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In this blog amazing energy technologies will be described

Radiative Sky Cooling

Veröffentlicht von Claus Diekötter auf 21. September 2017, 21:39pm

Kategorien: #cooling, #energy efficiency, #Buildings, #Solar

In this post the technology of the radiative sky cooling will be described. In this month (09/2017) an article was published in which the Stanford university claimed that they invented a cooling system, in which the costs for cooling could be reduced drastically. The heat in this case will be transferred into space.

The main technology consists of a plastic layer which has two effects: First it blocks up to 97% of the radiation from the sun, preventing the building from heating up. On the same time it is able to transmit heat. Therefore the surface of the material stays cool all the time. 

Here is a picture which illustrates the technology: 

This layer is able to keep a house at 20°C although the temperature of the outside air is 37°C - and this without the need of electricity. 

A simulation of this technology for a commercial building located in Las Vegas showed that the reduction in costs was quite high. 14,3 MWh of electricity could be saved according to the simulation - which is around 21 %. 

In another system this technology was able to reduce the temperature of flowing water up to 5°C below the surrounding temperature.  

This technology can help to reduce the energy needed to cool buildings and industrial buildings. Cooling facilities consumes up to 15 % of the global electricity produced, which can be saved with the application of this technology.  




- https://www.youtube.com/watch?v=SEpTzyACDts
- http://news.stanford.edu/2017/09/04/sending-excess-heat-sky/

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