Acryogenic liquid line in an ultra-low temperature tissue storage facility has a diameter of 0.05 cm, a surface temperature of -163 °c, and a surface emissivity of 0.2. this line is placed at 0.15m away from a pipe with a diameter of 0.1 m, carrying heated liquid at 47°c and having a surface emissivity of 0.5. the pipe and the line are parallel to one another and are exposed to the sky, which on a clear night can be assumed to have the same temperature as extra-terrestrial space, of 4 k. neglect convection effects in your analysis. a.) draw the corresponding radiation resistance network and label what each node. b) calculate the net radiation heat transfer rate per unit length to the line carrying the cryogenic c) propose a solution to reduce to half the net radiation heat transfer rate per unit length of line(must be justified mathematically). d) calculate the net radiation heat transfer rate per unit length to the line carrying the cryogenic fluid if the line and the pipe are moved inside a large enclosure with adiabatically insulated walls of 0.6 emissivity. for simplicity, when answering this question, assume that the walls of the enclosure have a temperature of 4k.