Title: Development of a sorption thermal energy storage to support the thermal management of hybrid vehicles

Authors: Georg Engel; Roland Kerschenbauer; Markus Hinteregger; Gregor Gregorcic; Anna Maria Fulterer; Waldemar Wagner; Wim Van Helden

Addresses: AVL List GmbH, Hans-List Platz 1, 8020 Graz, Austria ' AEE – Institute for Sustainable Technologies, Feldgasse 19, 8200 Gleisdorf, Austria ' AVL List GmbH, Hans-List Platz 1, 8020 Graz, Austria ' AVL List GmbH, Hans-List Platz 1, 8020 Graz, Austria ' AEE – Institute for Sustainable Technologies, Feldgasse 19, 8200 Gleisdorf, Austria ' AEE – Institute for Sustainable Technologies, Feldgasse 19, 8200 Gleisdorf, Austria ' AEE – Institute for Sustainable Technologies, Feldgasse 19, 8200 Gleisdorf, Austria

Abstract: A closed sorption thermal energy storage is developed for thermal management of hybrid vehicles. The storage is charged using waste heat of the combustion engine, and discharged to provide heating and cooling power for, e.g., battery and cabin. SAPO-34 as adsorber and different adsorber designs, including coating and granules, are assessed experimentally. A functional storage system proves a cooling power of 1 kW for 30 min (2 kW peak) in experiment. In an optimised system design, this indicates KPIs of about 27 Wh/l resp. 27 Wh/kg and 55 W/l resp. 55 W/kg for cooling. A co-simulation Trnsys/Simulink shows energy savings of 60% for cooling the battery during a worldwide harmonised light vehicles test cycle at elevated temperature levels, saving 80 s for heating a chilled battery to 20°C and saving 26 s for preheating the combustion engine to 80°C.

Keywords: thermal management; e-mobility; thermal storage; closed adsorption; sapo-34; co-simulation.

DOI: 10.1504/IJVD.2021.120411

International Journal of Vehicle Design, 2021 Vol.85 No.2/3/4, pp.139 - 153

Accepted: 29 Aug 2020
Published online: 19 Jan 2022 *

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