Rainy day car window glass is more hot air how to do, must open the air conditioning ah?

1, rainy days, the temperature inside the car is higher than the outdoor temperature, the fog (hot air) with the formation. This time the easier way is to open the cold wind, blow directly in front of the windshield, the effect is very good.　　2, open the window convection. If you find that the car is not foggy, you can open a gap in the windows on both sides, so that the formation of air convection inside and outside the car, the temperature difference will be reduced, the fog will slowly disappear. The principle of this method and open air conditioning cold air is the same, but does not increase fuel consumption. The disadvantages of window convection are very obvious, rain and snow, highway, fog is not available, and open the window will reduce the temperature inside the car.　　3, the use of defogging agent. Auto parts city, supermarkets and many other places are sold. Spray demisting agent to the inner surface of the car glass, and wipe clean, in the removal of glass dirt at the same time, but also the formation of a protective film to prevent the condensation of water vapor in the glass and the formation of fog layer, spray and wipe once can be fog-proof for about ten days. Prices from a dozen dollars to hundreds of dollars have, the current demisting agent market is a mixed bag, it is easy to buy products that do not work well. In fact, you can mix your own "anti-fog agent", the effect is not bad. The simplest way is to use detergent blending. Detergent and water according to the ratio of 1:10 mixing, and then use a clean soft cloth dipped in it coated in the front and rear windshield glass on the inside can be, can also be filled into a small spray bottle to use. This method is very simple to operate and save money.