Engineering, 13.11.2019 20:31 randlemccray1907
Heat transfer in an iron: consider the base plate of a 1200- w household iron that has a thickness of l = 0.5 cm, base area of a = 300 cm2 , and thermal conductivity of k = 15w/m–k. the inner surface of the base plate is subjected to uniform heat flux generated by the resistance heaters inside, and the outer surface is exposed to ambient air and large surroundings at t_infinity = t_surface. the areas of both the inner and outer surfaces are a_s = 0.040 m2. an approximately uniform heat flux of q'' = 1.25x10^4 w/m2 is applied to the inner surface of the base plate, and the convection coefficient at the outer surface is h = 10 w/m2*k.(a) sketch the system and simplify the energy balance equation for the base plate, taking radiative effects into account.
Answers: 2
Engineering, 03.07.2019 23:20, abbz13
Two technicians are discussing the intake air temperature (iat) sensor. technician a says that the computer uses the iat sensor as a backup to the engine coolant temperature (ect) sensor. technician b says that the powertrain control module (pcm) will subtract the calculated amount of fuel if the air measures hot. who is correct
Answers: 3
Engineering, 04.07.2019 18:10, oshawn108
Ahot wire operates at a temperature of 200°c while the air temperature is 20°c. the hot wire element is a tungsten wire of 5 um diameter and 2 mm in length. plot using excel current, heat transfer and heat generated by the wire for air velocity varying from 1-10 m/s in steps of lm/s? matlab the sensor voltage output, resistance, or assume nu 0.989 re033pr13 take air properties at tr (200°c20°c)/2 = 110°c properties of tungsten: c 0.13 kj/kg. k 3 p 19250 kg/m k (thermal conductivity) = 174 w/m. k
Answers: 2
Engineering, 04.07.2019 18:10, juansoto227711
Journeyman training is usually related (clo2) a)-to specific tasks b)-to cost analysis of maintenance task c)-to control process to ensure quality d)-to installation of machinery
Answers: 2
Heat transfer in an iron: consider the base plate of a 1200- w household iron that has a thickness...
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