Q7/ To reduce frosting it is desired to keep the outside surface of a glazedwindow at 4°C. The outside is at -10°C and the convection coefficient is60 W/m K. In order to maintain the conditions a uniform heat flux isprovided at the inner surface which is in contact with room air at 22°Cwith a convection coefficient of 12 W/m2K. The glass is 7 mm thick andhas a thermal conductivity of 1.4 W/mK. Determine the heating requiredper m² area.

Answered: Image /qna-images/answer/27cf8737-22f3-45d8-be1c-523acbf66e0f.jpg

Answered: with a convection coefficient of 12 W/m…

with a convection coefficient of 12 W/m K. The glass is 7 mm thick and has a thermal conductivity of 1.4 W/mK. Determine the heating required per m area.

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

Related questions

Q: 50 W/m2 . K. If the dimensions of the brick are 0.06 m × 0.09 m × 0.20 m, determine the temperature…

Q: that heat loSs only occurs through the window, calculate w Ece to maintain the temperature, if the…

Q: .5m x 2.5 m double-pane window consists of two 4.5-mm-thick layers of glass (0.75= [d] W/m·K) that…

A: Given data A1glass = A2glass=Agap = 0.52.5 m2 Kglass = 0.75 W/mK Kgap = 0.025 W/mK Lglass =4.5mm…

Q: A furnace wall in the pharmaceutical industry is constructed from 220 mm of heat resistan clay…

Q: Plot how hx (heat transfer coefficient) depends on the distance along a plate (x) and explain how…

A: Plotting heat transfer coefficient and explaining how it depends on the distance along a plate (x).

Q: You may have noticed that bridge decks are often built with expansion joints that permit the deck to…

A: To full fill the quality parameters , we can not provide hand written solution…

Q: A hole is drilled on a soft steel. The power consumed by the drill is 0.25 kW. Since this drilling…

A: Given data: The power consumed by the drill is P = 0.25 kW. The time taken by the process is t = 3…

Q: image 109

Q: 00:08 A camera used for monitoring marine life is placed in water where T.. = 5°C and the convection…

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: One side (the hot side facing the room) of the radiator plate is maintained at a temperature of…

A: To determine the heat transfer efficiency of the A, B,C, D by natural convectionand to determine the…

Q: Pravinbhai

A: The objective of this question is to determine the temperature at the mid-plane of the Inconel…

Q: You want to figure out whether it is safe to touch the outside surface of the pipe in question. Here…

Q: 7.5 m 7.5 m 7.5 m Which of the two configurations above should a company use if it plans on using a…

A: In this problem, we have to calculate the heat transfer through the wall of the both the…

Q: A square thermal window is constructed of two sheets of flat glass, each 4.00 mm thick, separated by…

A: Given:kglass=0.80 W/m.Kkair=0.024 W/m.KTcold=20oCThot=30oCCross-sectional area, A=6.00 m2Find:a The…

Q: A window with an Rsrvalue of 0.18 receives 300 W/m² of insolation. If the interior of the building…

A: As given that For window RSI- = 0.18 , insolation = 300 W/m2 ; The temperature of the interior Ti=…

Q: All thermos containers have a thin region of vacuum between the outer casing and the inner…

Q: For a 3-cm thick slab that can be taken to be infinite in the x- and y-directions, the steady…

A: (a) To find: The heat flux through the slab. Given: The thickness of the slab is z=3 cm1 m100…

Q: ce is facin an air having temperature of 30°C, then what will be th value of coefficient of…

Q: The Diamond Ring Solution. The processing chip on the computer that controls the navigation…

A: Given: Thickness of copper plate t= 2mm Diameter of copper plate d=1.2 cm Maximum chip temperature…

Q: Consider a 1 cm thick copper wall (k=375 W/m K) whose one surface is exposed to condensing water…

Q: 4. A large block of Aluminum is initially at uniform temperature of 40 °C the surface is exposed to…

Q: Liquid oxygen which is boiling at 61 K is stored in a spherical container, 1 m in diameter covered…

Q: The 12ft x 14 foot room illustration in figure 1.6a has an exterior wall at a surface temperature of…

A: Exterior wall surface temperature (Tex) = 60°FWindow surface temperature (Twin) = 40°FInterior wall…

Q: If a 20 cm long and 0.4 mm diameter platinum wire is placed horizontally in a water container with a…

Q: 1. Judging from its unit W/m.K can we define thermal conductivity of a material as the rate of…

A: 1. We can not define thermal conductivity as the rate of heat transfer through the material per unit…

Q: Determine the temperature variation inside the iron plate with a thickness 21 of 2 mm,…

A: A steady state is a state which remains the same over given time period. In heat transfer problems…

Q: You want to figure out whether it is safe to touch the outside surface of the pipe in question. Here…

Q: The 5-mm-thick bottom of a 200-mm-diameter pan may be made from aluminum (k = 240 W/m-K) or copper…

Q: What must be the Height of a 200mm diameter vertical pipe carrying hot liquid so that the…

A: Given:Diameter of the vertical pipe, d=200 mm or 0.2 mSurrounding area, Ts=38o CRate of convection…

Q: The surface temperature of the hot side of the furnace wall is 1200°C. It is desired to maintain the…

A: Given data as per the question Furnace wall temperature =12000 c Outside wall temperature =380 c The…

Q: A 30 mm diameter copper sphere and a 30 mm copper cube are both heated in a furnace to 923 K. They…

Q: Is the heat transfer in the metal rod transient considering that its temperature varies along its…

A: The heat transfer can be given as - Q = kA∆TL The variation of temperature along the length, is a…

Q: Question # 3: Water is boiling in a 12-cm-deep pan with an outer diameter of 25 cm that is placed on…

Q: Explain why an absolute temperature is defined and give its SI units.

A: Given Data : Absolute temperature SI Unit

Q: Two parts and label (A) & (B) Solve carefully! Question : The roof of a car in a parking lot absorbs…

Q: The Diamond Ring Solution. The processing chip on the computer that controls the navigation…

A: Given dataGap between chip and cooling plate t=2 mmThickness of copper plate Diameter of copper…

Q: 9.5 m 9.5 m 9.5 m The two configurations above both have a wall thickness of 550 mm, and a length of…

A: Given, The side of square cross-section or diameter of circular cross-section, d = x = 9.5 m The…

Q: Two water columns are at different temperatures, one being at 35°C and the other being at 18oC. The…

Q: A 40-gram water with temperature of 60°C is placed into a 60-gram aluminum cup of temperature 25°C.…

Question

Q7/ To reduce frosting it is desired to keep the outside surface of a glazed
window at 4°C. The outside is at -10°C and the convection coefficient is
60 W/m K. In order to maintain the conditions a uniform heat flux is
provided at the inner surface which is in contact with room air at 22°C
with a convection coefficient of 12 W/m2K. The glass is 7 mm thick and
has a thermal conductivity of 1.4 W/mK. Determine the heating required
per m² area.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

Please fats. The answer in the box is incorrect
Find the amount of heat transfer transmitted through a west window (5 m2) 6 mm clear single glass window without interior shading in Amman in July at 15 pm. Assume ho=22.7 W/m2.K and the construction is heavy.
Give step by step answer and. Clear
0.0299 W/m·K 1.30. Approximate the density of gaseous carbon monoxide at 550 K and 827 kPa. 1.31 Leing ik
What is the heat stored the fluid in a geothermal reservoir 15 km² and 350 m thick with a uniform porosity of 35% if the fluid is single phase liquid water at 270°C?
Example A small solid at temperature of 80oC is to be cooled in a cooling chamber maintained at 5oC.Determine the ?me required for the temperature of the solid to reach 8oC if the propor?onality constant in Equa?on (7.31) α = 0.002/m2-s with a contac?ng surface area A = 0.2 m2
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?
What is the thermal resistance of a 3 in fired clay brick with density of 120 Ibm/ft3 a. 0.422 b. 6.8 c. 0.48 d. 6.2
= A processing plant is convectively heating a solid half-sphere of radius of 12 cm made of pure aluminum (k 237 W/m-K) by placing it on an insulated surface as shown in Fig. 1. It is exposed to hot exhaust gas at 300°C with a convection coefficient of 180 W/m².K. Is the lumped capacitance approximation valid? Figure 1: Half-sphere
If a heat transfer coefficient of 2.84 W l(m2 • K) exists on each of the two inside faces of two sheets of 6.35-mm-thick glass separated by an air gap, calculate the gap that can be used such that the rate of heat transfer by conduction through the air gap equals the rate of heat transfer by convection. What is the rate of heat transfer if this gap is exceeded. The thermal conductivity of air of 0.0242 WI (m . K). Solve for temperature of 20°C and 12°C on the outside surfaces of the glass. Would the calculated gap change in value for different values of the surface temperatures? Would there be any advantage to increasing the gap beyond this calculated value?
Can you help me answer my sample problem for my review?