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Trane Technologies Principal Engineer – Thermal Systems in Bloomington, Minnesota

Principal Engineer – Thermal Systems

Bloomington MN 7860 12th Ave, Bloomington, Minnesota, United States

1 additional location

United States, North Carolina, Davidson


Requisition # 2000077

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At Trane Technologies we Challenge Possible. Our brands – including Trane® and Thermo King®– create access to cooling and comfort in buildings and homes, transport and protect food and perishables, connect customers to elevated performance with less environmental impact, dramatically reduce energy demands and carbon emissions, and innovate with a better world in mind. We boldly challenge what’s possible for a sustainable world.

The Role

Employ the thermosciences in the analysis and evaluation of systems that produce a refrigerating, heat pumping, air-conditioning, or heating function. Thermodynamics is the foremost discipline, augmented with heat and mass transfer along with fluid dynamics.

Essential Responsibilities:

  • Support development and enable implementation of the next generation of refrigerants with low environmental impacts covering all product areas.

  • Gather information about prospective refrigerants from refrigerant manufacturers, review of technical and patent literature, and other sources.

  • Develop and/or utilize tools to model the thermodynamic properties of prospective refrigerants.

  • Conduct analyses to evaluate and screen refrigerant candidates for further development.

  • Direct laboratory testing of units to determine performance of candidate refrigerants in real equipment. Process data to fully understand and interpret performance characteristics.

  • Prepare reports for internal dissemination of information. Prepare and present technical papers for external audiences to support the company’s strategic directions.

  • Support other technology areas requiring a foundation in thermosciences, especially the thermodynamics of mixtures.

  • Correlating and describing the properties of refrigerant/lubricant mixtures.

  • Evaluation of desiccant dehumidification, both liquid and solid, for air conditioning purposes.

  • Modeling and evaluation of absorption cycles for chilling and heating, including lithium bromide/water and water/ammonia systems.

  • Modeling and evaluation of other sorption processes.

  • Modeling and evaluation of combustion processes.

  • Evaluation of new and innovative technologies as they appear for potential commercial value, either as disruptive competition or prospective new products or services for the company.


  • Strong understanding of the principles of fundamental thermodynamics. Understanding of the equations of state for describing the thermodynamic properties of refrigerants, including mixtures.

  • Strong foundation in single-phase and phase-change (boiling and condensation) convective heat and mass transfer. Knowledge of conductive and radiative heat transfer.

  • Strong foundation in fluid mechanics.

  • Strong understanding of the vapor compression cycle and component performance characteristics.

  • Understanding of chemistry and chemical reactions.

  • Capability to build computational tools (Excel, Matlab) to execute evaluations and analyses of data.

  • Ability to formulate a problem, efficiently execute an analysis, and clearly summarize conclusions and recommendations.

  • Solid skills for writing reports and papers and presenting relevant material to others.

  • Ability to interact and communicate with others in a collegial manner.

We offer competitive compensation and comprehensive benefits and programs that help our employees thrive in both their professional and personal lives. We are proud of our winning culture which is inclusive and respectful at its core. We share passion for serving customers, caring for others, and boldly challenging what’s possible for a sustainable world.

We are committed to achieving workforce diversity reflective of our communities. We are an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identify, national origin, pregnancy, age, marital status, disability, status as a protected veteran, or any legally protected status.