A room of fifteen square meters is very hot. How could it be cooler?

With the arrival of hot summer, many families have used air conditioners in recent years, which can protect their home life from the extreme heat. But most families still don't use air conditioning. In fact, some simple methods can also make your room cooler. First, open and close doors and windows reasonably. Many people think it's cool to open doors and windows in summer, but it's not. During the day, the outdoor temperature is high, the doors and windows are wide open, and the sunshine and thermal radiation are accompanied by bursts of hot air, which will make the indoor and outdoor generally hot. If you open the doors and windows for ventilation in the morning and evening when the weather is cool, close the doors and windows during the day, especially at noon, isolate the invasion of outdoor hot air, and draw a light curtain to block the sun and reflect the thermal radiation, you can make the room cooler. According to the actual observation, although the outdoor temperature in Chengdu exceeds 30 degrees in the afternoon, the indoor temperature can still be kept at about 28 degrees by the above methods. Second, balcony greening, courtyard greening. Planting flowers and trees on the balcony of courtyard greening not only has high ornamental value, but also has the function of regulating microclimate, which will make the air fresh, cool and pleasant. Because green plants can not only shade the sun, but also reduce the temperature by evaporating the water on the leaves. Some data show that planting grapes, morning glory, Parthenocissus tricuspidata and some flowers and plants on the courtyard balcony can reduce the temperature of the attached wall by 5℃ ~ 14℃ and the indoor temperature by 2℃ ~ 4℃. Third, use fans and water evaporation indoors to cool down. For example, after wiping the floor indoors with a wet mop, turn on the ceiling fan to evaporate and absorb the ground heat; You can also put a basin of cold water in front of the fan and turn on the fan to evaporate the water into cool air, which can all play a role in lowering the room temperature. Finally, in the hot summer, the room should be kept clean and tidy, and unnecessary things should be properly collected, so that there is more space in the room and people will feel comfortable. Don't be messy in the room, which will not only make people feel stuffy and suffocated, but also make people feel annoyed.