In an experiment to determine the thermal conductivity of a new metal alloy, a bar of the metal is completely surrounded by insulation and exposed to 707 W of constant heat energy at one end. The bar has a radius of 0.074 m and a length of 0.331 m. The entire set-up is place in a cold room and once the system has reached steady state conditions, the temperature at the hot end is measured to be 63.8°C and the temperature at the cold end is measured to be 14.9°C. What is the thermal conductivity (in W/m∙K) of the metal alloy [round your final answer to zero decimal places]? Another metal alloy was tested using the same set-up (same size and heat input) as question above. If the temperature difference between the hot end and the cold end for this test was found to be 30°C, it would indicate that this material is a better conductor of heat than the material tested in question above.
Energy transfer
The flow of energy from one region to another region is referred to as energy transfer. Since energy is quantitative; it must be transferred to a body or a material to work or to heat the system.
Molar Specific Heat
Heat capacity is the amount of heat energy absorbed or released by a chemical substance per the change in temperature of that substance. The change in heat is also called enthalpy. The SI unit of heat capacity is Joules per Kelvin, which is (J K-1)
Thermal Properties of Matter
Thermal energy is described as one of the form of heat energy which flows from one body of higher temperature to the other with the lower temperature when these two bodies are placed in contact to each other. Heat is described as the form of energy which is transferred between the two systems or in between the systems and their surrounding by the virtue of difference in temperature. Calorimetry is that branch of science which helps in measuring the changes which are taking place in the heat energy of a given body.
In an experiment to determine the thermal
Another metal alloy was tested using the same set-up (same size and heat input) as question above. If the temperature difference between the hot end and the cold end for this test was found to be 30°C, it would indicate that this material is a better conductor of heat than the material tested in question above.
Step by step
Solved in 2 steps with 1 images
