FIELD: autonomous cooling systems. SUBSTANCE: closed nitrogen loop of autonomous cooling system includes reservoir filled with liquid nitrogen, submersible centrifugal pump, air cooling panel placed in cooled heat-insulated vessel, vortex tube, mixing reservoir, throttle valve, Stirling cryogenic machine, Dewar flask, high-pressure pump and check valve. Mixing reservoir is connected with vortex tube by cold and hot flow lines with heat exchangers. Cooling loop of cryogenic machine passes through cold flow heat exchanger; it includes pump and heat exchanger communicated with surrounding medium. Cryogenic machine is driven by electric motor, special-purpose thermal engine or engine of transport facility. Hot flow heat exchanger is communicated with surrounding medium. EFFECT: avoidance of losses of nitrogen; possibility of thermostating various objects without disturbing composition of air. 1 dwg
