such as biomass gas or recovery incinerator gas i.e. low-grade fuels with high pollutant levels,

    • characterising advanced existing coatings to assess lifetime and performance of coatings and coated materials,

    • providing material coating data and design criteria to use coating as a design element,

    • increasing the fundamental understanding of the behaviour of coated materials, their degradation, fracture mechanisms and engineering because of the strong need for a mechanism-based modelling of durability.

    These programmes permitted the selection of two reference coatings and the development of two innovative coatings. Concurrently work has been done in order to develop corrosion, oxidation and thermo-mechanical property models. Correlations between coatings development, experimental results and calculations will be discussed.

  • 2.
    Bengtsson, Cecilia
    et al.
    Department of Heat and Power Technology, Chalmers University of Technology, Göteborg, Sweden.
    Karlsson, Magnus
    Linköping University, Department of Management and Engineering, Energy Systems. Linköping University, The Institute of Technology.
    Berntsson, Thore
    Department of Heat and Power Technology, Chalmers University of Technology, Göteborg, Sweden.
    Söderström, Mats
    Linköping University, Department of Management and Engineering, Energy Systems. Linköping University, The Institute of Technology.
    Co-ordination of pinch technology and the MIND method: applied to a Swedish board mill2002In: Applied Thermal Engineering, ISSN 1359-4311, E-ISSN 1873-5606, Vol. 22, no 2, p. 133-144Article in journal (Refereed)
    Abstract [en]

    By combining the pinch technology and the MIND method, it is possible to identify beneficial and energy-efficient measures in a complex industrial energy system. By tackling a problem on the two different aggregation levels, the result is thoroughly evaluated and durable measures are achieved. The strength of the combination of methods is elucidated in a case study where a Scandinavian pulp and paper mill is analysed. The studied problem concerns pre-evaporation of effluents in a board mill using excess heat. Different alternatives are evaluated, taking into account economic, technical and practicable constraints. The results show that it is cost-effective to pre-evaporate the effluent using excess heat in the studied mill.

  • 3.
    Gebremedhin, Alemayehu
    Linköping University, The Institute of Technology. Linköping University, Department of Management and Engineering, Energy Systems.
    The role of a paper mill in a merged district heating system2003In: Applied Thermal Engineering, ISSN 1359-4311, E-ISSN 1873-5606, Vol. 23, no 6, p. 769-778Article in journal (Refereed)
    Abstract [en]

    Recent studies have shown that there is great potential benefit in utilities collaborating around heat supply. Analyses based on an extended system boundary clarify the advantage of mutual co-operation in the district heating markets. The purpose of this study is to show how far a local paper mill affects the degree of co-operation between two utilities. Current and future electricity prices and existing and potential plants are considered in the different scenarios in the study. The results in all the scenarios clearly show that the paper mill plays an active role in an integrated heat supply system. The scenario where co-operation, new plants and future electricity prices are considered, gives the lowest total system cost. A new back pressure turbine with a higher electricity-to-heat output ratio in combination with high trade prices promotes increased electricity and heat generation in the co-generation plant. The proportion of combined heat and power in district heating would increase if co-operation between the players were encouraged. ⌐ 2003 Elsevier Science Ltd. All rights reserved.

  • 4.
    Gustafsson, Stig-Inge
    Linköping University, Department of Mechanical Engineering, Energy Systems. Linköping University, The Institute of Technology.
    Economic benefits from load management in a carpentry factory1996In: Applied Thermal Engineering, ISSN 1359-4311, E-ISSN 1873-5606, Vol. 16, no 10, p. 829-834Article in journal (Refereed)
    Abstract [en]

    As a result of a National Referendum and a subsequent parliament decision Sweden will phase out its nuclear power stations before the year 2010. This source of electricity accounts for about half the total electricity usage and therefore other sources must be constructed, or the country must use less electricity. One way to accomplish this, according to economic theory, is to increase the price of electricity, and we will probably be subject to such actions, at least if there is a risk of a shortage of electricity. Hitherto, most interest for saving energy has been emphasised on space and domestic hot water heating in buildings. The major part of electricity, however, is used in industry, and is therefore worth studying in more detail. One small carpentry plant which manufactures wooden staircases and fibreboard panels for ceilings has been studied. Using monitored data for 1 year of their electricity usage and costs, the amount of money which could be saved by the owner of the factory, if different load management measures had been applied, has been calculated. Thus it was possible to find the maximum cost for equipment that can turn off some processes, such as timber dryers, for short periods.

  • 5.
    Gustafsson, Stig-Inge
    Linköping University, Department of Management and Engineering, Energy Systems. Linköping University, The Institute of Technology.
    Hot Water Heat Accumulators in Single-Family Houses1992In: Applied Thermal Engineering, ISSN 1359-4311, E-ISSN 1873-5606, Vol. 12, no 4, p. 303-310Article in journal (Refereed)
    Abstract [en]

    In Sweden, as in many other countries, there is a significant difference in electricity demand between day and night. In order to encourage the end use consumer to use less electricity during peak situations, time-of-use tariffs have become more common. The price differs from about 0.8 to 0.35 SEK/kWh, taxation included. (1ECU equals about 7 SEK.) If some of the electricity under the high price period, which falls between 0600 and 2200 during November to March, could be transferred to the low price hours, the electricity bill could be reduced. In Sweden it is common to use electricity for space and hot water heating, at least in single-family houses. By use of a hot water accumulator the need for heat could be produced during the cheap hours and the storage could be discharged when the high price hours occur. This paper describes the electricity use for hot water and space heating in a single-family house sited in Linköping, Sweden, where extensive monitoring has been utilized during 1987. Some 30 values for temperatures and electricity demands have been measured each hour, or sometimes even for shorter time intervals. These monitored data have been the base for examining if a water accumulator could be of interest for the proprietor of the building, i.e. if the cost for the accumulator is less than the money saved by the reduced electricity cost.

  • 6.
    Gustafsson, Stig-Inge
    Linköping University, Department of Mechanical Engineering, Energy Systems. Linköping University, The Institute of Technology.
    Municipal thermal and electricity loads: A case study in Linköping1998In: Applied Thermal Engineering, ISSN 1359-4311, E-ISSN 1873-5606, Vol. 18, no 5, p. 257-263Article in journal (Refereed)
    Abstract [en]

    Linear programming models used for optimisation of various energy systems have received increased interest during the last ten years. One reason for this is the use of personal computers. Models with thousands of variables and constraints can now be rapidly optimised. If integers are introduced, which are necessary when increments or steps in cost functions are part of the model, the computing power is of even higher interest. However, many scientific authors do not discuss in detail how the model is designed and what basic data lie behind this design. This paper presents an attempt to study municipal thermal and electricity loads, and further how to divide data for one year into useful segments for linear and mixed integer programming purposes

  • 7.
    Gustafsson, Stig-Inge
    Linköping University, The Institute of Technology. Linköping University, Department of Management and Engineering, Energy Systems.
    Optimization and simulation of building energy systems2000In: Applied Thermal Engineering, ISSN 1359-4311, E-ISSN 1873-5606, Vol. 20, no 18, p. 1731-1741Article in journal (Refereed)
    Abstract [en]

    The Mixed Integer Linear Programming (MILP) technique is a useful tool for the optimization of energy systems. However, the introduction of integers in linear models results in a severe drawback because the ranging process is no longer available. Therefore, it is not possible to study what happens to the solution if input data are changed. In this paper, we compare a MILP model of a building with a simulation model of an identical case. Both models describe a building with a number of possible retrofits. Using the MILP technique, the optimal retrofit strategy is calculated, after which certain input data are changed. The optimization results in the lowest possible Life-Cycle Cost (LCC) of the building, and the paper describes how much the LCC will change if the property owner chooses other solutions. An increase in a particular data value may cause the LCC to increase or decrease. It may also be unchanged. Only a few data reduce the LCC when their values are increased.

  • 8.
    Gustafsson, Stig-Inge
    et al.
    Linköping University, Department of Management and Engineering, Energy Systems. Linköping University, The Institute of Technology.
    Karlsson, Björn G
    Linköping University, Department of Management and Engineering, Energy Systems. Linköping University, The Institute of Technology.
    Linear Programming Optimization in CHP Networks1991In: Applied Thermal Engineering, ISSN 1359-4311, E-ISSN 1873-5606, Vol. 11, no 4, p. 231-238Article in journal (Refereed)
    Abstract [en]

    This paper shows how to simulate a CHP network (CHP = Combined Heat and Power) using the method of linear programming. This method makes it possible to optimize the mathematical model and subsequently find the very best combination of electricity production, electricity purchase and heat production in a district heating system. The optimal solution in the model is characterized by the lowest possible operating cost for year. The paper shows the design of the mathermatical model and furthermore a case study is presented using the district heating net in Malmö, Sweden, as an example.

  • 9.
    Gustafsson, Stig-Inge
    et al.
    Linköping University, Department of Management and Engineering, Energy Systems. Linköping University, The Institute of Technology.
    Karlsson, Björn G
    Linköping University, Department of Management and Engineering, Energy Systems. Linköping University, The Institute of Technology.
    Sjöholm, Bertil H.
    Linköping University, Department of Management and Engineering, Energy Systems. Linköping University, The Institute of Technology.
    Differential Rates for District Heating and the Influence on the Optimal Retrofit Strategy for Multi-Family Buildings1987In: Applied Thermal Engineering, ISSN 1359-4311, E-ISSN 1873-5606, Vol. 7, no 4, p. 337-341Article in journal (Refereed)
    Abstract [en]

    When renovating existing multi-family buildings it is very important to implement the best retrofit strategy possible in order to minimize the remaining life-cycle cost for the building. If the building is heated with district heating this strategy of course changes due to the energy rate used by the utility. It is also very important for the utility that the consumer is encouraged to save energy when there is a need for it, i.e. during peak load conditions. Our paper shows that an accurate cost differential rate provides all these facilities.

  • 10.
    Heidari, Tari Mehrdad
    et al.
    Linköping University, The Institute of Technology. Linköping University, Department of Mechanical Engineering.
    Söderström, Mats
    Linköping University, The Institute of Technology. Linköping University, Department of Management and Engineering, Energy Systems.
    Modelling of thermal energy storage in industrial energy systems the method development of MIND2002In: Applied Thermal Engineering, ISSN 1359-4311, E-ISSN 1873-5606, Vol. 22, no 11, p. 1195-1205Article in journal (Refereed)
    Abstract [en]

    Industrial energy efficiency is of vital importance as regards environment and industrial profitability. Optimisation of industrial energy systems may show a way towards improved use of resources in energy supply as well as in production processes. The deregulation of the electricity market in some countries increases flexibility in electricity contracts. Taking advantage of the price structure in these contracts is one of the ways to minimise the energy costs and decrease the influence on the environment. Thermal energy stores are very suitable facilities for achieving these goals, having the capability of moving energy use from one period of time to another and thereby influencing not only energy cost but also costs related to power demand if electric energy use is involved. In this paper, the influence on energy costs, energy and material flows resulting from the use of energy storage is discussed. Energy storage has been modelled by using MIND (Method for analysis of INDustrial energy systems) in the form that has recently been developed by the author. A case study from the pulp and paper industry has been used to verify this. © 2002 Elsevier Science Ltd. All rights reserved.

  • 11.
    Larraona, Gorka S.
    et al.
    University of Navarra, Spain .
    Rivas, Alejandro
    University of Navarra, Spain .
    Anton, Raul
    University of Navarra, Spain .
    Ramos, Juan Carlos
    University of Navarra, Spain .
    Pastor, Ignacio
    University of Navarra, Spain .
    Moshfegh, Bahram
    Linköping University, Department of Management and Engineering, Energy Systems. Linköping University, The Institute of Technology.
    Computational parametric study of an impinging jet in a cross-flow configuration for electronics cooling applications2013In: Applied Thermal Engineering, ISSN 1359-4311, E-ISSN 1873-5606, Vol. 52, no 2, p. 428-438Article in journal (Refereed)
    Abstract [en]

    A parametric study based on design of experiments (DoE) techniques was carried out by computational simulation in order to evaluate the effect that design parameters have on heat transfer and pressure loss of an impinging jet in a cross-flow configuration. The main effects of each parameter and the interactions between parameters were analyzed in detail through the Response Surface Methodology (RSM). Additionally, the potential of the impinging jet in a cross-flow configuration was assessed by calculating the optimal values of the parameters and comparing the cooling efficiency of the resulting configuration with the efficiency of the conventional cross-flow configuration. It was found that the degree to which the average heat transfer coefficient is enhanced as the result of adding an impinging jet depends on the height of the cooled component. Specifically, it was found that the higher the component, the more significant the enhancement.

  • 12.
    Wikstrom, P.
    et al.
    Wikström, P., Department of Materials Science and Engineering, Division of Energy and Furnace Technology, Royal Institute of Technology (KTH), Brinellvägen 23, S-100 44 Stockholm, Sweden.
    Blasiak, W.
    Department of Materials Science and Engineering, Division of Energy and Furnace Technology, Royal Institute of Technology (KTH), Brinellvägen 23, S-100 44 Stockholm, Sweden.
    Berntsson, Fredrik
    Linköping University, The Institute of Technology. Linköping University, Department of Mathematics, Scientific Computing.
    Estimation of the transient surface temperature and heat flux of a steel slab using an inverse method2007In: Applied Thermal Engineering, ISSN 1359-4311, E-ISSN 1873-5606, Vol. 27, no 14-15, p. 2463-2472Article in journal (Refereed)
    Abstract [en]

    In the steel industry it is of great importance to be able to control the surface temperature and heating- or cooling rates during heat treatment processes. An experiment was performed in which a steel slab was heated up to 1250 °C in a fuel fired test furnace. The transient surface temperature and heat flux of a steel slab is calculated using a model for inverse heat conduction. That is, the time dependent local surface temperature and heat flux of a slab is calculated on the basis of temperature measurements in selected points of its interior by using a model of inverse heat conduction. Time- and temperature histories were measured at three points inside a steel slab. Measured temperature histories at the two lower locations of the slab were used as input to calculate the temperature at the position of the third location. A comparison of the experimentally measured and the calculated temperature histories was made to verify the model. The results showed very good agreement and suggest that this model can be applied to similar applications in the Steel industry or in other areas where the target of investigation for some reason is inaccessible to direct measurements. © 2007 Elsevier Ltd. All rights reserved.

1 - 12 of 12
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf