Emitter for discharge of low-potential heat into space with anti-meteoroid protection

A variant of the refrigerator emitter made of aluminum alloy with anti-meteoroid protection of the tube with a coolant in the form of a bumper, which is a radiating surface, is presented. An approximate method for calculating the stationary thermal state and pressure losses in the device has been developed. A prototype was made and tested. It is shown that the calculated and experimental data are in good agreement. A computational analysis of an efficient (efficiency parameter is equal to 3.27 kg/m$^2$) protected (the probability of non-damage within two years is equal to 0.97) device made of aluminum alloy with a power of 570 kW is performed when the coolant is cooled from 250 to 110$^\circ$C.