Breathable Fabric For Passive Cooling

 Breathable fabric can be used as a way to cool passive houses, also known as passive cooling. Passive cooling refers to the use of natural ventilation and thermal mass to cool a building, rather than relying on mechanical cooling systems.

A traditional Iranian solar cooling design using a wind tower

By Wind-Tower-and-Qanat-Cooling-1.jpg:
Williamborgderivative work: Monsih (talk) - Wind-Tower-and-Qanat-Cooling-1.jpg,
Public Domain, https://commons.wikimedia.org/w/index.php?curid=8981659

One type of breathable fabric that can be used for this purpose is a fabric known as "smart fabric." Smart fabrics are designed to respond to changes in temperature and humidity, and can be used in walls, roofs, and other building elements to regulate the temperature and airflow within a passive house. 

 Another type of breathable fabric that can be used for passive cooling is a type of insulation known as "breathable insulation." This type of insulation allows moisture to pass through it, preventing the buildup of mold and mildew. It also allows air to circulate, helping to regulate the temperature within the building. Both types of breathable fabric can help to reduce the need for mechanical cooling systems, such as air conditioning, and can help to create a more comfortable and energy-efficient living space.

Another type of breathable fabric that can be used for passive cooling is a type of shading system known as "shading sails." These sails are made from a lightweight and breathable fabric, such as polyester or PVC, that can be mounted on the exterior of a building to block the sun's rays while still allowing natural light to enter the building. This can help to reduce the amount of heat that enters the building, making it more comfortable and energy-efficient.
Additionally, there are also breathable roofing membranes, these are made of materials like polyethylene, polypropylene and polytetrafluoroethylene (PTFE) that allow moisture to escape while keeping the water out, these materials are applied as a layer on top of the roofing structure and provide the needed breathability.

In summary, breathable fabric can be an effective way to cool passive houses by allowing natural ventilation and thermal mass to regulate the temperature and airflow within the building. By using smart fabrics, breathable insulation and shading sails, as well as breathable roofing membranes, it is possible to reduce the need for mechanical cooling systems and create a more comfortable and energy-efficient living space.