93733 - VEHICLE ENERGETICS AND HVAC SYSTEMS M

Conoscenze e abilità da conseguire

The main aspects of vehicle climate control systems for automotive engineering are explored, with a special focus to electric vehicle applications. A thorough up-to-date knowledge of current A/C systems, with the common used refrigerants and the new possible replacement systems, the electronic and electrical controls are enlightened. Recent approaches to optimise the interaction between cabin vehicle climate control system and electronic and electric devices cooling system are shown.

Contenuti

Vehicle enegetics - basis

The energy consumption of electric vehicles is explored, with a focus to the appliances energy demand. The car performances and the aerodynamics are included in the analysis, by including the climate change influence.

Energy balance in HVAC systems

Thermal Loads and Comfort conditions: thermophysical properties of vehicle components (thermal transmittance, thermal bridges, thermal inertia, solar transmission). Energy balance of the vehicle. Calculation of winter and summer thermal loads. Basic concepts on Thermal Comfort: subjective and objective indices.

Battery cooling

Lithium-ion battery cells. Principle of battery behavior from the thermal management point of view. Modeling of the thermal behavior of batteries. Comparison of dfferent battery cooling approaches: air cooling, liquid cooling, and new appoaches based on metal foams and Phase Change Materials (PCM).

Dynamic approach

Simulation techniques of the dynamic behavior of HVAC system in combination of the battery thermal management. Development of ad hoc lumped parameter approaches based on matlab.

Energy Life Cycle Assessment (LCA)

Basis of the LCA of electric vehicles in comparison with internal combustion vehicles. Application to some examples.

Testi/Bibliografia

Automotive Air Conditioning - Optimization, Control and Diagnosis. Quansheng Zhang, Shengbo Eben Li, Kun Deng. Springer 2016.

 

Metodi didattici

Theoretical lessons in the classroom with projection of slides.

Exercises consisting in the dimensioning and the verification of HVAC systems behavior.

Modalità di verifica e valutazione dell'apprendimento

The exam consists of a written test followed by an oral colloquium on the theoretical aspects of the course.

In order to be eligible for the oral test, the student must have previously passed the written test.

The written test is based on the specific topics of the devices in the HVAC system.

The oral test consists of an individual interview and ensures the acquisition of the candidate's knowledge on the main arguments treated in the course.

The score of the exam is expressed through a single vote.

Passing the exam will be guaranteed to students who have demonstrated operational capacity and knowledge of the theoretical concepts, in relation to the key concepts illustrated in the course.

Strumenti a supporto della didattica

The teaching material presented at the lesson will be made available to the student electronically. All slides presented during the course will be available online.

Orario di ricevimento

Consulta il sito web di Beatrice Pulvirenti