Begehbare Kühlanlage, insbesondere zur Kryokonservierung biologischer Proben, und Verfahren zu deren Betrieb

A cooling system (1), especially for cryopreserving biological samples (2), comprises a cooling chamber (100) delimited by a bottom area (110), side walls (120), and a top area (130), and a cooling device (200) for cooling the cooling chamber (100) using liquid nitrogen (220). The bottom area (110) is designed for direct cooling using the liquid nitrogen, and the cooling chamber (100) is dimensioned such that an operator (3) can access and move around in the cooling chamber (100). The bottom area (110) has a platform (111) which is permeable to vapor of the liquid nitrogen (220) and forms a support zone for the operator (3). Methods for operating the cooling system are also described.