.ClaRa_Obsolete.Components.Furnace.BaseClasses.CombustionChamberBase.Burning_time .ClaRa_Obsolete.Components.Furnace.BaseClasses.CombustionChamberBase.Burning_timemodel Burning_time = ClaRa.Components.Furnace.GeneralTransportPhenomena.BurningTime.ConstantBurningTime;