Taxi Heat Storage Units to Save Seoul 1.8 Billion Won

The Seoul City Government announced on Feb. 9 that it will pursue an initiative to reduce air pollution by installing heating devices on taxi that can work even when the engine is off.


Air pollutants originating from cars represent 63 percent of the total, a major source of greenhouse gas emissions. Furthermore, fuel is wasted when allowing idling vehicles to run their engines. 

To address the problem, Seoul City made a device last year that can gather up to 90 degrees of heat from a coolant system in the engine while the car is running. The gathered heat can be used for heating the car when the engine is turned off. The heating device is composed of an engine hour meter, a circulating pump, and an auxiliary battery.  

The city government installed the device on a test taxi for the month of December last year as an experiment. After turning off the engine and circulating water up to 90 degrees, the time necessary for the temperature inside the taxi to drop to 36.5 degrees was measured. It was found that it was possible to heat the car for over 35 minutes.

After using the device for 99.2 hours, the car saved 118.8L of fuel, or 131,860 won (US$120.36). On top of that, it was possible to reduce the amount of CO2 emissions by 106 kg. 

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See on Scoop.itHeat energy recovery technology


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