Engineering, 16.10.2020 07:01 alfarodougoy8lvt
In order to increase heat transfer between a stainless steel (k = 15 W/m-K) wall and the surrounding air, eight parabolic fins made of aluminum (k = 186 W/m-K) are attached to the surface of the wall. The surrounding air is a temperature of 20°C and the convection coefficient between the wall and the air is found to be h = 200 W/m^2 -K. The wall has a height of 50 mm and a width of 200 mm, while each fin has a base thickness of 4 mm and a length of 10 mm. The surface temperature of the wall is 300°C.
Required:
a. Calculate the efficiency of a single fin, ηf
b. Calculate the overall surface efficiency, ηe for the finned surface.
Answers: 2
Another question on Engineering
Engineering, 04.07.2019 18:10
The mass flow rate of the fluid remains constant in all steady flow process. a)- true b)- false
Answers: 1
Engineering, 04.07.2019 18:10
If a particle moves along a path such that r : (3 sin t) m and ? : 2t rad, where t is in seconds. what is the particle's acceleration in m/s in 4 seconds? a)- 16.43 b)- 16.29 c)- 15.21 d)- 13.79
Answers: 1
Engineering, 04.07.2019 18:10
Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false
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
You know the right answer?
In order to increase heat transfer between a stainless steel (k = 15 W/m-K) wall and the surrounding...
Questions
Advanced Placement (AP), 12.03.2021 02:30
Mathematics, 12.03.2021 02:30
Mathematics, 12.03.2021 02:30
English, 12.03.2021 02:30
Mathematics, 12.03.2021 02:30
Mathematics, 12.03.2021 02:30
Mathematics, 12.03.2021 02:30
English, 12.03.2021 02:30
Mathematics, 12.03.2021 02:30
Mathematics, 12.03.2021 02:30
