Method and system for cooling hot objects

An apparatus for cooling an object by means of a gas, the apparatus comprising a cooling box with an opening for receiving an object to be cooled,

• wherein at least one heat sink is provided inside the cooling box for cooling of the gas,
• wherein the apparatus includes at least one infra sound pulsator arranged to provide an infra sound into said cooling box to improve heat exchange both between the gas and a cooling surface of the at least one heat sink, and between the gas and the object, and
• wherein the apparatus comprises a gripper unit with at least one gripper arm arranged to grip the object at a location outside the cooling box, move said component into the cooling box through the opening and, after cooling, move said component through the opening to a location outside the cooling box, the at least one gripper arm being arranged to extend into said cooling box during cooling.