Question

What are the advantages of Thermal Expansion?

Answer 1

Hint Understand what thermal expansion is. Thermal expansion has numerous advantages when used in specific applications. Apply the concept in terms of real life applications and write the answer.

Complete step by step answer:
Some of the advantages of thermal expansion include;
1. Application of thermal expansion in Press fit operation is necessary. If the objects that are need to be pressed aren’t expanded thermally, it will increase the time and effort for creating press fits. Press fits are done more accurately, when both the objects are heated and joint when they’re at thermal equilibrium.

2. In Bimetallic Strips, thermal expansion is required so that when the strip gets expanded, the mercury in the bulb would trip the switch, turning on the air conditioning. Here, the thermal expansion of various metals are analyzed that suits the required need.

3. Thermal expansion is necessary in shaping of solids. During mold shaping, the metals are thermally expanded, which increases their flexibility and thus playing a major part in shaping of metals. One of the common uses include car doors manufacturing.

4. In air conditioners, thermal expansion valves enable air conditioners to operate at optimum capacity to handle numerous heat loads. Thus providing high power efficiency in all air conditioners.

5. Rivet joints are preheated or thermally expanded so that they hold the plates well and tight after cooling down. Rivet joints are heated for piercing into the sheet metal.

Thus the advantages of thermal expansion are explained with regards to its applications.

Note
Thermal expansion is a property which explains the tendency of the object or matter to change its shape, volume, density and area as a response to change in temperature, when the change is directly applied on to the object.