Sport ground surface

Sport ground surface with heat exchanger. With this, it's possible to head to swimming pool in summer time. In winter, it's possible to use a tennis court for ice skating.



 Sport ground surface Sport ground surface with heat exchanger. With this, it's possible to head to swimming pool in summer time. In winter, it's possible to use a tennis court for ice skating.

What to do with a tennis court in winter? Make a ice skating place out of it, with the taken out heat, warm an indoor swimming pool.