Grayson Thermal Systems makes cooling and thermal systems mainly for bus and coach makers, but also for other fields like makers of mining machinery. Their latest system eComfort 300 for advanced heating and cooling uses high-efficiency reversible heat pump technology.
DOGA contributes to the eComfort 300 system with an expansion tank which is designed for integrated battery thermal management, and which allows for simultaneous battery cooling and passenger heating in the e-bus. The expansion with a capacity of 5 liters comes with a 3-step level sensor (minimum, medium and maximum).
In parallel, another tank has been provided for diesel engine buses.