Consider a large plate as given in the figure below. The thermal conductivity and thickness of the plate are “5*(ID)" W/m.K and “50*(ID)" mm. What is the surface temperature (Ts) of the plate in K for given properties? (NOTE: “ID" is the last 2 digits of your student number. For the student number of "00" must be used as "10".) T- 308 K re- 0.95 T - 297 K- T-297 K h-2 W/m?-K (Air) A=1.8 m2 11

Consider a large plate as given in the figure below. The thermal conductivity and thickness of the plate are “5(ID)" W/m.K and “50(ID)" mm. What is the surface temperature (Ts) of the plate in K for given properties? (NOTE: “ID" is the last 2 digits of your student number. For the student number of "00" must be used as "10".) T- 308 K re- 0.95 T - 297 K- T-297 K h-2 W/m?-K (Air) A=1.8 m2 11

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

What’s the correct answer for this please ?
This question requires the use of the conduction charts given in the appendix at the end of this paper. A wooden sphere of diameter 5 cm is initially at a uniform temperature of 21 °C. Its surface temperature is suddenly raised to 83 °C. The thermal conductivity and thermal diffusivity of the wood are 0.15 W/m K and 0.82 x 10-7 m2/s, respectively. a) Calculate the temperature 2 cm beneath the surface of the sphere 30 min after the sudden increase in temperature. b) Calculate the energy gained by the sphere during this time.
1) A wall section composed from the outside to inside, of concrete brick 100mm thick, an air space of 50mm, two layers of fiberglass insulation 38mm thick, concrete block 150mm thick and air space of 19mm and a gypsum board of 13mm. The exterior conditions are -20C and RH=90% while the interior conditions are 23C and RH=40%. The surface temperature from the outside to inside are shown in the figure. The permeances are: Still Air: µ = 175 ng/pa.s.m Fiber glass: M=2560 ng/pa.s.m? Concrete block: M= 200 ng/pa.s.m? Gypsum board: M= 2000 ng/pa.s.m? Concrete brick: µ = 4.55 ng/pa.s.m Determine if there is a risk of condensation, and if there is, what is the condensation rate? What would happen if a vapor barrier (M=0.2 ng/pa.s.m²) was installed on the warm side of the insulation (Surface 4). 21с 19C 16 С 12C -10 -15C -18C -19C Gyp Air Concrete Fiber Fiber Air Concrete Outdoor Indoor sum block Glass Glass brick 230 19 50 mm -20C 13 150 mm 38 mm | 38 mm 100 mm RH=90% RH=40% mm mm Surf. 1 Surf.…
I need the answer quickly
An uninsulated steam pipe passes through a room in which the air and walls are at 25°C. The outside diameter of the pipe is 88 mm, and its surface temperature and emissivity are 200°C and 0.80 respectively. If the coefficient associated with free convection heat transfer from the surface to the air is 15W/m2-k, what is the rate of heat loss for a 5 meter pipe? Round your answer to 2 decimal places.
To reduce heat flux, the skin is wrapped with a clothing material. What should be the thickness of the clothing material covering the surface of this skin tissue to reduce the heat flux to half of its original value? What is the temperature at the skin-clothing material interface? Note: if you think you need to have more information to solve this problem, you're free to make assumptions. Please state them clearly in your answer, if you need to make such assumptions.
A brass plug is to be placed in a ring made of iron. At 20°C, the diameter of the plug is 8.755 cm and that of the inside of the ring is 8.741 cm. They must both be brought to what common temperature in order to fit? Given : Required : Illustration: Solution: final answer:
PROBLEM (4) What does it mean for an object to have a negative heat capacity?
Using Ritz technique, determine the temperature distribution in the fin. T=20 °c, h=0.3 w/cm² °c, k=4 w/cm °c. Assume free end is open to the atmosphere
7. A composite wall consists of three materials, as shown in Figure 2. The inside wall temperature is 200°C and the outside air temperature is 50°C with a convection coefficient of 10 W/m²-K. Determine the temperature along the composite wall. Where A is the area of cross- section (can be taken to be equal to 1) and k is the conductivity. Problem is governed by the equation d²T -kA- = 0, 0
A wall as given in fig is made up of two layers (A) and (B) The temperatures are as shown in the sketch. The ratio of thermal conductivities of two layers is given as KA = 3 the ratio t, : t, is KB T2 = 1200 T, = 1300° C B T3 = 30 A
A hot water pipe is used for domestic applications is insulated with a layer of calcium silicate. If the insulation is 25 mm thick and its inner and outer surfaces are maintained at Ts,1 = 800 K and Ts,2 = 400 K, respectively. The outside diameter is 0.12 m. Calculate the heat loss per unit length of the pipe. Given the thermal conductivity of calcium silicate insulation equals to 0.09 W/m.K.