Within the framework of a research cooperation between Karlsruhe Institute of Technology (KIT) and Daimler AG, an approach was developed which by means of a thermal short-term storage system enables temporal decoupling of energy supply and use in the air-conditioning system. The advantage of such decoupling consists in the fact that the time-varying efficiencies in energy conversion chains are fully utilized and that the overall efficiencies of vehicles are thus increased. Based on this approach, the respective demands on short-term cold storage devices were derived and a corresponding system was designed together with Valeo Klimasysteme GmbH. Unlike the well-known storage evaporators used for vehicles with combustion engine start/stop function, the developed storage device has a considerably higher storage capacity and actively controllable charging/discharging functions that operates without further auxiliary energy. To conclude, different operating strategics for short-term cold storage devices in air-conditioning systems are introduced and possible savings are pointed out.
Reduction of CO2 Emissions by Use of a Thermal Short-term Storage System within the A/C System
2014
14 Seiten, Bilder, 7 Quellen
Aufsatz (Konferenz)
Englisch
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