Juha Viholainen
Lappeenranta University of Technology
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Publication
Featured researches published by Juha Viholainen.
World Pumps | 2005
Simo Hammo; Juha Viholainen
Simo Hammo, laboratory manager and Juha Viholainen, research assistant from Lappeenranta University of Technology, Finland, define the accuracy of the flow control function of the ABB industrial drive, ACS800 pump control application program 7.1, and study different factors related to flow calculation.
international symposium on power electronics, electrical drives, automation and motion | 2008
Tero Ahonen; Risto Tiainen; Juha Viholainen; Jero Ahola; J. Kestila
Variable speed driven (VSD) pumps are nowadays widely used in industry applications. Variable speed pumping improves operational flexibility of the pump drive compared with throttle control. In many cases this results in energy cost savings. Nowadays, the performance of frequency converters allows their use as an intelligent monitoring device for the pump drive. This provides new possibilities for the maintenance and operation personnel. In this article, some functions provided by the frequency converter for pump condition and operation monitoring are explained. The applicability of a frequency converter for monitoring purposes is also discussed.
World Pumps | 2009
Juha Viholainen; E Vakkilainen; J Tolvanen
To reduce the energy consumption of a parallel pumping system the whole pumping process and its components must be monitored. Simulated environments can be used in finding energy saving potential, which could be realized with different technical solutions such as VSD installment or changing speed adjustment methods.
international conference on industrial technology | 2010
Juha Viholainen; Mervi Sihvonen; Jukka Tolvanen
This paper focuses on how integrated flow measurement works on variable speed drives (VSDs) that are used to control the speed of pumps. With the measurement feature it is possible to build a pumping system without using separate flow-meters. Having a system with fewer parts makes it more reliable and also less expensive. The flow can be measured with sufficient accuracy for most purposes. The integrated approach can also help in finding leaking spots in the system.
Energy Conversion and Management | 2010
Tero Ahonen; Jussi Tamminen; Jero Ahola; Juha Viholainen; Niina Aranto; Juha Kestila
Energy Efficiency | 2013
Juha Viholainen; Jussi Tamminen; Tero Ahonen; Jero Ahola; Esa Vakkilainen; Risto Soukka
Energy Efficiency | 2014
Jussi Tamminen; Juha Viholainen; Tero Ahonen; Jero Ahola; Simo Hammo; Esa Vakkilainen
Archive | 2012
Jussi Tamminen; Juha Viholainen
Applied Energy | 2016
Juha Viholainen; Mika Luoranen; Sanni Väisänen; Antti Niskanen; Mika Horttanainen; Risto Soukka
Energy Efficiency | 2015
Tero Ahonen; Jussi Tamminen; Juha Viholainen; Joonas Koponen