With a round of cold waves, whether you are in the north or south, you are experiencing a sudden drop in temperature. The huge temperature difference between indoor and outdoor caused by cooling brings a common problem to many families: glass condensation.
Why do the doors and windows at home have such a situation?
View the condensation phenomenon of doors and windows scientifically and rationally.
Condensation refers to the phenomenon of condensate on the surface when the surface temperature of an object is less than or equal to the nearby air dew point temperature. If the surface temperature of the glass is higher than its dew point temperature, condensation will not occur on the surface of the glass. Otherwise, if the surface temperature of the glass is less than or equal to the dew point temperature, the water vapor on the surface of the glass will inevitably saturate into dew drops to form condensation.
For example, when entering the indoor environment with glasses or changing from low temperature to high temperature in winter, condensation will appear on the lens. In fact, due to the decrease of temperature in autumn and winter, Dew formed by condensation of water vapor on the ground or near objects is a common condensation phenomenon in life. Condensation exists objectively.
Correctly identify the types of door and window condensation.
Is there dew inside the glass hollow layer or outside the glass?
1. If there are Dew, air intake, fog, cracks and obvious spots in the hollow glass layer, you can't wipe them off anyway, then this is indeed a quality problem. The glass seal is not well done or the desiccant is not good.
2. If the outside of the hollow glass, that is, the dew on the indoor surface, flows down to the windowsill, it is actually a normal natural phenomenon, especially when the temperature difference between indoor and outdoor is very large, this kind of condensation water is more obvious.
The better the heat preservation performance, the easier it is to accumulate dew.
The lower the heat transfer coefficient means that the temperature of the inner surface of the glass is less affected by the external temperature under certain conditions and time, which greatly slows down the loss of indoor temperature and energy, this also means that the better the insulation performance of insulating glass and the whole window is, and with the higher sealing performance, the insulation property is guaranteed again. Under the same conditions, the better the insulation performance is, the higher the indoor temperature is, and the saturated moisture content in the air will be improved. If the temperature difference between indoor and outdoor is large and the dew point temperature increases, there is a relative probability that condensation will occur.
On the other hand, if the heat transfer coefficient is high, that is, the insulating glass with poor heat preservation performance or the outer window with poor sealing performance of the whole window, the dry and cold air outside the winter is easy to enter the room, thus reducing the relative humidity of the outer window, at the same time, the air convection around the glass is accelerated so that the dew point temperature on the glass surface decreases, but condensation is not easy to occur.
Two improvement suggestions for soothing condensation
adjust indoor temperature and humidity.
Reduce the dew point temperature of the window glass by inner door. The winter weather in the North is cold, and we often neglect to open windows for ventilation, so closing doors and closing doors becomes the norm. Indoor bath, laundry, cooking, cooking, hydroponics green plant, etc., it is easy to make the indoor air water vapor content is too large, plus daily life and human body natural breathing, when the indoor glass surface temperature is lower than the dew point temperature, condensation will occur in cold places. Therefore, frequent ventilation and ventilation should be carried out and relatively reasonable humidity should be maintained, which is an effective means to prevent condensation.
Increase the temperature of the inner surface of the glass.
First of all, household heating facilities can be placed beside the shaded windows that are relatively prone to condensation. Secondly, the outdoor side shutter can be put down or the indoor curtain can be put down, which is convenient for indoor heat to spread to the glass surface. When northern families use heating, they should try their best to remove the barriers such as the package mouth so that the indoor heat flow can be effectively transmitted.
