Pilot project at the Amsterdam University of applied science. (HvA - Hogeschool van Amsterdam)

In the project "Energy from an unexpected angle" it showed that there is a big potential for spin-off. E.g. this project too:  


" Cooling to the sky "  (koelen naar het heelal)


In this project, thermal radiation will be used for climate control of our buildings.

It is hot in our buildings. That's because every human body is a heat source of about 100W while wqe are using a lot of electrical equipment too.

In a rule of thumb, one can say that for any amount of heat, one need 1,5 times as much power to cool it. Every way to do it more efficient will make life more sustainable.

It is cold at the sky so the question raised is, is it possible to remove heat directly to the sky.

Normally, one thinks for gaining energy just at the sun which is logical. At our width it is about 3kW/m2 per day. But we can use radiation as well.

Radiation is the reason why canals are frozen in the winter.

Roughly one can sat that our atmospher is in balance, so there is 3kW/m2 per day of thermal energy radiated

The main question is how we can use this thermal energy.

In a nice pilot project meant for students, the Technology Centre of the UvA, students of the UvA and students of the HvA are investigating the possibilitiet of making cold i.e. removing heat.

The project has gained the "Sustainable University Award" for the idea.

The goal of the project is to investigate the possibility of cooling a builing by radiation.

We are pretty sure that it can raise the efficiency of an airco.If so, it is using less energy. We hope and thing in the order of 50%.

Maybe, it is even possible to cool without any additional energy. That's the reason for the (limited) pilot at the Amstelcampus.

How sustainable may it be?