XERIC climate-control system for energy-efficient electric vehicles: First experimental results and numerical evaluation of the overall performance

Isetti, Carlo; Nannei, E.; Lazzari, Stefano; Cerrai, Bernardo; Nari, Sergio

doi:10.1109/ever.2018.8362410

Cited by 2 publications

(1 citation statement)

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“…Two series of experiments (A2 and A3), each one for different concentrations of LiCl solution, were conducted to investigate the performance of the 3F-CMC under various operating conditions, as listed in Table 2. In addition, we also compared our numerical results with another set of experiments (A1) that was previously reported [26]. The thermo-physical properties of the spacer, membrane, and LiCl solution used in the simulation are summarized in Table 3.…”

Section: Validationmentioning

confidence: 99%

Investigation on the Performance of a Compact Three-Fluid Combined Membrane Contactor for Dehumidification in Electric Vehicles

et al. 2019

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In this paper, the performance of a compact Three-Fluid Combined Membrane Contactor (3F-CMC) is investigated using Computational Fluid Dynamics (CFD), supported and validated with a good agreement by an experimental campaign made on a fully working prototype. This internally-cooled membrane contactor is the core component of a hybrid air conditioning system for electric vehicles (EVs) developed in a successful H2020 project called XERIC. In the adopted numerical approach, the conjugate heat and mass transfer inside the 3F-CMC is described by non-isothermal incompressible flows and vapor transport through a PTFE hydrophobic membrane. The sensitivity of the 3F-CMC performance to air/desiccant flow rates, temperature, humidity, and desiccant concentration is analyzed numerically through the validated CFD codes. According to this study, the moisture removal increases by the inlet humidity ratio, nearly linearly. Under the considered conditions (where the inlet air temperature is 26.2 °C), when the inlet relative humidity (RH) is 75% the moisture removal is about 450% higher than the case RH = 37%, while the absorption effectiveness declines about 45%. Furthermore, this study shows that the amount of absorbed vapor flux rises by increasing the airflow rate; on the other hand, the higher the airflow rate, the lower is the overall absorption efficiency of the 3F-CMC. This investigation gives important suggestions on how to properly operate a 3F-CMC in order to achieve the requested performance, especially in hot and humid climates.

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Section: Validationmentioning

confidence: 99%

Investigation on the Performance of a Compact Three-Fluid Combined Membrane Contactor for Dehumidification in Electric Vehicles

et al. 2019

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3D-CFD analysis of the effect of cooling via minitubes on the performance of a three-fluid combined membrane contactor

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et al. 2019

International Journal of Low-Carbon Technologies

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A 3D computational fluid dynamics model was adopted to study the effects of internal cooling on the performance of a three-fluid combined membrane contactor (3F-CMC), in the presence of minitubes in solution and a spacer in the air channel. This compact 3F-CMC is part of a hybrid climate-control system, recently developed for serving in electric vehicles. For the studied operating conditions, results show that the absorption and sensible effectiveness parameters increase up to 77% and 124% by internal cooling, respectively. This study also reports 3D flow effects on the heat and mass transfer enhancement inside the contactor, with implications for further design improvements.

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XERIC climate-control system for energy-efficient electric vehicles: First experimental results and numerical evaluation of the overall performance

Cited by 2 publications

References 5 publications

Investigation on the Performance of a Compact Three-Fluid Combined Membrane Contactor for Dehumidification in Electric Vehicles

Investigation on the Performance of a Compact Three-Fluid Combined Membrane Contactor for Dehumidification in Electric Vehicles

3D-CFD analysis of the effect of cooling via minitubes on the performance of a three-fluid combined membrane contactor

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