Thermoelectric Superconductors for Energy Harvesting and Cooling Applications

This article reviews two key areas in the field of thermoelectric superconductors used for gathering energy and cooling systems. The first area looks at a special kind of material called double perovskites. These materials are not only good for solar energy but also have unique features that make them useful for thermoelectric applications. For example, their structure and properties change depending on the type of halogen used, and they show promise for converting heat into electricity efficiently. The second area focuses on a new design of thermoelectric devices, made up of tiny energy generators called nanoTEGs. These are built on a silicon-basedmembrane and are designed to be highly efficient in managing heat. Initial tests have shown that these devices can generate a small amount of power, even with a modest temperature difference. This suggests that they could be used in future for tasks like measuring temperature or detecting airflow. Both of these areas offer exciting possibilities for improving how we harvest energy and manage heat, opening up new avenues for sustainable technology solutions

Comparative Study of Destructive Method and Non-destructive with Ultra-Sonic Pulse Velocity Method

The appropriate percentages of cement, fine aggregates, coarse aggregates, and water are utilized to make concrete. Due to its relatively low price and widespread availability, it is a ubiquitous building material. Concrete in its fresh state can also be molded into any desired shape and size. Strength and durability are two of concrete’s most important characteristics (particularly when used for structural purposes). Verify the concrete’s compressive strength before placing it under the expected loads. NDT methods, both destructive and non-destructive, can be used to assess the compressive strength of hardened concrete. A non- destructive test does not harm the concrete specimen, whereas a destructive test (DT) crushes the cast specimen until it breaks. In non-destructive testing, materials, components or assemblies are inspected, tested or evaluated without destroying their serviceability. This study compares the compressive strength of concrete utilising an ultrasonic pulse velocity approach, which is both destructive and non-destructive. Concrete cubes measuring 150 mm by 150 mm by 150 mm were created using the concrete mix grades 25N/mm2 and 30N/mm2, and they were allowed to cure for 28 days. There were 12 cubes produced and used for the study. The determine compressive strength between destructive and non -destructive (ultra-sonic pulse velocity) test method