“Why do you need to cool and heat the whole building? Why don’t you cool and heat individual people?” asked Yi Cui, professor of materials science and engineering at Stanford University.

Putting on or taking off articles of clothing works to keep a body cool or warm within a certain temperature range; outside that range we rely on heating systems and A/C to keep us comfortable. But what if one garment did both the heating and the cooling?

Cui’s colleague and postdoctoral fellow Po-Chun Hsu decided to create a fabric that could control radiation in both directions. He used two materials with different properties—copper and a carbon coating—and sandwiched them between two layers of polyethylene. When the copper faces out, it keeps heat in and warms the wearer. With the carbon layer facing out, heat is released and a body is cooled.

The material can expand a person’s range of comfort by over 10 degrees F. DOE recommends that we keep thermostats between 68 degrees F in the winter—cooler at night—and 78 degrees F in the summer. That’s a range of 10 degrees F of comfort. Add 10 degrees F to that and that’s quite a comfort range. But Hsu predicts that the potential comfort range increase is close to 25 degrees F. 

The material is not yet ready to wear. It will become a woven fabric that is reversible and can also be laundered. Look for it in your nearest GAP store in a few years?

For more on the Stanford research, click here.

Views: 57

Comment

You need to be a member of Home Energy Pros Forum to add comments!

Join Home Energy Pros Forum

Latest Activity

Lucyna de Barbaro liked David Eggleton's group 1000 Home Challenge
11 hours ago
Steven Lefler's photo was featured
12 hours ago
Brad Cook replied to Dav Camras's discussion Low Leakage home with cathedral ceiling
"It is all about the dewpoint. Think of the roof system as a big box. Air can circulate in, out and…"
14 hours ago
David Butler replied to Dav Camras's discussion Experience with new energy monitoring tools such as Curb, Sense, Nerio and Smapee
"@Dav, 240-volt circuits are dedicated to a single appliance so circuit monitoring with CT's…"
yesterday
Dav Camras replied to Dav Camras's discussion Experience with new energy monitoring tools such as Curb, Sense, Nerio and Smapee
"I have been thinking about putting it on my own home as you suggest, and was wondering which, if…"
yesterday
Profile IconGrady Harper, Christina Savage, gregory sutliff and 1 more joined Home Energy Pros Forum
yesterday
Doug Mullins added a discussion to the group Energy Auditing Equipment for Sale, Trade or to Purchase
Thumbnail

Blower Door equipment for sale

I have 5 ea Retrotec 6000 blower door fans - $3500.00 ea1 3000 series fan with WiFi -…See More
yesterday
Jon Finewood joined Norm Bourassa's group
Thumbnail

Multifamily Buildings

For too long there has been relatively little EE focus on multifamily, but some new programs have…See More
yesterday

Photos

  • Add Photos
  • View All

© 2017   Created by Home Performance Coalition (HPC)   Powered by

Badges  |  Report an Issue  |  Terms of Service