Dr. Tomas Leffler

Assistant Professor

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Biography

Tomas Leffler’s research focuses on alkali chlorine-related problems occurring during the combustion of complex renewable fuels in circulating fluidized bed boilers (CFB). He primarily works with ilmenite, a bed material used in the concept of Oxygen Carrier Aided Combustion (OCAC). Ilmenite has the capacity for redox sequences that transport oxygen in solid state reactors. It has been shown to possess alkali capturing abilities, which is of interest for corrosion deposition avoidance. In addition to bed material-alkali interactions, Tomas’s research areas include deposit formation, slagging, fouling, and high-temperature corrosion. His research questions aim to extend the operational time of boilers, reduce maintenance costs, and ultimately increase the efficiency and availability of the plants.

Research Interests

Experience

Senior Lecturer

2020-01-01 — Present

Chalmers University of Technology • Gothenburg, Sweden

Teaching and conducting research in Energy Materials.

R&D Engineer

— Present

Vattenfall AB • Gothenburg, Sweden

Specialist in optical gas-phase measurements of alkali chlorides in flue gas and measurements related to deposit and corrosion probes.

Requirements for Chalmers University of Technology

Master Program
Requirements
GPA Requirement
Required:3
IELTS
Listening
Required:5.5
Reading
Required:5.5
Writing
Required:5.5
Speaking
Required:5.5
Overall
Required:6.5
TOEFL
Writing
Required:20
Total
Required:90
PTE
Listening
Required:62
Reading
Required:62
Writing
Required:62
Speaking
Required:62
Overall
Required:62
Prerequisites
Bachelor's degree in a relevant field of Engineering, Science, or Architecture Minimum 180 ECTS credits Specific course prerequisites in Mathematics (Linear Algebra, Multivariable Analysis, Statistics) Specific course prerequisites in Physics or Chemistry depending on program
Application Checklist
  • Certificates and diplomas from previous university studies
  • Transcripts of completed courses and grades
  • Proof of English proficiency
  • Proof that you meet the specific entry requirements
  • Copy of passport or ID
  • Curriculum Vitae (CV)
  • Letter of Motivation (1 page)
  • Project portfolio (required for Architecture and Design programs)
Specialization Notes

General requirements apply to all departments listed at Chalmers. Specific departments like Architecture require a portfolio. Programs in Management/Economics do not strictly require GMAT/GRE but high academic standing is prioritized.