Formula Developed for Heat Transfer Between Near-Field Bodies

Alejandro Rodriguez, a researcher at Princeton, and colleagues at the Massachusetts Institute of Technology have come up with a formula that describes the maximum heat transfer between near-field objects in a recent study. claimed that “with this new formula, engineers will know how much more performance can be squeezed out of their structural and material designs.”

Apparently a type of electromagnetic wave called evanescent waves transfer the heat between very close objects. explained, “These evanescent waves can be thought of as energy of light that gets trapped inside an object, never managing to break through its surface and propagate as typical radiation. The only time evanescent waves can “tunnel” from inside an object to its exterior is in the presence of a very near object with its own evanescent waves. The waves transfer the otherwise trapped energy.”

“To fully account for evanescent waves’ effects, Rodriguez and colleagues incorporated several key concepts: the flow of electrical current within objects, the conservation of energy, and “reciprocity,” the ability of either object to act as a heat receiver or absorber,” reported

“The new formula applies to objects with any arbitrary shape. By tweaking the material composition and shapes of objects, researchers can thus work out how to maximize near field heat transfer,” according to, “The Princeton scientists are using computers to rapidly create and vet potential surface designs, which can now be truly optimized courtesy of the new heat exchange equation.” adds, “Potential uses [for engineers] could include trapping heat and converting it directly into electricity (in devices called thermophotovoltaics), as well as cooling off electronics components such as processors.”

To read more, click here.

Original Source


Published by

Karis World

Hey, I'm a health nut who spends a lot of my time finding out about the latest and oldest ways to be healthy. I share on my blog all kinds of stuff about women's health, skin care, holistic healing, aging, and all sorts of other stuff.

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )


Connecting to %s