Research Assistant

Two-Phase Flow Boiling and Condensation of Refrigerants

Location: Thermofluids Research Laboratory (TF-LAB), Department of Mechanical Engineering, York University, Toronto, Canada

Supervisor: Prof. Roger Kempers, P.Eng.

Term: 3-4 months (with possibility of extension)

Start date: January 2026

Project summary

We are seeking a hands-on research assistant to help re-design, construct, and commission an experimental refrigerant test loop for an industrial-sponsored research project. A first-generation rig has already been designed and built; the successful candidate will work closely with Prof. Kempers to reconfigure the loop for a future test campaign. This role is ideal for someone with strong “hands-on” technical ability and practical skills in a thermofluids or HVAC/refrigeration lab environment.

Key responsibilities

  • Assist with the thermal-hydraulic and mechanical re-design and refinement of an existing refrigerant test loop

  • Support instrumentation and wiring: Mounting and connecting flow meters, pressure transducers, temperature sensors, and power meters. Integration of sensors into the data acquisition system.

  • Pressure testing, leak detection, evacuation, and charging; perform basic loop checkout, steady-state testing, and troubleshooting of operational issues.

  • Maintain a safe, organized lab environment by following procedures for refrigerant handling, pressurized systems, and electrical equipment. Documenting modifications, test configurations, and issues encountered.

Essential qualifications

  • Bachelor’s degree in Mechanical Engineering, Chemical Engineering, Engineering Technology, or related field, or senior undergraduate / MASc student with strong lab experience.

  • Demonstrated hands-on ability in a thermofluids, heat transfer, or HVAC/refrigeration lab (e.g., test rigs, pumps, piping, heat exchangers).

  • Comfortable working with tools, fittings, tubing/piping, and basic electrical wiring for sensors.

  • Strong practical troubleshooting skills and attention to detail.

  • Proficiency in MATLAB for data analysis and experimental automation.

  • Ability to work safely, follow procedures, and keep clear notes on changes made to the rig.

  • Good communication skills and ability to work collaboratively in a small team.

Desirable skills

  • Experience with refrigeration or vapor-compression systems (e.g., AC, heat pumps, chillers, refrigeration training or co-op/industry experience).

  • Familiarity with pressure testing, vacuum pumps, leak detection, and charging of refrigerant systems.

  • Experience with basic data acquisition systems and thermocouple/RTD installation.

  • Some familiarity with SolidWorks or other CAD tools for simple brackets, manifolds, or layout sketches.

How to apply

Please submit a brief cover letter, resume or CV, and contact details for 1–2 references to kempers@yorku.ca. Subject line: <Your Name> - Two-Phase Research Assistant