TÜV SÜD: Economical heating adds valuable kilometres

Power-guzzling heating and air-conditioning systems are a major cause of low range in electric vehicles. Reducing power consumption can add extra kilometres to the range of a vehicle and place its driver at the head of the mobility race. For this reason, the experts at TÜV SÜD Automotive concentrate their attention on individual vehicle components when measuring vehicle range in line with the TÜV SÜD E-Car Cycle (TSECC). Initial results show that power units tailored to the needs of electric vehicles can slash power consumption by up to 15 per cent, adding an average of 15 kilometres to the range of the vehicle. Electric mobility is one of TÜV SÜD's key themes at the IAA, held in Frankfurt am Main from 15 to 25 September 2011.

According to manufacturers' specifications, the average range of today's electric vehicles is approximately 150 kilometres - but this range can be slashed by more than half when temperatures plummet. The reason, in addition to the fact that battery performance declines in below-zero temperatures, is primarily the high power consumption of heating and air-conditioning systems. To counteract this effect, electric vehicles generally use special types of heating systems – electrically or petrol-driven designs which may be with or without air-conditioning. However, these systems may discourage consumers previously used to unrestricted mobility and pleasant temperatures from buying electric cars.

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