subject
Engineering, 24.09.2019 03:00 jprofaci29

Consider a plane composite wall that is composed of two materials of thermal conductivities ka = 0.1 w/m*k and kb = 0.04 w/m*k and thicknesses la = 10 mm and lb = 20 mm. the contact resistance at the interface between the two materials is known to be 0.30 m2*k/w. material a adjoins a fluid at 200°c for which h = 10 w/m2*k, and material b adjoins a fluid at 40°c for which h = 20 w/m2*k. (a) what is the rate of heat transfer thro

ansver
Answers: 2

Another question on Engineering

question
Engineering, 04.07.2019 18:10
The higher the astm grain-size number, the coarser the grain is. a)-true b)-false
Answers: 3
question
Engineering, 04.07.2019 18:10
The thermal expansion or contraction of a given metal is a function of the f a)-density b)-initial temperature c)- temperature difference d)- linear coefficient of thermal expansion e)- final temperature f)- original length
Answers: 2
question
Engineering, 04.07.2019 18:10
Which one from below is not one of the reasons of planning failures? (clo3) a)-planner is careless. b-planner spend less time in the field but more time on the desk c)-planner is not qualified d)-planner does not have sufficient time to properly plan
Answers: 3
question
Engineering, 04.07.2019 18:20
Athin walled concentric tube exchanger is used to cool engine oil from 160°c to 60°c with water that is available at 25°c acting as a coolant. the oil and water flow rates are each at 2 kg/s, and the diameter of the inner tube is 0.5 m and the corresponding value of the overall heat transfer coefficient is 250 w/m2. oc. how long must the heat exchanger be to accomplish the desired cooling? cpwater=4.187 kj/kg-candcpengine el=2.035 kj/kg·°c, oil . 120]
Answers: 1
You know the right answer?
Consider a plane composite wall that is composed of two materials of thermal conductivities ka = 0.1...
Questions
question
Chemistry, 31.08.2021 06:00
question
Mathematics, 31.08.2021 06:00
question
Physics, 31.08.2021 06:00
question
Business, 31.08.2021 06:00
question
Mathematics, 31.08.2021 06:00
question
Mathematics, 31.08.2021 06:00
Questions on the website: 13722360