Engineering, 14.09.2019 05:30 tyneshiajones124
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: 1
Engineering, 04.07.2019 18:10, Tyrant4life
Draw the engineering stress-strain curve for (a) bcc; (b) fcc metals and mark important points.
Answers: 1
Engineering, 04.07.2019 18:20, annette211pdd8v9
For a gate width of 2 m into the paper, determine the force required to hold the gate abc at its location.
Answers: 1
Engineering, 04.07.2019 19:10, gabrielaperezcz
Air inially occupying a volume of 1 m2 at 100 kpa, 27 c undergoes three internally reversible processes in series. process 1-2 compression to 500 kpa during which pv constant process 2-3 adiabatic expanslon to 100 kpa process 3-1: constant-pressure expansion to 100 kpa (a) calculate the change of entropy for each of the three processes. (b) calculate the heat and work involved in each process. (c) is this cycle a power cycle or refrigeration cycle?
Answers: 3
Heat transfer in an iron: consider the base plate of a 1200- w household iron that has a thickness...
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