Mahesh Suresh Patil

Numerical Study on Thermal Performances of Multi Heat Source Heating System Using Butane for Electric Vehicle

This study numerically investigates the thermal performance of a 2.0-kW butane-based combustion heating system for an electric vehicle under cold conditions. The system is used for cabin space heating and coolant-based battery thermal management. ANSYS CFX 17 software was used for parametric analysis. The mass flow rates of cold air and coolant were varied, and their effects were compared. The numerical results were validated with theoretical studies, which showed an error of 0.15%. As the outside air mass flow rates were increased to 0.005, 0.01, and 0.015 kg/s, the cabin supply air temperature decreased continuously while the coolant outlet temperature increased. When the coolant mass flow rates were increased to 0.005, 0.01 and 0.015 kg/s, the air temperature increased while the coolant outlet temperatures decreased. The optimal mass flow rates are discussed in a consideration of the requirements for high cabin heating capacity and efficient battery thermal management.

Numerical Study on Geometric Parameter effects of Power Generation Performances for Segmented Thermoelectric Generator

Thermoelectric generator (TEG) is a promising option in waste heat recovery with various advantages including nonmoving components, very low operating noise and overall high stability. However, low power generation efficiency of TEGs is still concerned for application in wider fields. The objective of the present study is to investigate the parameters affecting the performance and efficiency of segmented TEG. The physical parameters including length ratio, length-to-area ratio and thickness of conducting plate were considered. In addition, the effect of varying hot side temperature was analyzed. Performance of segmented TEG was compared based on the power generation and conversion efficiency. The results of the investigation showed that increasing Bi2Te3 length in the segmented TEG made up of Bi2Te3 and SiGe increased the maximum power generation and efficiency. As length-to-area ratio increased, the power generation decreased, however, efficiency increased slightly. In addition, as the hot side temperatu...

Experimental Investigation of Heat Transfer Characteristics of Battery Management System and Electronic Control Unit of Neighborhood Electric Vehicle

The increased need for mobility has necessitated a tremendous growth in transportation industry. The consumption of oil has increased many-fold leading to rapid deterioration of fossil fuel resources and increased greenhouse gas emissions. This has led to the finding alternative source of energy for vehicles in terms of battery based electric vehicles. Although electric vehicles are promising option for transportation, many issues like specific power, cost, vehicle range, battery thermal management etc. needs to be resolved efficiently in order to compete with internal combustion engine based vehicles. In this paper, an experimental study has been carried out to investigate the heat transfer characteristics of battery thermal management system and electronic control unit of neighborhood electric vehicle. The temperatures are measured at critical locations with varying velocity and varying altitude.

Experimental and Numerical Study on the Thermal Performances of Battery Cell and ECU for an E-Bike

In recent years, the traffic congestion, energy issues and environmental problems are occurred by increase in motor vehicles as well as population. The short and long range electrically operated vehicles like EVs (Electric vehicles) and LEVs (Light Electric vehicles) have been receiving much attention as a way to resolve these problems. Among these electric vehicle types, electric bicycle and electric scooters have the important components such as battery cell and ECUs (Electric Control Units). The component temperature is increased due to the heat generated by the continuous operation, which leads to decrease of the life cycle and performance. An experimental study was conducted to observe the effects of cooling performance of battery cell and heatsink case for ECU. Subsequently a numerical model was developed and cooling performance results of numerical study were validated by comparing it with experimental study. A new model is proposed with enhanced thermal performance for ECU heatsink.