+1-415-670-9189
info@expertsmind.com
Determine the efficiency of a single fin
Course:- Mechanical Engineering
Reference No.:- EM13703881




Assignment Help
Expertsmind Rated 4.9 / 5 based on 47215 reviews.
Review Site
Assignment Help >> Mechanical Engineering

A radiator wall measuring 2 m by 3 m (WxH) is held a temperature of 125 °C. Straight aluminium fins (k = 175 W/mK) are to be mounted on the wall. The fins are 5 cm in length and 0.8 mm thick. The system is allowed to convectively transfer heat to ambient air at 20 °C with a heat transfer coefficient of 20 W/m2K.

a. Determine the efficiency of a single fin (f).

b. Determine the heat transfer from a single fin. Fin running along the width.

c. Determine the fin effectiveness (f). Fin running along the width.

d. Determine the heat transfer if the radiator wall does not have any fins.

e. Determine the overall surface efficiency if you had 10 fins running along the length (H).

f. You are requested to design a fin system that will reject 3 times (3X) more than the bare radiator wall. Determine the number of fins needed. Run the fins along the length (H) of the wall.

i. How would the solution change if the fins were running across the width?

ii. How would the solution remain the same if the fins were running across the width?

 

g. If copper was used for the design in “part f” would the number of fins decrease/remain the same/increase? Explain your answer.




Put your comment
 
Minimize


Ask Question & Get Answers from Experts
Browse some more (Mechanical Engineering) Materials
A vertical cylindrical tank 2m diameter has, at the bottom, a 0.05m diameter sharp edged orifice for which the discharge coefficient is 0.6. If water enters the tank at a con
A building in Denver Colorado is constructed with a slab-on-grade floor. The construction type is an uninsulated 100-mm block wall with a brick face. The perimeter of the buil
Determine the work done by the ammonia by summing the area below the P-V process curve. As you plot it, P is the height and the change in volume is the base of a number of r
Find Positive Limit Load and Positive Ultimate Limit Load of Given Aerobatic Aircraft-Max Gross Weight = 10,000 lb.4.Find Maneuvering speed (Va) of given aerobatic aircraft W=
Two planes A and B are flying at the same altitude. if the magnitudes of their velocities are va = 500 km/h and vb=450km/h such that the angle between their straight line cour
Consider the heat exchanger of Problem 11.14. After several years of operation, it is observed that the outlet temperature of the cold water reaches only 95°C rather than th
The 3-hp induction machine given in Table 6.10-1 is operating at no load. The sequence of the applied voltages is suddenly reversed. Assume the electrical system establishes
Air at 40 °C, 1 bar, and 10% RH goes through an evaporative cooler, and the outlet air is cooled to 27 °C. Find (a) the relative humidity at the outlet, and (b) the amount of