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PhD scholarship in Ventilation Exhaust Air Heat Pumps with Low-GWP Refrigerants 

The present PhD project will be hosted by DTU, Department of Mechanical Engineering, Section of Thermal Energy. 

The section covers research and education in energy conversion in a broad sense based on a mechanical engineering foundation with focus on the plants and equipment involved, such as power cycles, heat supply, internal combustion engines, alternative fuels, refrigeration and heat pumps. The research accordingly includes aspects of theoretical work, numerical modeling and experiments.

Research field of the position 

  • Exhaust air heat pumps offer heating solutions in areas without access to district heating. Exhaust air heat pumps use exhaust air from the ventilation system of a building as the heat source in order to supply space heating and possibly domestic hot water heating.                                                                          
  • State-of-the-art exhaust air heat pumps use HFC refrigerants, which are subject to a phase-out in Europe. Therefore, the aim is to develop new technology that uses low-GWP refrigerants, increases the energy efficiency and ensures the safety of the products. 
  • The research will be conducted in close collaboration with the industrial partners in the project.

Responsibilities and tasks
The focus of the research is to investigate solutions for using low-GWP refrigerants in exhaust air heat pumps. This will include a screening of possible refrigerants to be used and a study of possibilities for refrigerant charge minimization.

The main aim of the research is to formulate suggestions on component designs and system control configuration by means of numerical modelling. Hence, the PhD student will be assisting the project partners in designing exhaust air heat pumps with low-GWP refrigerants, and to provide detailed validation of the development part of the project carried out by the partners.
The results of the research work will be disseminated in papers in international journals and by presentations at international conferences. In addition, the PhD student will be involved in teaching and supervision of students in fields closely related to the research. 

  • The PhD student will develop advanced numerical models of exhaust air heat pumps and of innovative heat transfer solutions
  • The PhD student will work in close collaboration with industrial partners developing innovative solutions
  • The PhD student will communicate and disseminate results to national and international audiences both in industry and academia
  • The PhD student will be working closely together with other researchers in the section for development of common modelling tools and solutions
  • The PhD student will develop project ideas for students at all levels and will be engaged in the supervision of the projects carried out by the students.

To apply, please read the full job advertisement via the "Ansøg" link

Application deadline: 4 February 2019 

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