Homework Help is Here – Start Your Trial Now!
Engineering
Mechanical Engineering
A science experiment is being conducted in a spherical container made of thick glass (ID = 40mm, wall thickness = 20mm. The spherical container contains a liquid metallic salt W and the air outside the m²K (Tsalt = 1800°C). If the convection coefficient of the salt is h = 900 %3| container is at RT, what must the outside air convection coefficient be to limit the temperature difference between the inner and outer surfaces of the glass container to 1400°C?

A science experiment is being conducted in a spherical container made of thick glass (ID = 40mm, wall thickness = 20mm. The spherical container contains a liquid metallic salt W and the air outside the m²K (Tsalt = 1800°C). If the convection coefficient of the salt is h = 900 %3| container is at RT, what must the outside air convection coefficient be to limit the temperature difference between the inner and outer surfaces of the glass container to 1400°C?

Elements Of Electromagnetics
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
icon
Related questions
Question

Material properties sheet is attached 

A science experiment is being conducted in a spherical container made of thick glass (ID = 40mm, wall thickness = 20mm. The spherical container contains a liquid metallic salt (Tsalt = 1800°C). If the convection coefficient of the salt is h = 900 W and the air outside the m²K container is at RT, what must the outside air convection coefficient be to limit the temperature difference between the inner and outer surfaces of the glass container to 1400°C?
Transcribed Image Text:A science experiment is being conducted in a spherical container made of thick glass (ID = 40mm, wall thickness = 20mm. The spherical container contains a liquid metallic salt (Tsalt = 1800°C). If the convection coefficient of the salt is h = 900 W and the air outside the m²K container is at RT, what must the outside air convection coefficient be to limit the temperature difference between the inner and outer surfaces of the glass container to 1400°C?
Material Density (kg m³ Specific Latent Heat Latent Heat Thermal Heat (Kak) of Fusion, of Conductivity W Vaporization kg AmK. \kg. Air 1.225 718 0.025 Aluminum 2712 900 396000 200 Ammonia 682 4400 1371000 (Liquid) Cast Iron 7300 460 247000 40 8940 390 206000 400 Сopper Ероху 1200 1000 1.5 G10 1800 670 0.3 Fiberglass Glass 2200 750 1 Silicone 1070 1300 0.2 Steel 7850 450 247000 20
Transcribed Image Text:Material Density (kg m³ Specific Latent Heat Latent Heat Thermal Heat (Kak) of Fusion, of Conductivity W Vaporization kg AmK. \kg. Air 1.225 718 0.025 Aluminum 2712 900 396000 200 Ammonia 682 4400 1371000 (Liquid) Cast Iron 7300 460 247000 40 8940 390 206000 400 Сopper Ероху 1200 1000 1.5 G10 1800 670 0.3 Fiberglass Glass 2200 750 1 Silicone 1070 1300 0.2 Steel 7850 450 247000 20
Expert Solution
Step 1

Given data,

Thermal conductivity of the glass(from the table), Kglass = 1 W/mK

Inner diameter of the glass sphere = 40 mm

so, inner radius of the glass sphere, ri = 20 mm= 0.02 m

Outer radius of the glass sphere, ro = ri + (Thickness of the glass)

ro = 20 + 20 = 40 mm = 0.04 m

Temperature of the metallic salt, Tsalt = 1800 °C

Convective heat transfer of the salt, hsalt = 900 W/m2K

Outside temperature of the air is room temperature i.e., T∞ = 27 °C

Temperature difference between inside and outside surface of the container, ∆T = 1400 °C

To determine, the convective heat transfer coefficient of the outside air

trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 4 steps with 2 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Types of Properties of Engineering Materials
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
Recommended textbooks for you
Elements Of Electromagnetics
Elements Of Electromagnetics
Mechanical Engineering
ISBN:
9780190698614
Author:
Sadiku, Matthew N. O.
Publisher:
Oxford University Press
Mechanics of Materials (10th Edition)
Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:
9780134319650
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Thermodynamics: An Engineering Approach
Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:
9781259822674
Author:
Yunus A. Cengel Dr., Michael A. Boles
Publisher:
McGraw-Hill Education
Control Systems Engineering
Control Systems Engineering
Mechanical Engineering
ISBN:
9781118170519
Author:
Norman S. Nise
Publisher:
WILEY
Mechanics of Materials (MindTap Course List)
Mechanics of Materials (MindTap Course List)
Mechanical Engineering
ISBN:
9781337093347
Author:
Barry J. Goodno, James M. Gere
Publisher:
Cengage Learning
Engineering Mechanics: Statics
Engineering Mechanics: Statics
Mechanical Engineering
ISBN:
9781118807330
Author:
James L. Meriam, L. G. Kraige, J. N. Bolton
Publisher:
WILEY
SEE MORE TEXTBOOKS