Engineering, 19.02.2020 01:51 tenoi14

Consider a plan composite wall that is composed of two materials with thermal conductivities kA=0.09 W/mK and kB=0.03 W. mK, and thickness LA=8 mm and LB=16 mm. The contact resistance at the interface between the two materials is known to be 0.5 m2K/W. Material A is exposed to a fluid at 130oC with heat transfer coefficient of 10 W/m2K, and material B is exposed to a different fluid at 40oC with heat transfer coefficient of 20W/m2K. What is the magnitude of rate of heat transfer through the wall if its height is 2 m and depth is 2.5 m?

Answers: 1

Show answers

Another question on Engineering

Engineering, 03.07.2019 14:10

Amass of 1.5 kg of air at 120 kpa and 24°c is contained in a gas-tight, frictionless piston-cylinder device. the air is now compressed to a final pressure of 720 kpa. during the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the boundary work input during this process.

Answers: 2

Answer

Engineering, 04.07.2019 18:10

Afour cylinder four-stroke in-line engine has a stroke of 160mm, connecting rod length of 150mm, a reciprocating mass of 3kg and its firing order is 1-3-4-2. the spacing between cylinders is 100mm. i. show that the engine is in balance with regard to the primary inertia forces and primary 3. a and secondary inertia couples. li determine the out of balance secondary inertia force ii. propose ways of balancing this out of balance force and discuss the challenges that will arise

Answers: 3

Answer

Engineering, 04.07.2019 18:10

True or false (explain) (110)[111] is a slip system in bcc metals . the {111} family in fcc contains 8 planes. resolved shear stress (rss) in single crystals is just related to the applied stress. critical resolved shear stress (crss) in single crystal metals is direct proportional to the number of defects in the structure

Answers: 2

Answer

Engineering, 04.07.2019 18:10

What are the two (02) benefits, which may result from a successful implementation of preventive maintenance (pm) program in an organization? (clo3)a)- lean manufacturing b)-overlapping responsibilities c)-the planner is not qualified d)-accurate contractor information e)-reduction in equipment redundancies f)-accurate stores information

Answers: 3

Answer

You know the right answer?

Consider a plan composite wall that is composed of two materials with thermal conductivities kA=0.09...

Questions