What time of day is the highest indoor temperature?

The temperature slowly rises after sunrise and reaches its highest level around 2 p.m. and then gradually decreases again. There is no definite answer to the indoor air temperature, because the indoor temperature is affected by many factors, such as the structure of the house, the material, the height, the area, and the light transmittance.

The highest temperature is around 2 p.m. of the day. The coldest time is around sunrise There is no accurate concept of time. Winter and summer will be different from region to region.

First of all, we must understand the heat of the atmosphere, the heat of the atmosphere does not come from the radiation of the sun, but from the ground, the atmosphere is basically transparent to solar radiation, but has a strong absorption capacity for ground radiation. Here's how it works; Solar radiation heats up the ground, and when the ground gets heat, it radiates energy outward, and most of this heat is absorbed by the atmosphere. In this way, the temperature of the atmosphere rises.

At 12 o'clock at noon, it is indeed the time of the day when the sun is the highest (the strongest solar radiation), and it is also the time when the ground receives the most solar heat, but at this time, the amount of solar energy obtained by the ground is more than the heat lost by the ground, and the ground temperature rises further, and at about 13 o'clock, the solar heat obtained by the ground is equal to the heat lost by the ground, and the ground temperature reaches the highest value, and the ground transmits this heat to the atmosphere for about 1 hour, therefore, at 2 o'clock in the afternoon (that is, 14 o'clock), Temperatures reach the highest of the day. The relative indoor temperature is also the highest.

The highest temperature of the day generally occurs around 2 p.m., because the maximum daily temperature of the air near the surface occurs 1 to 2 hours after the maximum solar altitude angle under clear clouds, light winds, and no temperature advection, and 12 noon is the time when the solar altitude angle is at its maximum. So the highest temperature of the day usually occurs around 2 p.m.

When the sunlight hits the ground, it heats the ground, and the heat absorbed by the ground is released to dry the air, so after the ground is heated, it will take a while to make the temperature rise. After noon, the heat emitted by the ground is still less than the heat supplied by the sun until the afternoon.

At two or three o'clock, the ground temperature can rise to the highest, and the temperature is the highest.

The appropriate temperature for the room temperature is 18-25. The body temperature of the human body is a dynamic balance, that is, the balance between heat production and heat dissipation, and when the outside temperature reaches 36 degrees, the body temperature will also rise, and the heat production and heat dissipation are appropriate when the temperature is about 23 degrees, so the body will feel comfortable. If the temperature exceeds 35, the body's sweat glands will start to activate, and the body temperature will be stored through slight sweating, and there will be general discomfort and fatigue.

When the human body is properly dressed, the warmth is sufficient, and it is in a quiet state, the indoor temperature of 18-24 is more comfortable, 18 has no cold feeling, and 15 is the temperature limit that produces a significant cold feeling. Therefore, in order to improve the quality of life and meet the requirements of adjustable room temperature, according to the relevant content of the national standard GB5009-2003 "Design Code for Heating, Ventilation and Air Conditioning", the indoor temperature range of the main rooms of civil buildings is set at 18-24. When the ambient temperature is 18-25, the relative humidity is 40-70; When the temperature is 24-30 and the humidity is less than 60, the human body feels hot but not stuffy; When the temperature is higher than 30 and the humidity is greater than 70, the human body will feel stuffy; When the temperature is higher than 36 and the humidity is greater than 80, the human body feels stuffy and unbearable, the sweating mechanism is blocked, and it is very easy to suffer from heat stroke.

The highest temperature of the day usually occurs at 14-15 o'clock. The heat of the atmosphere does not come from solar radiation, but from the ground, and the atmosphere is basically transparent to solar radiation, but has a strong absorption capacity for terrestrial radiation. The process is:

Solar radiation heats up the ground, and when the ground gets heat, it radiates energy outward, and most of this heat is absorbed by the atmosphere. In this way, the temperature of the atmosphere rises.

When the sun is the highest (the strongest solar radiation), it is also the time when the ground receives the most solar heat, but at this time, the amount of solar energy obtained by the ground is more than the heat lost by the ground, and the ground temperature rises further, and at about 13 o'clock, the solar heat obtained by the ground is equal to the heat lost by the ground, and the ground temperature reaches the highest value, and the ground then transmits this heat to the atmosphere, and the time is about 1 hour, so at 2 o'clock in the afternoon (that is, 14 o'clock), the temperature reaches the highest value of the day.

The coldest and hottest time of the day.

The highest temperature of the day usually occurs at 2 p.m. (2 p.m.), when the atmospheric radiation is at its strongest. At 12 noon, solar radiation is at its strongest, and at 1 p.m. at 13 o'clock, it is the time when ground radiation is at its strongest. (And the coldest time of the day is around sunrise.) ）

12 noon is the time of the day when the sun is at its highest (and the solar radiation is the strongest), and it is also the time when the ground receives the most solar heat. But the temperature reaches its highest of the day at 2 p.m. (2 p.m.).

At 2 p.m. (2 p.m.), the temperature reaches its highest value of the day.

12 o'clock in the afternoon, indeed.

The highest version of the sun (the strongest solar radiation) is also the time when the ground receives the most solar heat, but at this time, the ground gets more solar energy than the ground loses more heat, and the ground temperature rises further, and at about 13 o'clock, the solar heat obtained by the ground is equal to the heat lost by the ground, and the ground temperature reaches the highest value, and the ground then transmits this heat to the atmosphere for about 1 hour, so at 2 p.m. (that is, at 14 o'clock), the temperature reaches the highest value of the day. (Hope adoption).

If it's a sunny day.

In winter, it's around 2 o'clock.

In the summer, it's around 3 o'clock.

Here we must first understand the heat of the atmosphere, the heat of the atmosphere does not come from solar radiation, but from the ground, the atmosphere is basically transparent to the high recessed and hidden emission of solar radiation, but has a strong absorption capacity for ground radiation. The process goes like this: solar radiation heats up the ground, and when the ground gets heat, it radiates energy outward, and most of this heat is absorbed by the atmosphere.

In this way, the temperature of the atmosphere rises.

At 12 o'clock at noon, it is indeed the time when the sun is the highest (the strongest solar radiation) in Qi Hall, and it is also the time when the ground gets the most solar heat, but at this time, the amount of solar energy obtained by the ground is more than the heat lost by the ground, and the ground temperature rises further, about 13 o'clock, the solar heat obtained by the ground is equal to the heat lost by the ground, and the ground temperature reaches the highest value, and the ground then transmits these heat to the atmosphere, the time is about 1 hour, therefore, at 2 o'clock in the afternoon (that is, 14 o'clock), Temperatures reach the highest of the day.