ZuoTi.Pro
Question

Heat Transfer problem, ch9Problem 14: Also, after going over example problem 9-2, determine the heat transfer by natural convection for the hot plate fCooling of a Plate in Different Orientations Consider a 0.6-m x 0.6-m thin square plate in a room at 30°C. One side of the plradiation can be significant and needs to be considered in surfaces cooled by natural umber in this case are 4 = P 4L 4 $${T,

Will give instant thumbs up!

engineering   Mechanical-Engineering   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

NU - 27.04 = h=5.0619 wlock का hl home) K 0.02808 ů = hag (TS-TO) = 5.0619 (0.680.6) (90-36) - 109.337 W.

0 0
Add a comment
Know the answer?
Add Answer to:
Heat Transfer problem, ch9 Will give instant thumbs up! Problem 14: Also, after going over example...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • Problem 2) Consider convection heat transfer over a flat plate, as shown in the figure. The...

    Problem 2) Consider convection heat transfer over a flat plate, as shown in the figure. The flow is parallel to the length (dimension L) of the plate. The plate is maintained at a constant surface temperature, and the Reynolds number Rei- 750,000. The Pr-0.85 for this fluid. What is the correct Nusselt number to calculate the average heat flux along the length of the plate? (A) Nu (0.037Ret5-871) Pr (B) Nu1 -0.664 Re2 Pr (C) Nu 0.332 Re! Pr (D)...

  • Question 11 10 pts For the natural convection case shown below there is a thin square...

    Question 11 10 pts For the natural convection case shown below there is a thin square plate with dimensions of 0.6-m x 0.6-m is in a room at 30°C. One side of the plate (is exposed to the room) has a constant temperature of 10°C, while the other side is insulated. The fluid property is given as: Pr = 0.72 k=0.028 W/m°C v=1.9x10-5 m?/s (b) cold surface facing down (a) cold surface facing up What is the Rayleigh numberfor the...

  • (a) (iWhen is heat transfer through a fluid by conduction or by convection? For what case...

    (a) (iWhen is heat transfer through a fluid by conduction or by convection? For what case is the rate of heat transfer higher? How does the convection heat transfer coefficient differ from the thermal conductivity of a fluid? (ii) Explain the physical significance of Nusselt number (ii) By definition, discuss hydraulic diameter. Obtain an expression for hydraulic diameter of a circular tube of diameter, D (b) The local atmospheric pressure in Gboko, Benue State Nigeria (elevation 1610 m), is 834...

  • The heat that is conducted through a body must frequently be removed by other heat transfer...

    The heat that is conducted through a body must frequently be removed by other heat transfer processes. For example, the heat generated in an electronic device must be dissipated to the surroundings through convection by means of fins. Consider the one-dimensional aluminum fin (thickness t 3.0 mm, width 20 cm, length L) shown in Figure 1, that is exposed to a surrounding fluid at a temperature T. The conductivity of the aluminum fin (k) and coefficient of heat convection of...

  • Use the integral method for boundary layer flow and convective heat transfer over a flat plate he...

    Use the integral method for boundary layer flow and convective heat transfer over a flat plate heated by maintaining a constant heat flux q"w, for the case of very low Prandtl number, Pr0. Assume that the free stream velocity of the fluid, U, and free stream temperature, T-do not vary with x. Using the integral form of energy equation, show that under these conditions: (a) the temperature profile, (T- T) is given by, 41 2 CT-T oa (b) the wall...

  • Heat Transfer Please be neat and organized for a thumbs up! Problem 3 Atmospheric air at...

    Heat Transfer Please be neat and organized for a thumbs up! Problem 3 Atmospheric air at T 300 K and a free stream velocity of u 10 m/s flows over a flat plate L = 2 m long that is maintained at a uniform temperature T-320 K. (a) Calculate the average heat transfer coefficient over the region where the boundary layer is laminar. What is the boundary layer thickness at this location? plate as well as the velocity boundary layer...

  • Exercise 2 Air at 20 °C and 1 atm flows over a flat plate at 50...

    Exercise 2 Air at 20 °C and 1 atm flows over a flat plate at 50 m/s. The plate is 300 cm long and is maintained at 60C. The width of the plate is 2 m. The critical Rec = 5 x 105 The properties are Conductivity k = 0.0263 W/mK, kinematic viscosity nu = v = 15.89 x 10-6 m²/s, Prandtl number is Pr=0.707 Density rho = p = 1.128 kg/m3 1. Determine the critical length Xc 2. Determine...

  • Homework 7 heat transfer 2018-20 1) A horizontal tube of 12.5-mm dimeter with an outer srface temperature of 240°C is placed in a room with an air temperature of 20°C. Estimate the heat transfer rate...

    Homework 7 heat transfer 2018-20 1) A horizontal tube of 12.5-mm dimeter with an outer srface temperature of 240°C is placed in a room with an air temperature of 20°C. Estimate the heat transfer rate per unit length of the tube due to free convection. 2) Air at -10°C flows at 10 m/s over the roof plate of two 5m length rooms whose air is at Too-200C. The roof plate is 0.20-m thick concrete (k = 0.6 w/ m. K)....

  • I need Q5 Heat transfer Problem(.) In an experiment, it is found that the local convection...

    I need Q5 Heat transfer Problem(.) In an experiment, it is found that the local convection coefficient on a flat plate of length L is given by: (10 marks) h,-o923 (k/x){(V. ?.?)/p)as, where k, V, p, and ? are constants. Determine the average convection coefficient over the plate h Problem (5) (10 marks) Milk is flowing with a mass flow rate m 0.6 kg/s, in a pipe with internal diameter - 3 cm. Its initial temperature is 50 °C and...

  • A)The Nusselt numbers for vertical orientation is? B)The ratio of the heat transfer rate for the...

    A)The Nusselt numbers for vertical orientation is? B)The ratio of the heat transfer rate for the horizontal orientation (with hotter surface at the bottom) to that for vertical orientation is 9-85 Consider a 3-m-high rectangular enclosure consisting of two surfaces separated by an air gap (Lj-0.16-m at 1 atm. The surface temperatures across the air gap are 30°C and-10°C. The properties of air at T,-(Ts* Too)/2-10°C are k-002439 W/m K, V-1.426 x10-5 m2/s, Pr 0.7336, and B 1V/T 3.534 x...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT