Evaporator with Integrated Ejector for Automotive Cabin Cooling

Brodie, Bradley R.; Takano, Yoshiaki; Gocho, Mika

doi:10.4271/2012-01-1048

Cited by 14 publications

(4 citation statements)

References 2 publications

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“…9. It is shown that the AC system equipped with heat pipes has lower power consumption of about 28% in average close to that at ejector use in Brodie's work 13) . The decrease in the power consumption is slightly decline by raising the outdoor temperature.…”

Section: Fig 5: Temperature Profiles Of Testingmentioning

confidence: 81%

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Performance Enhancement of Electric Bus Air Conditioning System by Heat Pipe Equipment (Experimental Study)

Nuriyadi¹,

Putra²,

Alhamid³

et al. 2023

Evergreen

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Electric Vehicles (EVs) are considered a significant way to minimize dependence on fossil fuel. As one of the most energy-consuming auxiliary components in EVs, air conditioning should enhance its performance and minimize the power and energy consumption. In this experiment, a modular air conditioner prototype with additional heat pipe components for an electric bus air conditioner has been successfully constructed. In this study, a modular AC system testing was carried out before and after using heat pipes at various ambient temperature conditions. The results reveal that the heat pipes utilization in the modular AC system for electric buses increases the cooling capacity by about 15%, and reduces the power input level of the AC system by about 28%. This has contributed to raising of the system's Energy Efficiency Ratio (EER) of around 30%, and the heat pipe's average effectiveness of 7,5%.

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Section: Fig 5: Temperature Profiles Of Testingmentioning

confidence: 81%

“…A vapor compression air conditioning refrigeration system with an ejector on Prius electric vehicle was introduced by Brodie et al 13) . A two-phase ejector was used to raise up the system's efficiency, by its insertion into the evaporator to minimize device volume.…”

Section: Introductionmentioning

confidence: 99%

Performance Enhancement of Electric Bus Air Conditioning System by Heat Pipe Equipment (Experimental Study)

Nuriyadi¹,

Putra²,

Alhamid³

et al. 2023

Evergreen

View full text Add to dashboard Cite

show abstract

“…There are plenty of efforts having been made to improve the thermal efficiency of the VCR-DH system. In Toyota Prius, a two-phase ejector was employed to improve the system efficiency [23]. The ejector was integrated into the evaporator to reduce the volume of the device.…”

Section: Hvac System In Electric Vehiclesmentioning

confidence: 99%

Thermal Management of Electrified Propulsion System for Low-Carbon Vehicles

Huang

Wang

et al. 2020

Automot. Innov.

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An overview of current thermal challenges in transport electrification is introduced in order to underpin the research developments and trends of recent thermal management techniques. Currently, explorations of intelligent thermal management and control strategies prevail among car manufacturers in the context of climate change and global warming impacts. Therefore, major cutting-edge systematic approaches in electrified powertrain are summarized in the first place. In particular, the important role of heating, ventilation and air-condition system (HVAC) is emphasised. The trends in developing efficient HVAC system for future electrified powertrain are analysed. Then electric machine efficiency is under spotlight which could be improved by introducing new thermal management techniques and strengthening the efforts of driveline integrations. The demanded integration efforts are expected to provide better value per volume, or more power output/torque per unit with smaller form factor. Driven by demands, major thermal issues of high-power density machines are raised including the comprehensive understanding of thermal path, and multiphysics challenges are addressed whilst embedding power electronic semiconductors, non-isotropic electromagnetic materials and thermal insulation materials. Last but not least, the present review has listed several typical cooling techniques such as liquid cooling jacket, impingement/spray cooling and immersion cooling that could be applied to facilitate the development of integrated electric machine, and a mechanic-electric-thermal holistic approach is suggested at early design phase. Conclusively, a brief summary of the emerging new cooling techniques is presented and the keys to a successful integration are concluded.

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“…The AC system frequently worked on the defrosting cycle in cold weather conditions, which immensely affected the heating capacity and the heating performance coefficient. Denso developed an ejector integrated evaporator, as shown in Figure 6, to reduce the power consumption of vehicle cabin AC systems [62]. [58].…”

Section: Novel Componentsmentioning

confidence: 99%

Progress in Heat Pump Air Conditioning Systems for Electric Vehicles—A Review

Qing-hong

2016

Energies

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Electric vehicles have become increasingly popular in recent years due to our limited natural resources. As a result, interest in climate control systems for electric vehicles is rising rapidly. According to a variety of research sources, the heat pump air conditioning system seems to be a potential climate control system for electric vehicles. In this paper, an extensive literature review has been performed on the progress in heat pump air conditioning systems for electric vehicles. First, a review of applications of alternative environmentally friendly refrigerants in electric vehicles is introduced. This is followed by a review of other advanced technologies, such as the inverter technology, innovative components and the system structure of the heat pump air conditioning system for electric vehicles. Lastly, recent developments in multiple source heat pump systems are presented. The use of these advanced technologies can provide not only sufficient refrigerating capacity for the electric vehicle, but also higher climate control system efficiency. We believe that ideal practical air conditioning for electric vehicles can be attained in the near future as the mentioned technical problems are gradually resolved.

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Evaporator with Integrated Ejector for Automotive Cabin Cooling

Cited by 14 publications

References 2 publications

Performance Enhancement of Electric Bus Air Conditioning System by Heat Pipe Equipment (Experimental Study)

Performance Enhancement of Electric Bus Air Conditioning System by Heat Pipe Equipment (Experimental Study)

Thermal Management of Electrified Propulsion System for Low-Carbon Vehicles

Progress in Heat Pump Air Conditioning Systems for Electric Vehicles—A Review

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