A wall with a brick and concrete layer is shown in the figure. The wall has a length of15 m and 6 m high. The brick (k = 1.3 W/m-K) has a thickness of 75 mm and theconcrete (k = 2 W/m-K) is 150 mm thick. Determine the total heat resistance, theheat transfer rate through the wall, and the temperature of its inner surface for a dayduring which the room is maintained at 20°C while the temperature of the outdoorsis 32°C. Take the convection heat transfer coefficients on the inner and outersurfaces of the wall to be 12 W/m²-K and 18 W/m²-K, respectively, which includesthe effects of radiation.Round off your final answer to three (3) decimal places. (20 pts.)ToooutOutdoorBrickConcrete WallHeat Transfer, Q (W) =Total Heat Resistance, RT (K/W) =input: 2.01234x10^-3)T₂Inner Surface Temp, T2 (°C) =ToinIndoor(5 decimal places - example

Given:length of wall, l=15 mheight of wall, h=6 mkb=1.3 W/m.Ktb=75mmkc=2…

A wall with a brick and concrete layer is shown in the figure. The wall has a leng 15 m and 6 m high. The brick (k = 1.3 W/m-K) has a thickness of 75 mm and th concrete (k = 2 W/m-K) is 150 mm thick. Determine the total heat resistance, t heat transfer rate through the wall, and the temperature of its inner surface for during which the room is maintained at 20°C while the temperature of the out is 32°C. Take the convection heat transfer coefficients on the inner and outer surfaces of the wall to be 12 W/m²-K and 18 W/m²-K, respectively, which incl the effects of radiation. Pound off your final answer to three (2) decimal places (20 pts

A wall with a brick and concrete layer is shown in the figure. The wall has a leng 15 m and 6 m high. The brick (k = 1.3 W/m-K) has a thickness of 75 mm and th concrete (k = 2 W/m-K) is 150 mm thick. Determine the total heat resistance, t heat transfer rate through the wall, and the temperature of its inner surface for during which the room is maintained at 20°C while the temperature of the out is 32°C. Take the convection heat transfer coefficients on the inner and outer surfaces of the wall to be 12 W/m²-K and 18 W/m²-K, respectively, which incl the effects of radiation. Pound off your final answer to three (2) decimal places (20 pts

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

Pr
The wall of a furnace consists of a 0.85 cm-thick layer of steel (ks = 15.1 W/m/K) and an outer layer of brick (kb = .72 W/m/K). The outer surface temperature of the brick, To = 50oC, and is exposed to convection with air at 20oC providing a heat transfer coefficient of 150 W/m^2/K. Determine the steady temperature at the steel brick interface, Tmid, and on the exposed steel surface, Ti, if the brick layer has thickness Lb = 5 cm.
heat transfer question
Q3/ A 6(m) long 2(kW) electrical resistance wire is made of 0.2(cm) diameter stainless steel (k = 15.1 W/m °C). The resistance wire operates in an environment at 30°C with a heat transfer coefficient of 140 (W/m?. °C) at the outer surface. Find the temperature distribution equation and determine the surface temperature of the wire.
Water flows through a cast steel pipe with k = 53 W/m-K with an outer diameter of 110 mm and 3.5 mm wall thickness. Calculate the thickness of insulation to be lagged on the pipe if the heat transfer per unit length is 6.5 W/m. The thermal conductivity of the insulation is 0.045 W/m-K. The water temperature is 15°C with convective heat transfer coefficient of 30 W/m2 -K while the outside air is -8°C and 18 W/m2 -K.
heat transfer course Consider a large plate as given in the figure below. The thermal conductivity and thickness of the plate are 0,55 W/m.K and 3,915 mm. What is the surface temperature (Ts) of the plate in K for given properties?
i need the answer quickly
A pipe carrying hot gasses is insulated with a material having a thermal conductivity of 0.15 W/mK. The average local heat transfer coefficient by convection to the ambient air is 3 W/m K. The critical diameter of the pipe under 35. these conditions is (a) 100 mm (c) 160 mm (b) 130 mm (d) 200 mm
Consider a large plane wali of thickness L03 m thermal conductivity k25 /m K, end surfece aree A 12 m The left side of the well ot x=O is subjected to a net heat flux of go760 W/m while the temperature at that surfece is measured to be T 80°C Assuming constant thermal conductivity and no heat generation in the wall, ovaluate the temperature of the right surface of the wall at xEL The temperature of the right surfaoe of the wall at x Lis
Plate glass 5 mm thick at 200°C is to be cooled from both sides using air at 40°C. If surface cracks are to be avoided, determine the maximum value of convective heat transfer coefficient. Material properties are density = 2500 kg/m3, specific heat 670 J/kgK. Thermal conductivity 0.744 W/mk. Also determine the time required in this to cool the plate to 80°C.
Its thickness is 1.18 m, its thermal conductivity is 2.75 W/m.°C and its surface area is 15m2Consider a wide plane wall. Inside of the base plateThere is a uniform heat flux produced on its surface with the help of the resistance wire inside.590 W/m2 on the left surface of the wall at x=0net heat fluxand the temperature on this surface was measured as 590 °C. On the wallassuming that there is no heat generation and that the thermal conductivity is constant;a) The differential equation for continuous one-dimensional heat conduction in the wall, andSet the boundary conditions.b) Solve the differential equation to obtain a relation for the temperature change at the wall.c) Calculate the heat loss rate from the wall.
The thermal conductivity of a solid material can be determined using asetup similar to the one shown in the accompanying figure. The thermocouples are placed at 2.5 cm intervals in the known material (copper alloy, k - 52 w/m.k) and the unknown sample, as shown. The known material is heated on the top by a heating element, and the bottom surface of the sample is cooled by running water through the heat sink shown. Determine the thermal conductivity of the unknown sample for the set of data given in the accompanying table. Assume no heat loss to the surroundings and perfect thermal contact at the common interface of the sample and the copper.