WorldCat Identities

Lappalainen, Jari

Overview
Works: 11 works in 23 publications in 3 languages and 132 library holdings
Roles: Instrumentalist, Author
Classifications: M1,
Publication Timeline
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Most widely held works by Jari Lappalainen
Go go( )

1 edition published in 2008 and held by 110 WorldCat member libraries worldwide

En spjutkastares visor by Cornelis Vreeswijk( Recording )

6 editions published in 1980 in Undetermined and Swedish and held by 7 WorldCat member libraries worldwide

Idyll by Design and Media Cumulus International Association of Universities and Colleges of Art( Recording )

in Undetermined and held by 5 WorldCat member libraries worldwide

Mi tango triste by Pedro's Heavy Gentlemen( Recording )

2 editions published in 2000 in Undetermined and held by 2 WorldCat member libraries worldwide

Tango by Pedro Hietanen( Recording )

4 editions published in 1993 in Undetermined and held by 2 WorldCat member libraries worldwide

Finsk tango
Suomen paras hiihtoseura : Mikkelin hiihtäjät, 1934-1984, 50 vuotta( Book )

1 edition published in 1984 in Finnish and held by 1 WorldCat member library worldwide

Musica( Recording )

1 edition published in 1999 in Finnish and held by 1 WorldCat member library worldwide

BITTER SWEET : GoGo( )

1 edition published in 2011 in English and held by 1 WorldCat member library worldwide

Modelling and Dynamic Simulation of the 2nd Generation Oxy Fired Power Plant – Oxidant Fan Failure Case( )

1 edition published in 2017 in English and held by 1 WorldCat member library worldwide

Abstract: In large and complex processes use of simulators will take place more and more in the future to avoid and learn about transients and unexpected situations. There are plenty of dynamic simulation tools in the markets but most of them have been developed and used for quite specific and limited application areas. At the moment there are just few simulation tools which are capable to handle dynamically in the same simulation case challenging process areas like combustion, distillation, chemistry and control of very large process areas. For this reason, in this study, there was a need to carry out co–simulation where two dynamic simulation tools Apros and Aspen Plus Dynamics were combined together by using Matlab Simulink as an interface. The co–simulation approach was a way to construct large dynamic process simulation environment, where typical operational transients and failure situations of an oxy fired power plant were possible to test and analyze. Under EU 7th Framework Programme (FP7) the FLEXI BURN CFB project an oxy firing concept based on circulated fluidized bed (CFB) combustion and supercritical once-through (OTU) water steam cycle was developed and successfully demonstrated[1] . This project also generated a dynamic simulation model of the 1st generation oxy firing concept, as we call it. In the EU 7th Framework Program's project O2GEN (Optimization of Oxygen-based CFBC Technology with CO2 capture), the 2 nd generation concept of CFB based oxy firing was developed. The target of the project was, at first, to increase O2 content in recirculated flue gas to see what kind of effect it has to the heat exchange and corrosion in the boiler. Secondly, the target was to carry out exergy analysis to increase the whole concept efficiency by decreasing energy consumption in the boiler, Air Separation Unit (ASU) and CO2 -purification unit (CPU). Based on these steady state analysis means the refined concept was then modelled for dynamic simulations which were carried out by using Apros and Aspen Plus Dynamics dynamic modelling tools in a co–simulation mode. This paper deals with dynamic simulation of the 2 nd generation 600 MW oxy fired CFB once trough boiler. In this paper we will present the dynamic model which includes oxy fired CFB boiler, turbine island, ASU and CPU with all needed equipment like heat exchangers, pipes, pumps, air and fuel feeding systems, distillation columns and sequestration vessels. Automation like measurements, controllers and actuators are included in the model. The simulation case selected for this paper presents an analysis what happens when one of the oxidant fans trips on boiler full load operation and how to handle this kind of failure by decreasing the boiler load to sufficient level of regarding the available oxidant feeding capacity. There were several items which were taken into account in the boiler, turbine island, ASU and CPU side when this kind of failure takes impact. The main findings in the failure analysis will be presented. Finally, discussion and future aspects of the simulation approach described will be given
Pieniä suuria miehiä : Kaposaaren keisarista Rantakylän majuriin by Jari Lappalainen( Book )

1 edition published in 1978 in Finnish and held by 1 WorldCat member library worldwide

Dynamic process simulation promotes energy efficient ship design( )

1 edition published in 2016 in English and held by 1 WorldCat member library worldwide

Abstract: Energy efficiency has become increasingly important to ship owners and builders, due to fuel costs and tightening environmental regulations, but also due to public opinion and expectation for green technology. Improved energy efficiency and significant savings are achievable by increasing waste heat utilization. A probable side effect of commissioning new technology is increased system complexity. This makes it more difficult to make design decisions between alternative technologies; also, the operation of the system needs more attention. Dynamic system level simulation has been used for energy systems analysis already for decades in onshore energy industry; now it is increasingly applied in marine engineering. In this study a commercial simulator Apros was used to model and simulate energy systems of a cruise ferry Viking Grace, which features novel energy saving solutions, such as a waste heat accumulator system and cooling options by liquefied natural gas (LNG) vaporizing, and by seawater. Dynamic models of these systems were developed and validated against available measurement data. The study showed that modelling and dynamic system level simulation can provide substantial benefits in the design of energy efficient ship in new buildings, and in existing ships. Highlights: Dynamic process simulation model of ship energy systems was developed. The target ferry uses LNG as fuel, and has novel energy efficient solutions. Waste heat accumulator system and different cooling options were modelled. Simulation analysis helped to understand and improve the energy system operation. Simulation helps to evaluate different options for improving energy efficiency
 
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Audience level: 0.57 (from 0.49 for Go go / ... to 0.99 for Pieniä su ...)

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