For free convection from / to horizontal plate, characteristic length=L= area/ perimeter, Properties ( (B, v,...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
For free convection from / to horizontal plate, characteristic length=L= area/ perimeter, Properties ( (B, v, Pr ,k.etc) are calculated at TR %3! To+ Ts for gases B = - K-1 !! 2 TR hL Nu 0.54 Ra0.25. gB(T,-T.)L3 v2 Cpl Ra = Gr Pr, Gr Pr= k 2- An electronic component can be modeled as a plane wall, one side is subjected to combustion environment at 500°C; while the other side is cooled and maintained at 100°C. The wall material has thermal conductivity k = 4 W/m K. The gas side convection heat transfer coefficient is 250 W/m K. Thermal limitations imposed that temperature of the wall must not exceed 450°C. What is the maximum wall thickness? For free convection from / to horizontal plate, characteristic length=L= area/ perimeter, Properties ( (B, v, Pr ,k.etc) are calculated at TR %3! To+ Ts for gases B = - K-1 !! 2 TR hL Nu 0.54 Ra0.25. gB(T,-T.)L3 v2 Cpl Ra = Gr Pr, Gr Pr= k 2- An electronic component can be modeled as a plane wall, one side is subjected to combustion environment at 500°C; while the other side is cooled and maintained at 100°C. The wall material has thermal conductivity k = 4 W/m K. The gas side convection heat transfer coefficient is 250 W/m K. Thermal limitations imposed that temperature of the wall must not exceed 450°C. What is the maximum wall thickness?
Expert Answer:
Related Book For
Posted Date:
Students also viewed these mechanical engineering questions
-
A circular ceramic plate that can be modeled as a blackbody is being heated by an electrical heater. The plate is 30 cm in diameter and is situated in a surrounding ambient temperature of 15°C...
-
An aircraft aileron can be modeled as a first order system where p depends on the aircraft. Obtain a family of step responses for the aileron system in the feedback configuration shown in Figure...
-
A molecular bond can be modeled as a spring between two atoms that vibrate with simple harmonic motion. FIGURE P15.63 shows an SHM approximation for the potential energy of an HCl molecule. Because...
-
Knoko Systems is considering a capital budgeting project with a life of five years that requires an outlay of $90,000. It has free cash flows each period as shown in the following distribution:...
-
What type of noise is most difficult to remove from an analog signal? Why?
-
4 . Which one of the following areas is NOT a way companies often respond to exchange rate risk when they alter their product strategy? A . shifting the firm's manufacturing base to another country B...
-
Which of the following is a fraud in which later payments on account are used to pay off earlier payments that were stolen? a. lapping b. kiting c. Ponzi scheme d. salami technique
-
The second largest public utility in the nation is the sole provider of electricity in 32 counties of southern Florida. To meet the monthly demand for electricity in these counties, which is given by...
-
q)find about stock's risk based on the beta calculated before and compare it with the beta standard of 1.
-
Chumpy Lighting Limited manufactures a wide variety of light bulbs which it sells to lighting shops and builders merchants through wholesale distributors. It also sells direct to the big UK...
-
Frontier Park was started on Aprii 1 by C. J. Mendez. The following selected events and transactions occurred during April. Apr. 1 Mendez invested $40.000 cash in the business. Apr4 Purchased land...
-
The issue of quality of earnings has taken on increasing importance because of recent accounting scandals and financial crisis. Explain THREE (3) factors affecting the quality of earnings of a...
-
Consider a random experiment in which two dice are rolled, and the two values are multiplied together to give the outcome. Outcomes Second roll: First roll: 1 2 3 4 5 6 1 2 3 4 5 6 2 4 3 4 6802 12 10...
-
It is May 1. The quoted price of a bond with an Actual/Actual (in period) day count and 12% per annum coupon (paid semiannually) in the United States is 105. It has a face value of 100 and pays...
-
Define what is a leading economic indicator? - List one leading economic indicator, one coincident and one lagging. - Explain why leading indicators are not useful for investment policy? (for example...
-
Larissa has opened a CD (a Certificate of Deposit, a type of investment which pays simple interest) at Canandaigua Federal Bank by depositing $27,392.04. The term of the CD is 4 years, and it pays...
-
Carla Vista Manufacturing Corp. decided to expand further by purchasing the net assets of Wildhorse Manufacturing Corp. Wildhorse's statement of financial position at December 31, 2023 includes the...
-
Write a paper detailing a geographic information system (GIS) of your own design that would utilize data in an original manner.
-
Consider a pin fin as shown in Figure 2-10d. Assume that the fin is exposed to an evacuated space such that convection is negligible and that the radiation loss per unit surface area is given by...
-
A vertical square plate, 30 cm on a side, is maintained at 50C and exposed to room air at 20C. The surface emissivity is 0.8. Calculate the total heat lost by both sides of the plate.
-
Based on information contained in charts in this chapter, specify an approximate height for a vertical flat plate and diameter of a horizontal cylinder for which the simplified equations of Table 7-2...
-
A comparative balance sheet for Zephyr Corporation is provided in the Working Papers. The Income statement for the current year indicates that net income was \($10,160.00\) and the depreciation...
-
A comparative balance sheet for Cirrus Corporation is provided in the Working Papers. The income statement for the current year indicates that net income was \($20,900.00\) and the depreciation...
-
The following information was taken from the financial statements of Flexcor Corporation on December 31 of the current year. The comparative income statement of Flexcor Corporation reveals the...
Study smarter with the SolutionInn App