The two ends of the 2-meter (2L) brass pipe, located horizontally, with its circumference insulated, are brought into contact with the material at a certain temperature at t = 0. In the center of the brass pipe (z = 0 m), there is a central thermometer and a welding thermometer at the left side of the pipe, approximately L meter from the center. Accordingly, calculate the time when the temperature in the central thermometer shows 100ºC. For the brass pipe: α = 86 kcal / hmºC; 0.1400 kcal / kgºC; Ï = 8500 kg / m3.
