Experimental assessment of a hybrid radiator for pure electric vehicle traction system: a 4E approach (energy, exergy, environment and economy)
摘要
A hybrid radiator is proposed for efficient operation of pure electric vehicle under extreme ambient conditions integrating the radiator of traction system with the vehicle’s air-conditioning system. A 4E (energy, exergy, environment and economy) approach is implemented providing a holistic view on the performance of the developed hybrid cooling system in contrast with the conventional radiator. Results obtained based on the in-house developed experimental setup showed good agreement with the classical ɛ-NTU algorism. The algorism is employed in the energy and exergy analysis to quantify the heat transfer rate, entropy generation and exergetic efficiency of the envisaged system. Furthermore, environmental and economic assessment is made to identify the effect of the cooling system on the emissions of greenhouse gas, carbon dioxide (CO2), in relation with the rate of electrical energy consumption by the electric vehicle and the benefits over the operational cost of the electric vehicle. The envisaged system signifies 40–65% enhancement in energetic performance, 15% drop in exergy with 1.6 tonne reduction in CO2 emissions, holding a guaranteed savings of INR 14,000 over the battery life of the electric vehicle. The heat transfer performance of the radiator is enhanced by 4.5 kW. To complement the energy and exergy analysis, a thermodynamic cycle analysis is performed to showcase the impact of the hybrid cooling in energy and exergy front. The findings of the proposed system facilitate in realizing high torque and power density traction system for electric mobility.