Engineering, 16.10.2019 05:10 amberc5110
Alarge furnace in a heat treatment factory is located in close proximity to another large piece of equipment. both the furnace and equipment are large enough that the gap between them can be characterized by two infinitely-large parallel plates. it is critical that the surfacetemperatureof the equipment(ε=0.5)remains at a steady450k. the surface temperature of the furnace wall(ε=0.8)is 800k. to block radiation, you build a radiation shield that consists of 5 identical thin aluminum sheets, each with an emissivity of ε=0.1 on both sides. the aluminum sheets are positioned with thin gaps between them. calculate the net rate of radiation heattransfer, per unit area, between the furnace wall and equipment surface with 0, 1, and all 5 ofthese radiation shields in placefor these temperature conditions.
Answers: 2
Engineering, 04.07.2019 18:10
Fluids at rest possess no flow energy. a)- true b)- false
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Engineering, 04.07.2019 18:10
Ajournal bearing has a journal diameter of 3.250 in with a unilateral tolerance of 20.003 in. the bushing bore has a diameter of 3.256 in and a unilateral tolerance of 0.004 in. the bushing is 2.8 in long and supports a 700-lbf load. the journal speed is 900 rev/min. find the minimum oil film thickness and the maximum film pressure for both sae 20 and sae 20w-30 lubricants, for the tightest assembly if the operating film temperature is 160°f. a computer code is appropriate for solving this problem.
Answers: 3
Engineering, 04.07.2019 18:10
Slip occurs via two partial dislocations because of (a) the shorter path of the partial dislocation lines; (b) the lower energy state through partial dislocations; (c) the charge balance.
Answers: 1
Engineering, 04.07.2019 19:20
Aseries piping system conveys methyl alcohol. the system consists of 70 m of 1- nominal pipe follow by 50 m of 2-nominal pipe, both schedule 40 commercial steel. the 1-nominal pipe contains 3 90° elbows (regular) anda fully open gate valve, all threaded. the pressure drop through the system is 150 kpa. determine the volume flow rate through the system that is horizontally laid.
Answers: 1
Alarge furnace in a heat treatment factory is located in close proximity to another large piece of e...
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