Membrane structure sunshade It has high reflectivity, low light absorption and low thermal conductivity, which greatly prevents solar energy from entering the room. In addition, the translucency of the membrane material ensures the proper natural diffuse light to illuminate the room. Because of its light weight, the membrane building does not need the large span space covered by the internal support surface, which enables people to design and use the building space flexibly and creatively.
The membrane material is basically a kind of fabric, which is composed of fibers. The material selection, proper design, construction, manufacturing and installation of a fabric structure can ensure the quality of the structure. The quality of the structure mainly depends on the selection of materials. It is more suitable for tension structure and inflatable structure, because the membrane itself has load.
Most fabric structures use fabric more than mesh or film. Fabrics are mainly plated with other materials or laminates to produce greater tension or greater resistance to external forces. The most common materials are polyester laminated or PVC coated materials, and glass fiber materials coated with PTFE or silicon. Mesh, film and other materials have their own scope of application.
The daylighting coefficient (i.e. the ratio of natural light intensity inside and outside the room) of the indoor space of the film structure shed can generally be as high as 10%; However, in the traditional construction, the light can only enter the room from the limited lighting window, and its lighting coefficient is less than 3%. Even on cloudy days, the light level in the membrane structure room can meet the basic requirements of most activities.
Because the transmitted light and reflected light entering the membrane structure shed are diffuse light, glare is unlikely to emerge. However, it is necessary to consider the arrangement of the glass daylighting area and sunshade to avoid glare caused by its direct light. Indoor people in the film structure shed will have a good color perception of white or off white film materials, because these two colors show the characteristics of linear spectral transmission of visible light. The transmission degree increases with the increase of the wavelength of the transmitted light, which makes the transmitted light slightly warmer than the incident light. Transmission spectrum, fiber and its characteristics, coating thickness, etc.
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