There are four standard specimens Brass Aluminum and Stainle

There are four standard specimens; Brass, Aluminum, and Stainless Steel. Sort these specimens starting with the one has the highest energy transferred by conduction. Based on the experimental data below answer the following questions; Investigate the relationship between the pressure and temperature of saturated steam in equilibrium with water at atmospheric temperature of 18.5 degree C and atmospheric pressure of 936 mbar. Compare and discuss the graph plotted from experiment data to that of the theoretical calculated data. Why is it necessary to ensure no air trapped within the device at the beginning of the experiment?

Solution

Problem 1: There are 3 metals and alloys that are provided in the problem.

(a) Brass

(b) Stainless steel

(c) Allumium

First of all I will provide the reason or how the heat is conducted through the metal or alloy. We know that heat is transfered from one end of the metal or alloy by the free electrons present in the specimen. The enegy of the electron at the hot end is more than the cold end and that heat is transfeered by the electrons from one end to the other. So each metal or alloy have different number of free electrons and hence different heat conduction.

Also the rate of heat transfer or the amount of heat transfer depends upon the time electron takes to move from hot end to the cold end which in turn depends upon the obstruction the elctron faced during its motion. The lesser the obstruction more will be the heat transfer.

So it is obvious from this explanation that the pure metal have high thermal conduction than the alloys because in alloys we have different alloying elements that tend to increase the time travel beacuse the electrons hit the irregularities.

So allumium has the highest thermal conduction

Now Brass has more thermal conductivity than the stainless stell because of the less number of alloying elements in the brass.

Alluminium> Brass> Stainless steel.