Konvekta AES-Mode: energy consumption of e-bus heating can be reduced thanks to a new software used together with the CO2 heat pump. According to tests carried out in Germany, the system requires half energy to generate the same amount of heat.

With e-mobility, heating and air-conditioning system suddenly became just as important as the drive, because electric mobility requires no waste heat to keep the vehicle at the right temperature. They are also essential to determine energy saving and electric bus range.

Konvekta AES-Mode for CO2 heat pump

A CO2 heat pump system draws a large part of the required energy from the air and not from the battery. This system operates more than 50% more efficiently than an electric system, Konvekta points out. The new software add-on module, the AES mode (Additional Energy Storage), eliminates the need for an additional heater.

Source: Konvekta

The supplier says that “with the new AES mode module, the CO2 heat pump system is able to distribute 100% of the generated energy according to demand. This means, for example, that it can also use 100 % of the available heat for hot water preparation. Another advantage of the system is that it can take over the entire pre-conditioning process independently, even at low temperatures”.

OVB, Offenbach’s public transport company (Germany), currently has the latest generation of Konvekta CO2 heat pumps with AES mode in testing. Here the results as shared by Konvekta: “The additional electric heater worked in the first heating phase with a COP (Coefficient of Performance) of 0.9 – the AES mode managed this process with a COP of >1.6. This means that in order to generate 1 kWh of heating energy, the additional electric heater needed 1.23 kWh of electricity, but the CO2 heat pump with AES mode only needs 0.63 kWh. The transport company will no longer have to pay for this 0.6 kWh of energy”.


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