Le forum de la musique ancienne
Des claviers du clavecin au clavier de l'ordinateur, un lieu d'échange pour ceux qui aiment la musique ancienne et classique, ainsi que pour ceux qui la pratiquent, dans un esprit de discussion ouverte, d'entraide et de solidarité
 
 FAQFAQ   RechercherRechercher   MembresMembres   GroupesGroupes 
 S’enregistrerS’enregistrer    ConnexionConnexion 

Scottie Pippen Olympics Jersey
Poster un nouveau sujet   Répondre au sujet
   Le forum de la musique ancienne Index du Forum  .::. Faites-vous connaître!  .::. Annoncez vos CONCERTS

Sujet précédent .::. Sujet suivant  
Auteur Message
ding2018


Hors ligne

Inscrit le: 10 Avr 2018
Messages: 190

Message Posté le : Jeu 26 Juil - 04:12 (2018)    Sujet du message : Scottie Pippen Olympics Jersey Répondre en citant

SAN FRANCISCO John Havlicek Celtics Jersey , Sept. 4 (Xinhua) -- Researchers at Stanford University have shown that without electricity, a system involving high-tech mirror-like optical surfaces can cool flowing water to a temperature below that of the surrounding air.

Since 2013, Shanhui Fan, professor of electrical engineering, and his students and research associates have employed the roof of the Packard Electrical Engineering Building at Stanford as a testbed for the optical surface that could be the future of lower-energy air conditioning and refrigeration.

Their work published in 2014 first showed the cooling capabilities of the optical surface on its own.

Their new research, published Monday in British Journal Nature Energy Jayson Tatum Celtics Jersey , built on their previous work with what they call "radiative sky cooling" but takes it to the next level.

"It provides for the first time a high-fidelity technology demonstration of how you can use radiative sky cooling to passively cool a fluid and, in doing so, connect it with cooling systems to save electricity," said Aaswath Raman, one of Fan's former research associates and co-lead author of the latest paper.

Radiative sky cooling is a natural process resulting from the moments of molecules releasing heat, such as the heat that comes off a road as it cools after sunset. This phenomenon is particularly noticeable on a cloudless night because Jaylen Brown Celtics Jersey , without clouds, the heat can more easily make it through Earth's atmosphere, all the way to the vast, cold reaches of space.

"If you have something that is very cold -- like space -- and you can dissipate heat into it, then you can do cooling without any electricity or work. The heat just flows," explained Fan Jae Crowder Celtics Jersey , who is senior author of the paper. "For this reason, the amount of heat flow off the Earth that goes to the universe is enormous."

Human bodies release heat through radiative cooling to both the sky and our surroundings, but radiative sky cooling isn't going to live up to its name on a hot, sunny day, as the sunlight warms us more than radiative sky cooling will cool us.

To overcome this problem, the team's surface uses a multilayer optical film that reflects about 97 percent of the sunlight while simultaneously being able to emit the surface's thermal energy through the atmosphere.

Without heat from sunlight Isaiah Thomas Celtics Jersey , the radiative sky cooling effect can enable cooling below the air temperature on a sunny day.

"With this technology, we're no longer limited by what the air temperature is," noted Eli Goldstein, Fan's another former research associate and co-lead author of the paper, "we're limited by something much colder: the sky and space."

In the experiments published in 2014, small wafers about 8 inches Gordon Hayward Celtics Jersey , or 20 centimeters, in diameter were used to show how the multilayer optical surface itself cooled.

For the new paper, the researchers created a system where panels covered in the specialized optical surfaces sat atop pipes of running water. The panels were slightly more than 2 feet, or about 61 centimeters, in length on each side.

With the water moving at a relatively fast rate, the team found the panels were able to consistently reduce the temperature of the water 3 to 5 degrees Celsius below ambient air temperature over a period of three days.

Fan Dennis Johnson Celtics Jersey , Raman and Goldstein have founded SkyCool Systems, a company working on further testing and commercializing the technology, possibly by making their panels integrate easily with standard air conditioning and refrigeration systems.

Leaders of BRICS countries pose for group photo before summit

Xi calls for solidarity among emerging economies, developing nations

Xi, Putin agree to enhance strategic coordination, appropriately deal with DPRK nuclear test

Xi stresses China-Mexico strategic synergy

Autumn scenery of Hunhe River in N China's Hohhot

Villagers air harvests in south China

Dew drops seen on plant leaves in east China

Fish Dish Festival celebrated in C China's Hunan
How To Be A Professional With Your Affiliate Marketing Software March 2 Danny Ainge Celtics Jersey , 2014 | Author: Daniel Will | Posted in Marketing
Many individuals have gotten amazing success with affiliate marketing plans. By understanding profitable marketing methods, internet affiliate marketing can become some thing you you will benefit from as well. The next article will assist you to make affiliate marketing online successful.

When you have numerous affiliate programs you happen to be element of, only preserve ones that have been profitable for your needs. Make certain that they may be still an asset to your business, and letting you grow. The affiliate marketers which do not make a great deal of revenue can be removed, so that you can target the ones that pull in more revenue.

Bear in mind why someone is checking out your blog – should they be there for a particular concept such as athletics or growing plants, that is what they may be anticipating to discover. Except if the link is sporting activities related Bob Cousy Celtics Jersey , putting a hyperlink on an affiliate marketing internet site are unable to allow you to. Your viewers will usually click on a link that tightly refers to this content on your web site.

When individuals arrived at your sporting activities-styled site, they will be ready to hear reasons for sports. An associate web site that is completely not related to sporting activities is unlikely to bring in website visitors. Guests are likely to buy at online marketers in case the web sites are based on the information on the web site.

Aim to get your followers to completely believe in you. If your viewers feel like they are fully aware and respect you, they’ll make an attempt to cause you to money by making use of your affiliate marketer hyperlinks.

Affiliate internet marketing aids a lot of people make extra income, but it’s vital. Cheap Jerseys From China   Cheap Jerseys China Wholesale   Cheap NFL Jerseys   Cheap Jerseys China Free Shipping   Cheap Custom Jerseys   Cheap Jerseys Online   Cheap NFL Jerseys From China   Cheap Replica NFL Jerseys   Wholesale Jerseys   Wholesale Jerseys From China 


Revenir en haut
              

Publicité






Message Posté le : Jeu 26 Juil - 04:12 (2018)    Sujet du message : Publicité

PublicitéSupprimer les publicités ?
Revenir en haut
              

   Le forum de la musique ancienne Index du Forum .::. Annoncez vos CONCERTS
Poster un nouveau sujet   Répondre au sujet
Page 1 sur 1
Toutes les heures sont au format GMT + 1 Heure
Montrer les messages depuis :   

 
Sauter vers :  

Index | Panneau d’administration | Creer un forum | Forum gratuit d’entraide | Annuaire des forums gratuits | Signaler une violation | Conditions générales d'utilisation
Powered by phpBB © 2001, 2005 phpBB Group
Traduction par : phpBB-fr.com
Template by .: SGo :.