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The room is too hot, it is the window court disaster?

Homes don't have to be luxurious, but they must be energy efficient, healthy, comfortable and safe. With the advancement of the times, many people have begun to pay attention to the quality of life, and the comfort and comfort of the home environment has become a field of concern. When it comes to home, you have to mention the doors and windows. Today's doors and windows are no longer just tools for sheltering the wind and rain. From the overall environment, the technical content of doors and windows and energy conservation and environmental protection are also hot topics.

 

How important is the energy saving of doors and windows for the house? For people or experts in the industry, it accounts for about 40% of the total energy consumption. Doors and windows are the part of the building that is open for lighting. It is the weakest link in the house. The energy loss through the doors and windows is large, so in the house building, the performance of the doors and windows is very important!

 

Among them, the thermal insulation performance of doors and windows is one of the main indicators of door and window performance, and other properties such as wind pressure resistance, water tightness, air tightness and sound insulation. At present, the country has high requirements for building energy conservation. The Beijing area has required building energy to reach 75%, and the K value of doors and windows is less than or equal to 2.0w/(m2k). So what are the main factors affecting the insulation of windows? Below we will fully understand the form of the window switch, the material of the window frame, and the material of the glass.


Window opening method affects heat insulation


In daily life, our common windows mainly include sliding windows, casement windows, fixed windows, hanging windows, and rotating windows. The window opening methods are different, and the thermal insulation effects are different.


                                                               Sliding window 

There are two types of sliding windows: left and right, push-pull up and down. Many families use sliding windows to match the screens. The anti-mosquito effect is great, and it does not occupy indoor space. The appearance is beautiful and the price is affordable. It is very popular. However, it also has the disadvantage that the window is opened at most half, and the sealing and heat insulation effects are general.


Casement window 


The open area of the casement window is large, the ventilation is very good, the heat insulation and the sealing are very good. The disadvantage is that it requires a lot of outdoor space, and the house with a higher floor has a certain window if it encounters wind and rain. Danger.

       Fixed window 


The large-area fixed window is also very popular, and it has a good view of the outdoor. It is not only good for lighting, but also has good sealing and heat insulation, but it cannot be opened. It can only be used in a certain part

of the house because it cannot Open the window for ventilation.


suspended sash window

The hanging window refers to the window that opens along the horizontal axis. It is generally divided into upper hanging window, lower hanging window and middle hanging window. The range that can be opened is small, the ventilation effect is general, but it can achieve good sealing and heat insulation. Good performance, common for bathroom and kitchen spaces.

 

Summary: Each window has its own unique personality. If it is considered from the aspects of heat insulation and energy saving, the sealing and heat insulation of the sliding window is poor, the sealing of the fixed window is good, and the sealing and heat insulation performance of the casement window is good. For houses with high insulation requirements, window styles with casement windows can be used.



Window frame material affects heat insulation


The window frame is the backbone of the window, and its material's tightness and thermal conductivity also affect the indoor temperature. Therefore, when selecting the window frame, it is necessary to analyze the heat insulation performance of the window frame. In daily life, common window materials include wooden window frames, plastic steel window frames, and aluminum alloy window frames (divided into two types: ordinary aluminum alloys and broken aluminum alloys). These three types of thermal insulation properties are also prominent. Popular window material.


Wood window frame


A wooden window frame made of wood. Wood should be the most perfect form frame material, which has obvious advantages in terms of heat insulation and sound insulation, and the innate texture and natural pattern are more exciting, but the high quality wooden window, The cost may be higher.

Common aluminum window 

The aluminum alloy extruded profile is made of frame, enamel and fan material. The aluminum alloy is a good conductor of heat, and the external and indoor temperature will be easily transmitted along with the aluminum alloy window frame, and the thermal insulation performance is poor.


Broken bridge aluminum window


An insulating strip is inserted in the middle of the aluminum profile to break the aluminum profile to form a broken bridge, effectively preventing heat conduction.

Upvc window 

Plastic material, so the weight is small, the heat insulation performance is good, and the price is relatively low. Because it is often necessary to face the wind and rain to hit the sun, so the most concern is the anti-aging problem of plastic steel windows. In fact, high-quality plastic steel windows can be used for a hundred years.

 

Summary: Plastic steel windows and broken aluminum alloy windows have good sealing, heat preservation and heat insulation. Therefore, for this demand, you can choose the suitable window frame material according to yourpreference and economic ability.


  Glass affects heat insulation

Ordinary glass has very strong thermal conductivity and wants to block outdoor heat radiation and ultraviolet rays. Therefore, we must consider the choice of glass when decorating, and choose glass that can be well insulated. We will be very useful in summer. Commonly used insulating glass is heat absorbing glass, heat reflecting glass and insulating glass.

Heat absorbing glass

The sunshade coefficient of the heat absorbing glass is lower than that of the transparent glass, and the shading principle is to weaken the air into the room by absorbing solar energy. However, the heat-absorbing glass blocks some of the solar radiant heat in summer and winter, so it can be used in the southern region where heat is dominant, and not in the north. The heat absorbing glass is actually the absorption of radiation, and the heat absorbed by the glass will eventually be transmitted indoors and outdoors. The endothermic glass has no selectivity to the spectrum, which reduces the transmission of sunlight and hinders the projection of visible light, which will affect the daylighting.


Heat reflective glass

Heat-reflecting glass, also known as solar-controlled coated glass, is a kind of coated glass that has a reflective effect on sunlight. The heat-reflecting glass has strong reflection on visible light and long-wave radiation, and its function is to restrict solar radiation from entering the room.

 

However, the heat-reflecting glass has almost the same thermal insulation as the transparent glass, so it is not suitable for cold areas where the temperature difference is large indoors. However, in hot areas with strong light, the heat insulation effect is very good.


Insulating glass


The insulating glass is composed of two or more layers of flat glass, surrounded by a high-air-tight adhesive, and filled with a dry gas in the middle, thereby limiting the temperature difference heat transfer of the glass, and effectively reducing the heat transfer coefficient of the glass.

 

 

The maintenance cost of the insulating glass is high, and in the summer evening, the good thermal insulation performance of the insulating glass makes it difficult for the indoor heat to be emitted, which is disadvantageous for energy saving.


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