Multi-objective optimization of an automotive louvered fin-flat tube condenser for enhancing HVAC system cooling performance

Shojaeefard, Mohammad Hassan; Molaeimanesh, Gholam Reza; Yarmohammadi, Ali; Changizian, Sina

doi:10.1016/j.applthermaleng.2017.07.055

Cited by 26 publications

(7 citation statements)

References 35 publications

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“…Advanced thermal system development requires accurate simulation model that could be challenging to develop especially because the thermal transfer can be different depending on the operating conditions [123]. However, detail component thermal models enables further development even the basic thermal components and create optimal designs [124].…”

Section: B Thermal Energy Buffering and Heat Exchangersmentioning

confidence: 99%

Review of Cabin Thermal Management for Electrified Passenger Vehicles

Lajunen

Yang

Emadi

2020

IEEE Trans. Veh. Technol.

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The technical maturity and rapidly increasing market share of electrified vehicles have given more importance to the cabin thermal management. Efficient thermal management has a key role to maintain adequate electric operating range, protect components from aging and ensure passenger comfort. This research comprehensively reviews the cabin thermal management systems for electrified vehicles. Various vehicle cabin thermal modeling techniques and the key concepts for cabin thermal comfort have been discussed. Different technical and operational solutions of the cabin thermal management in hot and cold climate conditions are evaluated. The recent developments including heat pumps, thermal system control, passive thermal management, and cabin preconditioning to increase thermal management efficiency are analyzed. The results show that increasing amount of research is focusing on improving the thermal efficiency of the individual electrical components and the vehicle level systems. However, new solutions will be required for reducing the cabin thermal load under hot conditions and improving the heating system operational flexibility and efficiency in cold climates.

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Section: B Thermal Energy Buffering and Heat Exchangersmentioning

confidence: 99%

Review of Cabin Thermal Management for Electrified Passenger Vehicles

Lajunen

Yang

Emadi

2020

IEEE Trans. Veh. Technol.

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“…The comprehensive evaluation factor, e, is defined in eq. 5, a greater value of e implies a higher comprehensive heat transfer performance [5]. The quality of the grid has a very important influence on the accuracy of the numerical simulation.…”

Section: Data Processingmentioning

confidence: 99%

Optimization of a micro-channel structure of an elliptical louver fin

et al. 2019

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The influence of the louver fin's structure on the heat transfer performance of a parallel flow gas cooler is studied, and a 3-D model for an elliptical louver fin is simulated for analysis of the heat transfer and flow resistance characteristics of the fin. The micro-channel structure of the fin is optimized to give the best comprehensive performance evaluation by suitable choice of fin's thickness and the space between the adjacent louvers for given range of Reynolds number.

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“…Many such studies on simulating defogging systems by numerical calculations have been done. In addition, Shojaeefard et al determined the relevant area for judging defogging performance on the windshield and evaluated from the temperature distribution on the windshield using computational fluid dynamics (CFD) [2]. In the present study, the defogging performance is evaluated as the defogged area on a windshield predicted by numerical simulation.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Defogging Performance, Thermal Comfort, and Energy Saving for HVAC System Optimization in Passenger Vehicles

et al. 2019

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The heating, ventilation, and air-conditioning (HVAC) system in a vehicle is used for both defogging the windshield and ensuring the thermal comfort of passengers. A challenge is that energy savings in the HVAC system lead to decreased system performance. The three objective functions, i.e. defogging performance, thermal comfort, and energy savings, these must be considered in parallel to find the optimized control strategy. In the present study, a transient numerical simulation of the in-vehicle environment is performed and the dependency of performance on the air flow rate and supplied air temperature is analyzed. The criteria of defogging performance and thermal comfort are determined as the constrained conditions. The results show a trade-off relationship between the air flow rate and air temperature in defogging performance and thermal comfort; however, their sensitivities depend on the conditions and the time elapsed. As for transient defogging performance, the air flow rate has greater impact than airflow temperature. The air flow rate and the air temperature are comparable in their effects on equivalent temperature, which is employed as the index of the thermal environment. The blowing condition range that fulfills the criteria makes a transition to a low-energy condition with time elapsed. A control strategy for the air flow rate and temperature is derived considering the transient and steady-state conditions.

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Multi-objective optimization of an automotive louvered fin-flat tube condenser for enhancing HVAC system cooling performance

Cited by 26 publications

References 35 publications

Review of Cabin Thermal Management for Electrified Passenger Vehicles

Review of Cabin Thermal Management for Electrified Passenger Vehicles

Optimization of a micro-channel structure of an elliptical louver fin

Analysis of Defogging Performance, Thermal Comfort, and Energy Saving for HVAC System Optimization in Passenger Vehicles

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