The purpose of the notification is to cool the cryogenic chamber using nitrogen-cooled heat exchangers and a heat exchanger to cool the chamber with nitrogen. The way the cryogenic chamber is cooled b y nitrogen-cooled heat exchangers flowing through successive exchangers is that the cooling agent -nitrogen is passed through the bottom of the two-sectional exchanger (3),placed in a rare rib compartment (4) where the ribs (12) are separated from each other at a distance of 15 -20 mm and then passed to the bottom of the tray (5),placed in a cryo-sea(6),Also with rare ribs and then a cooling agent moves to the top of this exchanger(5) with thicker ribs (12) separated at a distance of 5 -7 mm and then a cooling agent to the top of the two-sectional exchanger(3) in the atrium (4) is given,with more dense buoyancy, with air flowing through both heat exchangers(3, 5) moving turbulently. Heat exchanger (5) for cryo-morphic nitrogen (6)is made from a rib pack(9),favourably rectangular mounted on shoulder-mounted tubes(12),where tubes are intertwined by ribs(9) forming tubular tubes. The heat exchanger (6) is characterised by a differentiated ribbing: less in the lower part and thicker in the upper part and the ratio of the length of the part with less in ribbing to the length of the part with thicker ribbing is from 1:3 to 1:4 and the factor inlet is at the bottom and the factor outlet is at the top, while ribs (9) are placed on tubes by means of casings and furthermore ribs(9) have an irregular surface.Przedmiotem zgłoszenia jest sposób schładzania kriogenicznej komory za pomocą wymienników ciepła schładzanych azotem oraz wymiennik ciepła do schładzania azotem. Sposób schładzania kriogenicznej komory za pomocą wymienników ciepła schładzanych azotem przepływającym przez kolejne wymienniki, polega na tym, że czynnik chłodzący - azot przepuszcza się przez dolną część dwusekcyjnego wymiennika (3), umieszczonego w przedsionku (4) o rzadkim użebrowaniu gdzie żebra (12) są oddalon
