Which is colder, dry or wet? What's the difference between dry and wet?

Lead: The degree of cold in winter in the north and south is different. The northern region is dry and cold, while the southern region is wet and cold. So, today I will tell you, which is colder, dry or wet? What's the difference between dry cooling and wet cooling? Let's have a look.

Which is colder, dry or wet?

Wet and cold is colder, and the human body feels cold because it will dissipate heat, and it will be cold when it is scattered. It's dry in the north, so it won't be cold if you wear more. The south is humid, even if you wear a thick coat, there may be evaporation and heat absorption, so the wet and cold in the south is from the inside out.

It's getting colder and wetter, which is a cycle. For the winter in the south, it feels colder indoors than outdoors, and the relationship is slightly more complicated.

The higher the temperature, the higher the proportion of maximum moisture that can be contained in the air; That is to say, with the same amount of water vapor and the same absolute humidity, the lower the temperature, the higher the relative humidity will be. Relative humidity is the ratio of absolute humidity to maximum humidity, and absolute humidity is constant. The lower the temperature, the smaller the maximum humidity as the denominator and the larger the final value.

So in fact, everyone thinks that the south is wetter than the north, which is also related to the temperature. There is heating in winter in the north, and heating in the south basically depends on air conditioning. The temperature of air conditioning can't reach the height of heating, so the indoor temperature in the south is relatively low, so the feeling of humidity will be more obvious.

If you want to keep the windows from condensation, try not to point the heating and hot air at people, but stay close to the places where cold air enters, such as windows. The heating in the home needs to run continuously, especially at night, to avoid the curtains and external walls from getting wet.

In rainy and snowy weather and low temperature, air conditioning heating is not as good as gas heating, or even as good as electric heating. When the economic conditions permit, it is not recommended to adopt a separate space and turn off the heating mode, which is uncomfortable on the one hand and unsanitary on the other.

In winter, when the temperature is 18~25℃ and the relative humidity is 30%~80%, most people will feel more comfortable. Considering the influence of temperature and relative humidity on people's thinking activities, the most suitable room temperature should be 65438 08℃ and relative humidity should be 40%~60%.

Difference between dry cooling and wet cooling

1, different humidity: wet cold and dry cold, the main difference lies in the different humidity. It's dry and cold, and the wind in the north is dry. Although the wind is very cool, but only the surrounding temperature drops, people's somatosensory temperature changes little. Wet and cold, that is, the air temperature is low and the relative humidity is high, and the human body temperature is obviously lower than the ambient temperature.

2. Different effects on the skin. When it is dry and cold, the humidity is low and the air is dry, which will make the skin face serious water shortage. When it is wet and cold, the blood circulation slows down, which disturbs the balance of water and oil, slows down the absorption of skin care products, and produces dry lines in air-conditioned environment.

3, the human body feels different temperatures: under the same temperature conditions, wet and cold make people feel colder. Because in the cold winter, people will lose more heat in contact with the outside world, and the thermal conductivity of humid air is much higher than that of dry air, and the temperature of human body will be quickly emitted, which increases the heat dissipation of human body, thus making people feel cold and cold.