G.?"Which matcrial has the higher themal conductivity'?d: 5.(ht What is the overall heat-transfer coefficicnt U? Describe a physical situation,inす 5コ .:-which it could be used.石:.5 .(c) A standard Schedule 405 cm steel pipe (inside diameter 5.25 cm and wall thickness040 cm) čarrying steam is lagged (i.e insulated) with 5.0 cm of 85 per cent magnesia covered inturn with 5.0 cm of cork. Estimate the heat loss per hour per meter of pipc if the inner surface ofthe pipe is at 120°C and the outer surface of the cork is at 32°C. The thermal conductivitics ofthe substances concerned are9.ofMaterialThermal Conductivity[Watts/ha K]Steel4585% Magnesia(0.07Cork0.05Atいい1

Q. a) Given: which material has higher thermal conductivity.

うー。 Which matcrial has the higher themal conductivity? (b) What is the overall heat-transfer coefficicnt U? Describe a physical situationin vhich it could be used. そ. 。 (c) A standard Schedule 405 cm steel pipe (inside diameter 5.25 cm and wall thickness D.40 cm) čarrying steam is lagged (i.e insulated) with 5.0 cm of 85 per cent magnesia covered in urn with 5.0 cm of cork. Estimate the heat loss per hour per meter of pipc if the inner surface of the pipe is at 120°C and the outer surface of the cork is at 32°C. The thermal conductivitics of the substances concerned are Thermal Conductivity Material [Watts/ha K] Steel 45 85% Magnesia 0.07 Cork 0.05 At it

うー。 Which matcrial has the higher themal conductivity? (b) What is the overall heat-transfer coefficicnt U? Describe a physical situationin vhich it could be used. そ. 。 (c) A standard Schedule 405 cm steel pipe (inside diameter 5.25 cm and wall thickness D.40 cm) čarrying steam is lagged (i.e insulated) with 5.0 cm of 85 per cent magnesia covered in urn with 5.0 cm of cork. Estimate the heat loss per hour per meter of pipc if the inner surface of the pipe is at 120°C and the outer surface of the cork is at 32°C. The thermal conductivitics of the substances concerned are Thermal Conductivity Material [Watts/ha K] Steel 45 85% Magnesia 0.07 Cork 0.05 At it

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

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