About us

Flocess is a young technology company specialized on pillow-plate heat transfer equipment. We realized early on that the pillow-plate market is suffering from lack of standardized calculation methods. Therefore, we developed the first design and verification software for pillow-plate heat transfer equipment. We believe that our software is key to enabling the pillow-plate market and accelerating growth. The knowhow in our design tool is based on extensive research and development performed using advanced computational fluid dynamics methods and experimental procedures. Flocess goal is to provide the leading design software for pillow-plate heat exchangers on the market and to make it to the industry standard thus enabling pillow plates world wide.


Dr. Mark Piper

Dr. Ing. Mark Piper is an expert in heat transfer, fluid dynamics and pillow-plate heat exchangers. He studied energy and process engineering at the Technical University of Berlin, Germany. He then proceeded with PhD studies as a research assistant at the Chair of Fluid Process Engineering of Paderborn University, Germany, where he recieved his doctoral degree for his research on fluid dynamics and heat transfer in pillow-plate equipment. Since 2018 he is the CEO of Flocess GmbH.


Prof. Dr. -Ing. Numrich

Prof. Numrich is an expert in heat transfer equipment and process design with over 25 years of experience in industry.

He teaches chemical plant and equipment engineering at Paderborn University, Germany, and is the author of the chapter "Condensation" in the VDI Heat Atlas. He is the head of the conference - Sewage Sludge Treatment - of the VDI Wissensforum and works as a consultant in energy and process technology with his company Prof. Numrich-Gesellschaft für Energie- und Verfahrenstechnik mbH. (www.numrich-gev.de).


Journal articles

M. Piper, A. Olenberg, J.M. Tran, R. Goedecke, S. Scholl, E.Y. Kenig, Bestimmung charakteristischer Geomtrieparameter von Thermoblech-Wärmeübertragern, Chem. Ing. Tech. 86 (2014) 1214-1222. DOI: https://doi.org/10.1002/cite.201300159

M. Piper, J.M. Tran, E.Y. Kenig, Untersuchung der Fluiddynamik und des Wärmeübergangs bei einphasiger Strömung im welligen Spalt zwischen Thermoblechen, Chem. Ing. Tech. 87 (2015) 216-225. DOI: https://doi.org/10.1002/cite.201400091

A. Lautenschleger, A. Olenberg, E.Y. Kenig, A systematic CFD-based method to investigate and optimise novel structured packings, Chem. Eng. Sci. 122 (2015) 452-464. DOI: https://doi.org/10.1016/j.ces.2014.09.040

M. Piper, C. Wecker, A. Olenberg, J.M. Tran, E.Y. Kenig, An experimental analysis of the topology and dynamics of a falling liquid film over the wavy surface of a vertical pillow plate, Chem. Eng. Sci. 130 (2015) 129-134. DOI: https://doi.org/10.1016/j.ces.2015.03.005

M. Piper, A. Olenberg, J.M. Tran, E.Y. Kenig, Determination of the geometric design parameters of pillow-plate heat exchangers, Appl. Therm. Eng. 91 (2015) 1168-1175. DOI: https://doi.org/10.1016/j.applthermaleng.2015.08.097

M. Piper, A. Zibart, J.M. Tran, E.Y. Kenig, Numerical investigation of turbulent forced convection heat transfer in pillow plates, Int. J. Heat Mass Transfer 94 (2016) 516-527. DOI: https://doi.org/10.1016/j.ijheatmasstransfer.2015.11.014

A. Olenberg, E.Y. Kenig, Optimization of structured packings using twisted tape inserts, Chem. Eng. Res. Des. 132 (2018) 1-8. DOI: https://doi.org/10.1016/j.cherd.2017.12.036

Conference proceedings

M. Piper, A. Zibart, J.M. Tran, E.Y. Kenig, A numerical study on turbulent single-phase flow and heat transfer in pillow plates, in: Proceedings of the 15th International Heat Transfer Conference, Kyoto, Japan, 2014. DOI: http://doi.org/10.1615/IHTC15.hex.008929

M. Piper, J.M. Tran, E.Y. Kenig, A CFD-study of the thermo-hydraulic characteristics of pillow-plate heat exchangers, in: Proc. ASME 2016 Summer Heat Transfer Conference, Washington DC, USA, 2016. DOI: http://doi.org/10.1115/HT2016-7176

A. Olenberg, E.Y. Kenig, Numerical Simulation of Two-Phase Flow in Representative Elements of Structured Packings, in: Proc. ESCAPE 27 - 27th European Symposium on Computer Aided Process Engineering, Barcelona, Spain, 2017. DOI: http://doi.org/10.1016/B978-0-444-63965-3.50350-0

S. Bolte, C. Henkenius, J. Böcker, A.Zibart, E.Y. Kenig, H. Figge, Water-cooled on-board charger with optimized cooling channel, in: Proc. 2017 19th European Conference on Power Electronics and Applications (EPE'17 ECCE Europe), Warsaw, Poland, 2017. DOI: http://doi.org/10.23919/EPE17ECCEEurope.2017.8099019

Book chapter

J. M. Tran, M. Piper, E.Y. Kenig, Pillow-Plate Heat Exchangers: Fundamental Characteristics, In: Innovative Heat Exchangers, H. J. Bart and S. Scholl, Springer International Publishing, 2018, pp. 233-245. DOI: https://doi.org/10.1007/978-3-319-71641-1


M. Piper and E.Y. Kenig, inventor; Paderborn University, assignee. Pillow-plate heat exchangers. German patent DE1020160059999A1. 2016 May 18.

A. Zibart and T. Andres, inventor; Benteler Automobiltechnik GmbH, assignee. Vorrichtung und Verfahren zur Ladeluftkühlung einer turboaufgeladenen Verbrennungskraftmaschine. German patent DE102010061525A1. 2012 June 28.