Zeotropic mixtures offer a possibility of
optimizing organic Rankine cycles (ORCs) efficiencies by matching the working
fluid temperature glide to the heat source and sink temperature profiles. However,
the use of zeotropic mixtures entails a degradation of the heat transfer
coefficient compared to pure fluids, thereby posing attention to the design of
heat transfer equipment. Plate heat exchangers (PHEs) offer a suitable solution
for the high heat transfer coefficient achieved within their compact design and
the possibility to arrange the flow in a counter-current mode, which is
essential to achieve thermodynamic glide matching.
The focus of this project will be
to model, design and optimize plate heat exchangers to be used as different
components of ORCs integrated in different applications.
The student will be
responsible for developing and/or extending an existing modeling framework for
coupled cycle and component simulations.
The impact on the overall cycle
performance of both heat transfer and pressure drops for different pure fluids
and zeotropic mixtures can be assessed. The framework of the project can also
be adjusted and changed according to student’s preferences and own ideas.
We look for students with knowledge of thermodynamics, heat transfer and basic skills in programming.
The project can be framed as a final thesis, special course or others.
Contact Roberta Mancini (email@example.com) for more information.
Heat transfer, thermodynamics, basic programming