Research Scientist on HVAC Refrigeration SystemCR

• Conduct research and development of advanced refrigerant cycle structure and control strategy for household and mobility application
• Focus is on refrigerant cycle and key components concepts investigation innovative structure and component concept design requirement engineering system modeling and simulation validation.
• Work closely with corporate research hub in Renningen Germany on project activities and competence development.
• Work closely with business units to supply cutting-edge simulation solutions and transform them into product development workflows.

Main responsibility includes:

• Lead and participate research topics on advanced and innovative refrigerant cycle towards low GWP refrigerant including simulation and verification.
• Construct refrigeration system dynamic and steady-state model libraries from scratch including 1D models for compressor expansion valve heat exchanger and pipes and system identification models.
• Develop system-level dynamic and steady-state models for room air conditioners (RAC) and VRF multi-split systems covering inverter compressors electronic expansion valves (EEV) multi-evaporator refrigerant distribution networks fans and air-side heat exchangers.
• Build control-oriented reduced-order models (ROM) of RAC/VRF systems and develop control strategies in advanced methods.
• Define experimental schemes and testing protocols for both steady-state and dynamic modeling providing reliable data for model validation and accuracy improvement
• Apply and extend the above capabilities to the wider HVAC product portfolio in particular room air conditioners (RAC) and VRF multi-split systems covering air-side modeling energy-efficiency simulation and control-oriented model development.
• Support project activities to transfer deliverables to business units successfully.

Qualifications :

• PhD degree or masters degree with min. 3 years working experience in Power Engineering & Engineering Thermo-physics Refrigeration & Cryogenics Thermal Energy or related disciplines. Solid foundation in heat transfer fluid mechanics and engineering thermodynamics is required.
• Minimum 3 years of experience in refrigeration or HVAC system modeling and simulation. Experience in building simulation platforms from scratch is strongly preferred.
• Proficient in 1D simulation tools (Dymola is a must). Familiar with Simulink.
• Strong programming skills in Python and Modelica. Proficiency in MATLAB is required. C/C# development capability is a plus.
• Practical experience in Finite Volume Method (FVM) modeling model convergence optimization and simulation speedup improvement is highly valued.
• Experience with automated calibration workflow development and correlation database construction is a plus.
• Hands-on modeling experience with room air conditioners (RAC) and/or VRF multi-split systems is strongly preferred including air-source heat pumps wet-coil air-side modeling and frosting/defrosting physics
• Familiar with HVAC energy-efficiency standards and rating procedures (APF/SEER/IEER; GB/T 7725 AHRI 210/240 ISO 15042) and the psychrometrics of moist air
• Experience with Modelica-based HVAC/thermo-fluid libraries (e.g. TIL TFS Buildings/AixLib) and refrigerant property interfaces (REFPROP/CoolProp/ExternalMedia e.g. R32/R410A/R290) is a plus
• Excellent communication and coordination skills; strong written and verbal expression in English.
• Efficient goal-oriented structured working style. Strong documentation and writing skills.
• Passionate for innovation proactive self-motivated and highly responsible. Open to work in an international environment.

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Remote Work :

No

Employment Type :

Full-time