The patent application of the invention named "Breathing Wall Apparatus Providing Natural Ventilation", developed by Ömer Saatcıoğlu, an academician of the Department of Architecture at Istanbul Kültür University, within the framework of energy efficient building design studies, has been filed.

There are buildings that are designed according to the "Passive House" standards and do not have heating and cooling systems. However, these buildings must have a heat recovery mechanical ventilation system. Making the heating, cooling and ventilation systems completely passive in ecological buildings, creating a zero-energy design in the context of these three seems like a distant goal at the moment. With this, studies are carried out to make the ventilation system passive. For example, in the second generation "breathing wall" system, hundreds of holes with a diameter not exceeding 1 mm are created that pierce the wall from outside to inside, allowing low speed and small amount of air passage. This understanding is diametrically opposed to today's multi-layered, airtight and heavily insulated 20th century building envelope.

Saatcıoğlu's invention is a kind of passive ventilation apparatus that allows a controlled and desired amount of natural air flow to the inside by adjusting the appropriate density and depth by using the hollow structure of the straw that allows air passage. The aim is to make heating, cooling and ventilation completely passive in theory and to be one step closer to the goal of zero energy building. The next goal is to transform the invention into a research project and to develop the invention with the data to be obtained from the test results.