Q1: Temperature of hot gases flowing in a pipe is measured by a thermocouple inserted in the thermal well. The thermal well made of __________ will facilitate the most accurate measurement of the temperature.

ANS:A - copper

Certainly! Copper is another suitable material for manufacturing thermal wells for temperature measurement applications in pipes using thermocouples. Here's an explanation of why copper is a good choice:

1. Thermal Conductivity: Copper is an excellent conductor of heat, which means it can efficiently transfer heat from the surrounding hot gases to the thermocouple inserted within the thermal well. This high thermal conductivity ensures that temperature measurements are accurate and responsive to changes in the gas temperature.
2. Corrosion Resistance: Copper has good resistance to corrosion, especially in environments with hot gases. This resistance helps maintain the integrity of the thermal well over time, ensuring reliable temperature measurements without the risk of degradation due to corrosion.
3. Machinability: Copper is relatively easy to machine and shape, allowing for the fabrication of complex thermal well designs. This versatility in manufacturing makes it practical for producing thermal wells of various shapes and sizes to accommodate different pipe configurations.
4. Compatibility with Thermocouples: Copper is compatible with most types of thermocouples used for temperature measurement. It ensures good thermal contact between the thermocouple and the hot gases, minimizing any thermal resistance that could affect the accuracy of temperature readings.

Overall, the combination of high thermal conductivity, corrosion resistance, machinability, and compatibility with thermocouples makes copper a suitable material for manufacturing thermal wells for temperature measurement in pipes. Therefore, a copper thermal well would be effective in facilitating accurate temperature measurements of hot gases flowing in a pipe using a thermocouple.