Jakob Ege Friis

Research Assistant, PhD Student

Profile

Project title: Anti-Fouling Coatings for Heat Exchanger Surfaces             

Main supervisor:  Assistant Prof. Joseph Iruthayaraj

Co-supervisors: Prof. Kim Daasbjerg, Assoc. Prof. Rikke Louise Meyer

Project period: July 2014  to June 2017     

 

Project description
Fouling is an ubiquitous and a complex process in which materials of diverse origin – biological, organic and inorganic – adhere to surfaces that are in contact with liquid medium. Fouling is detrimental in many industrial installations causing inefficient process output, reduced lifetime, and thereby, necessitating, frequent cleaning and/or replacement of parts, leading to increased maintenance cost. One such industrial installation that is often exposed to fouling is heat exchangers, a piece of equipment built for efficient heat transfer from one medium to another. The current anti-fouling coating technology offers only thick coatings, which results in poor heat transfer properties.

The purpose of this project is to develop stable heat transfer effective anti-fouling coatings for heat exchanger installations. These anti-fouling coatings is to be made by a combination of surface modification tools in order to chemically attach different types of hydrophilic polymers and/or metal nano-particles of sub-micron thickness to stainless steel surfaces.

Several parameters will be studied systematically to optimize the coating performance in terms of thermal and solvent stability, anti-fouling and heat transfer efficiency. Surface analytical techniques includes: Ellipsometry, contact angle, XPS, ToF-SIMS. Anti-fouling property of the coated surfaces will be evaluated using microscopes equipped with a flow cell. The heat transfer efficiency will be tested by mimicking the relevant conditions employed at the industrial site. Finally, the optimized coatings will be tested on commercial heat exchanger installations in collaboration with industrial companies.

 

External partners/project that the PhD is part of

  • Grundfos
  • Alfa Laval
  • Accoat

ID: 78811756