Increased requirements concerning the reduction of energy consumption and CO2 emissions demand improvements in the transport and the stationary energy supply sector. In this paper a combined energy network for individual mobility and buildings is potentially analyzed under different approaches. It is shown that a reasonable amount of waste heat is still stored in a vehicle after driving which can be used for supporting the building's heating system. On the other hand, preconditioning of thermal masses like the internal combustion engine, the driver's cabin or even charging an integrated heat storage system, with the heating infrastructure of buildings can reduce energy consumption and CO2 emissions. Especially the preconditioning of highly electrified vehicles provides a high potential by not using exergy (high quality energy respectively electric energy) for cabin heating. Another approach using the combustion engine of a range extended electric vehicles (REEV) as a mobile combined heat and power generation (CHP) unit is presented. For the electric charging of the traction battery with the CHP unit the savings in primary energy consumption and CO2 emissions are analyzed. The results show that the CO2 emissions strongly depend on the fuel type. The use of lower carbon fuel types like LPG or CNG for propulsion clearly reduces the CO2 emissions further. The mechanical efficiency and thermal efficiency of the ICE have also a strong impact. To increase the latter it is necessary recover heat from the exhaust gas. Depending on the target objective, a high mechanical efficiency improves the best point for CO2 emission, whereas a high fuel utilization rate is better for reducing the primary energy consumptions.
Advanced thermal management - Overall CO2 reduction by a combined energy supply for an electrified vehicle and buildings
2013
17 Seiten, 12 Bilder, 3 Tabellen, 15 Quellen
Aufsatz (Konferenz)
Englisch