Cooling Performance of an Air Conditioning System with Vortex tubefor an electric vehicle University of Tuscia

Format:

Book

Conference/Event

Author/Creator:

Mendecka, Barbara Malgorzata, author.

Contributor:

Bella, Gino

Chiappini, Daniele

Conference Name:

15th International Conference on Engines & Vehicles (2021-09-12 : Capri, Italy)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2021

Summary:

Thermal comfort in the vehicle cabin environment is an important factor for passengers of both internal combustion engines and electric vehicles. Air conditioning (AC) is a critical system for electric vehicles (EVs) as it is the second most power-consuming system after electric motor. New solutions dedicated to EV, including thermoelectric AC modules, vapor compression refrigeration cycle, positive temperature coefficient (PTC) heater as well as heat pumps, are being investigated to maintain a stable and comfortable interior environment under hot and cold weather conditions. At present, the most dominated automotive AC systems are those using R134a refrigerant characterized by high global warming potential. Therefore, an innovative and eco-friendly AC system design still must be developed to supply sufficient cooling or heating capacity while minimizing the influence of the AC system on driving ranges and environmental performance. The alternative can be a vortex tube-based AC system. The vortex tube is a fluid dynamic device capable to separate an inlet compressed flow in two streams at hot and cold temperatures, respectively. It has no moving parts and does not require a refrigerant as it employs air as a working fluid. The objective of this study is to investigate the feasibility of the use of a vortex tube integrated into the air conditioning system for an electric vehicle. Using the previously optimized geometric configuration of the vortex tube with direct heat exchange developed for a commercially available mini EV, energy analysis of the system under various experimental conditions was performed and its performance parameters under steady-state operation were evaluated. Specifically, cooling performance and coefficient of performance (COP) of the vortex tube AC system were tested varying to the discharge airflow rate, cooling airflow temperature and supply compressed air pressure, and, eventually compared with the conventional vapor compression cycle for the same working conditions

Notes:

Vendor supplied data

Publisher Number:

2021-24-0098

Access Restriction:

Restricted for use by site license