A hot surface at 250C is to be cooled by attaching straight aluminum rectangular fins (k...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
A hot surface at 250°C is to be cooled by attaching straight aluminum rectangular fins (k = 240 W/m K) with 25 mm length, 50 mm width and 4 mm base thickness. Fins are exposed to an ambient air condition of 30°C and heat transfer coefficient is 40 W/m2 K. If there are 2000 fins per m² surface area, calculate; a. The heat transfer rate from a single fin. b. The increase in the rate of heat transfer per m? surface area as a result of attaching 2000 fins. c. Determine the overall effectiveness of the fins. A hot surface at 250°C is to be cooled by attaching straight aluminum rectangular fins (k = 240 W/m K) with 25 mm length, 50 mm width and 4 mm base thickness. Fins are exposed to an ambient air condition of 30°C and heat transfer coefficient is 40 W/m2 K. If there are 2000 fins per m² surface area, calculate; a. The heat transfer rate from a single fin. b. The increase in the rate of heat transfer per m? surface area as a result of attaching 2000 fins. c. Determine the overall effectiveness of the fins.
Expert Answer:
Related Book For
Fundamentals of Thermal-Fluid Sciences
ISBN: 978-0078027680
5th edition
Authors: Yunus A. Cengel, Robert H. Turner, John M. Cimbala
Posted Date:
Students also viewed these mechanical engineering questions
-
A 40-W power transistor is to be cooled by attaching it to one of the commercially available heat sinks shown in Table 176. Select a heat sink that will allow the case temperature of the transistor...
-
A hot surface at 100°C is to be cooled by attaching 3-cm-long, 0.25-cm-diameter aluminum pin fins (k = 237 W/m·K) to it, with a center-to-center distance of 0.6 cm. The temperature of the...
-
An electronic device is to be cooled by air flowing over aluminum fins attached to its lower surface as shown U?? = 10m/sT?? Air = 20?CThe device dissipates 5 W and the thermal contact resistance...
-
B. Giulia runs at 4.5 m/s (1 m/s is 2.2 mi/h ... just think "about 2 mi/h"). She is running eastward into the sunrise and along a straight-line path. Show a complete sketch from when you start...
-
What are the advantages and disadvantages of using project management?
-
The wire AE is stretched between the corners A and E of a bent plate. Knowing that the tension in the wire is 435 N, determine the moment about O of the force exerted by the wire (a) On corner A, (b)...
-
What are the functions of bone marrow?
-
On June 1, Year 3, Forever Young Corp. (FYC) ordered merchandise from a supplier in Turkey for Turkish lira (TL) 217,000. The goods were delivered on September 30, with terms requiring cash on...
-
A closed-end fund has total assets of $240 million and liabilities of $110,000. Currently, 11 million shares are outstanding. What is the NAV of the fund? If the shares currently sell for $19.25,...
-
The Davis Lamp Company (DLC) is a wholesale company that purchases lamps from the manufacturer and resells them to retail stores. The company has three inventory items: desk lamps, table lamps, and...
-
calculate the IRR for the following information A Net Cash Flows After Tax Cash Flows Cost B Year 0 Revenue C D E Year 1 Year 2 Year 3 F Year 4 G H Year 5 $ (30,000.00) $ 429,000.00 $ 400,000.00 $...
-
After being forced to take a pay-cut from $55,000 per year to $47,000 per year, Harolds door-dash orders went from 104 per year to 77 per year, while his trips to the movies went from 52 to 44, and...
-
A firm sells 960 units every day at a price of $ 1.55. The firm has some explicit costs that add up to $ 799 per day. The owner of the firm could earn $ 178 per day if he worked elsewhere. What is...
-
Correct the false statements. Why are they false? 1.) People with a high need for orientation tend to be resistant to the media's political priorities. 2.) Cultivation theory predicts that the...
-
What are the molecular mechanisms underlying enzyme inhibition, and how do competitive, non-competitive, and uncompetitive inhibitors alter enzyme kinetics and substrate turnover rates?
-
Given Q= 100 - 2P + 0.02Y, where Q is the quantity demanded, P is the price and Y is the income and given P=20 and Y=5,000.Find the a) Price elasticity of demand b) Income elasticity of demand
-
The Kay Company has the following Capital structure as at 31st March 2019. Based on Book Value Based on Market Value % Costs Debentures 300,000 330,000 ...
-
Activator rod AB exerts on crank BCD a force P directed along line AB. Knowing that P must have a 100-N component perpendicular to arm BC of the crank, determine (a) The magnitude of the force P, (b)...
-
Cooling water available at 10C is used to condense steam at 30C in the condenser of a power plant at a rate of 0.15 kg/s by circulating the cooling water through a bank of 5-m-long...
-
Consider two identical people each generating 60 W of metabolic heat steadily while doing sedentary work and dissipating it by convection and perspiration. The first person is wearing clothes made of...
-
Liquid mercury is flowing at 0.6 kg/s through a 5-cm-diameter tube with inlet and outlet mean temperatures of 100C and 200C, respectively. The tube surface temperature is maintained constant at 250C....
-
In the FRED database, find a variable that is available in both a seasonally adjusted form and a not seasonally adjusted form. Plot both over time and describe how large the seasonal variation in the...
-
Graph the levels of real GDP for the United States, Canada, and Germany (data can be found at www.oecd.org under Statistics and then under National Accounts). Are U.S. and Canadian business cycles...
-
How does each of the following variables behave over the business cycle? Develop graphs to show your results and give economic explanations. a. Real imports b. Federal government receipts c. Housing...
Study smarter with the SolutionInn App