The components of an electronic system are located in a 0.80-m-long horizontal duct whose cross section is 0.60 m * 0.60

[answerhappygod]

The Components Of An Electronic System Are Located In A 0 80 M Long Horizontal Duct Whose Cross Section Is 0 60 M 0 60 1 (336.37 KiB) Viewed 49 times

The components of an electronic system are located in a 0.80-m-long horizontal duct whose cross section is 0.60 m * 0.60 m. The components in the duct are not allowed to come into direct contact with cooling air, and thus are cooled by air at 30°C flowing over the duct with a velocity of 200 m/min. The surface temperature of the duct is not to exceed 65°C, and the location of the system is at 3000-m altitude where the atmospheric pressure is 70.12 kPa. Determine the total power rating of the electronic devices that can be mounted into the duct. The value of k = 0.02717, v= 1.774 x 10-5, and Pr = 0.7235. Х Electronic components inside 30°C 200 m/min 65°C Air The total power rating of the electronic devices that can be mounted into the duct is 7W.