subject
Engineering, 27.11.2019 21:31 joybeth9591

Atotal of 10 rectangular aluminum fins (k 5203 w/m·k) are placed on the outside flat surface of anelectronic device. each fin is 100 mm wide, 20 mm highand 4 mm thick. the fins are located parallel to each otherat a center-to-center distance of 8 mm. the temperature atthe outside surface of the electronic device is 60°c. the airis at 20°c, and the heat transfer coefficient is 100 w/m2.k. determine(a) the rate of heat loss from the electronic device to the surrounding air and (b) the fin effectiveness.

ansver
Answers: 2

Another question on Engineering

question
Engineering, 04.07.2019 18:10
A-mn has a cubic structure with a0 0.8931 nm and a density of 7.47 g/cm3. b-mn has a different cubic structure, with a0 0.6326 nm and a density of 7.26 g/cm3. the atomic weight of manganese is 54.938 g/mol and the atomic radius is 0.112 nm. determine the percent volume change that would occur if a-mn transforms to b-mn.
Answers: 2
question
Engineering, 04.07.2019 18:10
Which of the following refers to refers to how well the control system responds to sudden changes in the system. a)-transient regulation b)- distributed regulation c)-constant regulation d)-steady-state regulation
Answers: 1
question
Engineering, 04.07.2019 19:10
Estimate the change in specific internal energy au and specific enthalpy h from inlet to outlet for ethylene glycol (a liquid) flowing through each of the following devices: (a) a heat exchanger where the glycol temperature increases from 20 °c to 80 °c; (b) a pump operating at about 25 °c and increasing the glycol pressure from 100 kpa to 8 mpa.
Answers: 2
question
Engineering, 04.07.2019 19:20
Acircular pipe of 30mm outside diameter is placed in an airstream at 30 c and latm pressure. the air moves in cross flow over the pipe at 20 m/s, while the outer surface of the pipe is maintained at 110 c. what is the drag force exerted on the pipe per unit length? what is the rate of heat transfer from the pipe per unit length?
Answers: 1
You know the right answer?
Atotal of 10 rectangular aluminum fins (k 5203 w/m·k) are placed on the outside flat surface of anel...
Questions
question
English, 06.03.2021 14:00
question
History, 06.03.2021 14:00
question
Mathematics, 06.03.2021 14:00
question
Mathematics, 06.03.2021 14:00
Questions on the website: 13722360