Abstract:

The transition towards e-mobility raises the necessity for a smart thermal management of vehicles. Waste heat becomes sparsely available and only at low temperatures. In addition, the battery requires a narrow temperature window. The present work discusses the design and an experimental assessment of a compact thermal energy storage for the particular purpose of cooling the battery of a hybrid vehicle. A sorption closed thermal energy storage system is designed for this application, targeting at both high energy density and high power density. In a hybrid vehicle, waste heat from the combustion engine may be used to charge the thermal storage. These requirements and the corresponding temperature levels motivate a storage system design involving a fixed bed heat exchanger coated with SAPO-34. A thermal energy storage system is designed, assembled and investigated experimentally in a dedicated test rig.