Under the strong sunlight in summer, people not only produce glare and affect their work, so building shading becomes very important. So what are the forms of building shading? What are the methods of building window shading?
What are the forms of building sunshade?
The first category: facade sunshade
Facade shading includes horizontal blinds, vertical blinds, roller blinds, art curtains, etc., which are generally used for window shading, and can be manual or electric. Since the traditional Chinese architectural concept is to sit north and face south, vertical curtains are ideal sunshade products facing the sun rising in the east and setting in the west. It can rotate according to the movement of the sun, achieving a satisfactory sunshading effect , to obtain greater indoor and outdoor permeability.
Because the horizontal curtain is turned up and down, there will always be some hours in a day when the sun will sneak into the room, reminding you that it is time to take a rest.
The roller blind is relatively simple and crisp. When it is pulled down, it will cut off the connection between the indoors and outdoors and block everything;
Art curtains are elegant and noble. While shading the sun, you can slowly appreciate its beauty and arouse your infinite reverie.
The top shading system is mainly the canopy curtain. Canopy blinds, as the name suggests, are used to shade the glass of the roof. When rolled up, the blue sky and white clouds are exposed, and the sun shines through the window, making you unable to tell whether you are indoors or outdoors. When rolled up, it shields you from strong sunlight and saves you air conditioning costs.
The second category: wall sunshade
At present, the main form of the wall shading system is the breathing curtain wall venetian blind.
It is characterized in that: the back of the blade is covered with a layer of thermal insulation coating that can form a thermal break bridge. The venetian blind can separate the double-layer glass curtain wall channel into the front and rear two-layer cavities. Since the back of the blade is covered with a heat insulating layer, it can form a thermal break bridge in the double-layer glass curtain wall channel, and most of the heat is blocked in the outer cavity, so The temperature of the cavity on the indoor side is lower than that of the outer layer, which effectively reduces the temperature on the indoor side, thereby achieving better energy-saving effects.
The third category: outdoor sunshade
The outdoor sunshade system can be divided into sunshade and louver sunshade.
Awnings can be divided into curved arm awnings, swing arm awnings, and parasols. Shading integrates the building with the environment.
Venetian sun visors, commonly known as sun visors, are similar to indoor aluminum alloy venetian blinds, but larger in size and installed outdoors. The plates are generally made of aluminum alloy. As a rigid hard material, it can use air convection to reduce heat, shading effect and energy saving effect are excellent.
Characteristics of building sunshade
Building shading is usually divided into two types: building external shading and building indoor shading. Building external shading is mostly used in public buildings, landmark buildings, large shopping malls, high-end buildings, etc. It has good shading, heat insulation, and dimming effects. Excellent ventilation and anti-theft performance. It also has a certain beautification effect on the appearance of the building. Commonly used building external sunshade products mainly include fixed grid sunshade, shuttle-shaped louver sunshade, roller shutter sunshade, awning and so on.
Architectural indoor shading is relatively more widely used in China. Broadly speaking, curtains for household use can also be included, which is the most commonly used indoor window shading product. With the improvement of the economic level and the diversification of the types of window shading products, people's demand for window shading also tends to be personalized and advanced. At this time, electric curtains and smart window decoration sunshade products have gradually become popular. Commonly used indoor sunshade products include ordinary curtains, electric opening and closing curtains, roller blinds, venetian blinds, electric ceiling curtains, etc.
Building exterior shading is better for sunshade and heat insulation, while building interior shading is more advantageous for indoor dimming, ventilation, interior decoration, and privacy protection. The combination and complementary application of the two can achieve the greatest shading effect and play a very important role in creating a comfortable indoor environment for buildings.
What are the methods of building window shading?
fixed window
Fixed external shading has three basic forms: horizontal, vertical, and baffle shading.
A. Horizontal shading. Able to block sunlight from above the window. Suitable for south-facing exterior windows.
B. Vertical shading. Able to block sunlight from both sides of the window. Suitable for north-facing exterior windows.
C. Baffle shade. It can block the sunlight that hits the window flat. Suitable for windows facing east and west. In practice, it can be selected alone or in combination, and the common ones are comprehensive, fixed louvers, lattice sunshades, etc.
active window
Fixed shading will inevitably bring about conflicts with lighting, natural ventilation, winter heating, and vision. The movable sunshade can freely control the working conditions of the sunshade system according to the user's personal hobbies and other needs. Form: sunshade roller blinds, movable louvers sunshade and so on.
1. The use of sunshade roller blinds outside the window is an effective measure, which is suitable for windows of all orientations. When the roller blind is fully lowered, it can block almost all solar radiation. At this time, the heat entering the outer window is only the part of the solar radiation energy absorbed by the roller blind that is transmitted inward. If glass with low thermal conductivity is used, very little solar heat enters the window. In addition, the distance between the roller blind and the window glass can be properly maintained, and natural ventilation can be used to take away the heat on the roller blind, which can also effectively reduce the heat transfer from the roller blind to the room.
2. Movable louvers for sunshade. There are liftable venetian blinds and venetian shutters. The venetian blinds can be raised and lowered, and the angle can be adjusted to achieve a balance between shading, lighting and ventilation, so they are widely used in office buildings and residential buildings. According to different materials, it is divided into aluminum venetian blinds, wooden venetian blinds and plastic venetian blinds. The function of shutters is similar to that of external roller blinds, and its structure is simpler. It is generally in the form of push-pull or outward opening, and has been widely used abroad.
3. Awning. This kind of product is very common, there are everywhere, and the installation of each is too messy.
4. Sunshade screen. This type of product can not only block sunlight radiation, but also control the amount of visible light entering according to material selection, prevent ultraviolet rays, and avoid glare interference. It is a product suitable for hot areas. The material of the scrim is mainly glass fiber. It is fire-resistant and anti-corrosion, strong and durable.
In-window
The sun-shading facilities in the window are usually located in the middle of the double-glazed glass, and are combined with the window frame and glass to form a whole window, which has a strong integrity and is generally produced and formed in a factory.
inside the window
The choice of curtains is mainly based on the personal preferences of the residents to choose fabrics and colors, and seldom take into account the requirements of energy saving. Compared with other forms, curtain shading is more flexible, it is easier for users to adjust the appropriate opening method according to seasonal weather changes, and it is not easy to be damaged by the outside world. The sunshade products in the window include: venetian blinds, vertical curtains, roller blinds, etc. Material is then varied, and cloth, plastic (PVC), metal, bamboo, wood etc. are arranged. But the disadvantage is that when this type of form is used, the solar radiation passes through the glass, which makes the indoor curtain itself heated up. This part of heat has actually entered the room, and a large part will increase the temperature of the room through convection and radiation.