How much indoor temperature is suitable for living in winter? Opinions vary. Some experts pointed out that when the temperature is lower than 12 degrees, 80% of people sitting feel cold, and more than 20% of people who are active feel cold. Hygiene regards 12 degree as the lower limit of building environment. If the indoor temperature is too high for a long time in winter, it will affect people's body temperature regulation function, causing body temperature to rise, blood vessels to relax, pulse to accelerate, heart rate to accelerate, and people will be tired, dizzy, slow-thinking and poor memory. At the same time, due to the large temperature difference between indoor and outdoor, it is difficult for human body to adapt and it is easy to catch a cold. If the indoor temperature is too low, the metabolic function of the human body will be reduced, the pulse and breathing will slow down, the subcutaneous blood vessels will contract, the skin will be excessively tense, and the resistance of the respiratory mucosa will be weakened, which will easily induce respiratory diseases. Therefore, the lower limit temperature of "cold resistance" and the upper limit temperature of "heat resistance" are 1 1 degree and 32 degrees respectively. So, what is the most suitable indoor temperature? It should be said that there are different standards. The actual situation is: different people, different environments, different external temperatures have different comfort standards. Young people 12- 14 degrees is ok, and old people 16- 18 degrees is ok. From the point of view of energy saving, the temperature shall not be lower than 10℃. The lower the outdoor temperature, the lower the indoor temperature. However, many people are just the opposite. The lower the temperature, the higher the temperature will be, resulting in a greater temperature difference. This is a mistake in understanding. Just like turning on the air conditioner in summer, you can't turn it down too low, which is easy to catch a cold, that is, spending money and hurting your health. From the point of view of fitness, low temperature is equal to saving money and getting healthy exercise.

The most pleasant indoor temperature and humidity is winter temperature 18℃~

25℃, humidity 30%~80%, how many degrees is the air conditioner on in winter? In an air-conditioned room, the human body feels most comfortable when the room temperature is 19℃~ 24℃ and the humidity is 40%~50%. For people who need to go out frequently, if the room temperature is too high, the temperature difference between indoor and outdoor will increase, which will reduce their resistance, make the indoor air unusually dry, destroy the warm and humid environment in the body, and affect the secretion of body fluids, which will not only make people feel hot and dry, but also make people feel difficult to breathe, and the eyes, ears, eyes, mouth, nose, throat and skin are unusually dry. If the indoor temperature is too low, the metabolic function of human body will be reduced, pulse breathing will slow down, subcutaneous blood vessels will contract, skin will be excessively tense, and respiratory resistance will be weakened, which will easily induce respiratory diseases. Remind friends to properly open the window and ventilate to ensure the comfort of living. It is best to put a basin of water indoors or use a humidifier to increase indoor humidity. First, it is best to open the window for ventilation three times a day. "Some people think that the more times you open the window, the better. In fact, this is not the case, because often opening the window will lower the room temperature, and the elderly and children are prone to illness. " Second, the room is small, and when it is windy or cold outside, the window opening time should be shorter; When the room is large, there is no wind outside or the weather is warm, the window opening time should be longer. Taking an 80-square-meter room as an example, opening the window for about 20 minutes in the absence of wind or breeze can reduce pathogenic microorganisms by 60%.

Third, if the outdoor is a road and there are many pollutants, it is necessary to change the window opening time. "A little earlier in the morning and a little later in the evening, I want to open the window for air when there are few cars. In case of sandstorm, if there are screens, it is better to open the windows a little smaller. And use a humidifier, humidifying spray, or put a pot of water on the heating to increase the humidity of the air and let the dust and microorganisms sink. "

Fourth, the elderly and children had better put on some clothes before opening the window, so as not to get sick because of the sudden drop in temperature after opening the window. If you have a seriously ill patient, you need to open the window carefully and try to purify the air with ultraviolet disinfection lamps.

It should be noted that the indoor temperature should not drop below 16℃ due to window opening, and it is better to control it at 16℃-25℃.