Direct free cooling

摘要: The invention relates to a mixing box (20) for regulating temperature, having base body (1) through which at least one air stream can be conducted and in there is arranged filter device (2, 3), the conducted. guided by flap valve assembly which, with regard good regulation of temperature low energy consumption, configured developed such way that comprises three valves (4, 5, 6), controlled as function parameter, particular an environmental parameter. further system method operating system.