Experiment :LEE'S DISC Aim: To determine the thermal conductivity of a bad conductor by the Lee's method.What is the Analysis for this table and graph? Time (min)0 246810 12 1416 | 18 20 | 22 24 26 | 28 30Temperature59 58 57 56 56 56 55 54 53 52 51 50 49 48 47 46(°C)Temperature vs Time graph70605040302010101520253035Time (min)Temperature (°C) calculations:de46-56-10Slope=dt-0.530-1020de= -0.5 °C/min= -8.333 x 10-3 °C/sec= -8.333 x 10-3 k/secFrom the graph,slope = Rate of coolingdtThe Thermal Conductivity constant may be calculated asde`dtA(T1-T2)m xc x xd 0.803kg × 380 j/kg.k × 8.333x10-3k/sec × 1.70×10-³m0.0251 W /m . K9.5552x10-3m² x( 346k-328k)Where c= Specific heat capacity of brass = 380 j/kg.k

Concept used: Heat flows from higher to lower temperature.

Answered: Experiment :LEE'S DISC Aim: To…

Experiment :LEE'S DISC Aim: To determine the thermal conductivity of a bad conductor by the Lee's method. What is the Analysis for this table and graph?

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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