Is air in an good insulator?

Still air is just about the best insulator there is. At the molecular level, heat transfer is easier when atoms are packed closely together. So the actual point of most insulations is to get rid of as much solid material and trap still air inside little pockets.

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Combined-Cycle Power Plant

Combine Power Plant use both Gas Turbine and Steam Turbine to produce energy. Natural gas use for gas turbine.The exhaust heat of gas turbine use in steam turbine. A schematic diagram are given below: Combined Cycle Generation Process

What is automobile engineering?

Automotive engineering , along with aerospace engineering and marine engineering , is a branch of vehicle engineering , incorporating elements of mechanical , electrical , electronic , software and safety engineering as applied to the design, manufacture and operation of motorcycles , automobiles and trucks and their respective engineering subsystems. It also includes modification of vehicles. Manufacturing domain deals with the creation and assembling the whole parts of automobiles is also included in it.The automotive engineering field is research -intensive and involves direct application of mathematical models and formulas. The study of automotive engineering is to design, develop, fabricate, and testing vehicles or vehicle components from the concept stage to production stage. Production, development, and manufacturing are the three major functions in this field. (Source Wikipedia)

What is Composite Material?

A Composite Material is a material made from two or more constituent materials with significantly different physical or chemical properties that, when combined, produce a material with characteristics different from the individual components. Composite Material was introduced long time ago. But was in different form. Bricks were made by using clay and straw. It was ancient use of composite material. But now-a-days composite materials example: carbon, glass, epoxy etc.

Mechanical Engineering

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