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Dive into the research topics where Tor-Martin Tveit is active.

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Featured researches published by Tor-Martin Tveit.


Computers & Chemical Engineering | 2010

An interactive multi-objective approach to heat exchanger network synthesis

Timo Laukkanen; Tor-Martin Tveit; Kaisa Miettinen; Carl-Johan Fogelholm

In this work we present a multi-objective approach to heat exchanger network synthesis. The approach solves a modified version of the Synheat model using an interactive multi-objective optimisation method, NIMBUS, which is implemented in GAMS. The results obtained demonstrate the potential of interactive multi-objective optimisation.


Simulation Modelling Practice and Theory | 2003

A simulation model of a sulphuric acid production process as an integrated part of an energy system

Tor-Martin Tveit

Abstract Power plant process simulation software is well-suited for the modelling of energy systems and more importantly, tools for analysing the energy efficiency are often built into the software. This work presents the development of a simulation model for a sulphuric acid plant using a commercial software package for power plant process simulation. This will be of value to for instance small consultant and engineering companies involved with audits and analysis of energy systems. For small sized companies the cost of acquiring and maintaining many different specialised software packages will be noticeable. However, companies involved with audits and analysis of energy systems will in most cases have access to at least one software package for power plant process calculations. The use of this kind of software for also modelling chemical plants would be valuable to these companies. The results of this work shows that it is possible to use an inexpensive but powerful power plant process simulation software for modelling a common chemical process as a part of a large energy system.


Energy Conversion and Management | 2009

Multi-period MINLP model for optimising operation and structural changes to CHP plants in district heating networks with long-term thermal storage

Tor-Martin Tveit; Tuula Savola; Alemayehu Gebremedhin; Carl-Johan Fogelholm


Applied Thermal Engineering | 2007

A MINLP model including the pressure levels and multiperiods for CHP process optimisation

Tuula Savola; Tor-Martin Tveit; Carl-Johan Fogelholm


Chemical Engineering Research & Design | 2012

Simultaneous heat exchanger network synthesis for direct and indirect heat transfer inside and between processes

Timo Laukkanen; Tor-Martin Tveit; Carl-Johan Fogelholm


Applied Thermal Engineering | 2012

Bilevel heat exchanger network synthesis with an interactive multi-objective optimization method

Timo Laukkanen; Tor-Martin Tveit; Kaisa Miettinen; Carl-Johan Fogelholm


Applied Thermal Engineering | 2006

Multi-period steam turbine network optimisation. Part II: Development of a multi-period MINLP model of a utility system

Tor-Martin Tveit; Carl-Johan Fogelholm


Applied Thermal Engineering | 2006

Multi-period steam turbine network optimisation. Part I: Simulation based regression models and an evolutionary algorithm for finding D-optimal designs

Tor-Martin Tveit; Carl-Johan Fogelholm


Applied Thermal Engineering | 2005

Experimental design methods and flowsheet synthesis of energy systems

Tor-Martin Tveit


Energy | 2006

A framework for local and regional energy system integration between industry and municipalities—Case study UPM-Kymmene Kaukas

Tor-Martin Tveit; Juha Aaltola; Timo Laukkanen; Mika Laihanen; Carl-Johan Fogelholm

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Timo Laukkanen

Helsinki University of Technology

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Kaisa Miettinen

University of Jyväskylä

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Tuula Savola

Helsinki University of Technology

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Juha Aaltola

Helsinki University of Technology

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Mika Laihanen

Lappeenranta University of Technology

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