Thermal Comfort Optimization in an Electric Vehicle

Author:

Jose Sherin Sam,Chidambaram Ramesh Kumar

Abstract

In automobiles, the demand for HVAC has been rising for decades and the key variables that affect the thermal comfort in a car were identified as air velocity, temperature, radiant temperature, and relative humidity. Thermal comfort estimation in a vehicle depends on the transient behavior of the cabin space and boundaries. The predicted mean vote (PMV) and predicted percentage of dissatisfied (PPD) are the available methods to describe and optimize thermal comfort in cabin space. In this paper, the cabin thermal comfort of a minivan was analyzed for reduction of energy consumption with the help of experimental and numerical simulation. Using CFD simulation and validation with experimental data, the flow dynamics inside a vehicle cabin is evaluated based on air velocity, temperature, and comfort indices. With some error for the extreme planes, a strong agreement was reached between the experimental values and the CFD model. With the reduction in the air velocity from 2.3 m/s to 1.3 m/s, the average power required to run the blower can be reduced by 43%, providing an advantage of reducing the capacity of the compressor. The higher PPD values were observed on the walls of the cabin and at the outlet of the AC vents.

Publisher

International Information and Engineering Technology Association

Subject

Fluid Flow and Transfer Processes,Mechanical Engineering,Condensed Matter Physics

Cited by 5 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Deep learning and thermographic imaging method for thermal comfort prediction in different genders;International Journal of Thermal Sciences;2024-03

2. A Critical Review on Occupant's Thermal Comfort Inside Electric Vehicle Car Cabin;2023 2nd Edition of IEEE Delhi Section Flagship Conference (DELCON);2023-02-24

3. Influence of the air diffusers on human thermal comfort inside vehicles – a review article;IOP Conference Series: Earth and Environmental Science;2023-01-01

4. Assessment of an Electric-Vehicle HVAC System Using Numerical Simulation and Experimental Validation;SAE Technical Paper Series;2022-11-09

5. Battery Thermal Management and Health State Assessment of New Energy Vehicles;International Journal of Heat and Technology;2022-04-30

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