Human beings are most suitable for internal and external temperatures, and the external temperature

Hello landlord.

Regarding the most adaptable internal environment temperature of the human body, it is almost 36 37 °.

But the most suitable outside temperature is not 37 degrees. This is because of the operation of various mechanisms inside the human body and the activity requirements of various biological enzymes, the temperature inside the human body will be about 37 degrees. So this temperature is a demand value.

The outside of the human body is the first to feel the temperature. The temperature felt is not the temperature inside the human body, but the temperature outside. For this ** temperature, the palm of the hand bears the maximum temperature.

It does not mean that the outside temperature is equal to the internal temperature, it is the temperature that is most adaptable. But the temperature that makes ** feel comfortable is the most adaptable.

For example, if the outside temperature is optimally 18°C, then the air conditioner should be turned on to 18°C. It won't be cold at 18° in winter.

However, the human body adapts to the temperature of about 26 degrees. Then the air conditioner can be turned on to 26 degrees. It feels cold because you are in the position of the air conditioner.

Similarly, if it is 26 degrees Celsius in winter, you will not feel cold, but if there is wind, you will feel cold.

In short, it is a very complex issue. The landlord only needs to remember that the internal ambient temperature is not the most suitable for the external ambient temperature.

Retreat answers, if you have any questions, please feel free to ask.

When the outside temperature is lower than the human body temperature, the heat dissipation mode is through radiation, conduction, and convection.

When the ambient temperature is equal to or higher than the ** temperature, evaporative heat dissipation is the only way to dissipate heat.

1. Radiation heat dissipation: dissipating the heat of the body to the surrounding objects with low temperature in the form of heat rays is called radiation heat dissipation. This is the main way to dissipate heat in a quiet state and is affected by the ambient temperature.

When the outside temperature is equal to or exceeds the body temperature, the radiant heat dissipation fails, and the body temperature rises. People get heat stroke.

2. Conduction heat dissipation: It is to transmit the heat from the deep part of the body to the surface of the human body in a conductive way, and then transfer it to the clothes and other objects in direct contact with it. Because clothing and other items are poor conductors of heat, heat transfer is extremely slow, and the thermal conductivity of human subcutaneous fat is low, so the heat dissipated through conduction is very small.

3. Convection heat dissipation: It is a special conduction heat dissipation method, which dissipates body heat into the middle of the air with the help of continuous air flow. Convection heat dissipation is greatly affected by wind speed, so the principle of convection heat dissipation can be used to loosen clothes for patients with high fever and place them in a well-ventilated room for physical cooling.

4. Evaporative heat dissipation: It is a method that can be used when the external temperature is equal to or exceeds the body temperature, and can not be dissipated with the help of radiation, conduction and convection, evaporation and heat dissipation is a very important way of heat dissipation, antipyretic drugs have a sweating effect, after the patient sweats, a large amount of body heat can be taken away by the evaporation of sweat to achieve the purpose of reducing fever.

When the ambient temperature is lower than the body temperature, radiation, conduction, and convection heat dissipation are the main methods, and when the ambient temperature is higher than or equal to the body temperature, evaporative heat dissipation is the main one.

1. Radiation: Objects can achieve temperature equilibrium by using infrared rays that radiate and absorb each other's infrared rays without any medium.

2. Conduction: direct contact between objects, heat energy is directly vibrated by atoms, and transmitted from high temperature to low temperature.

3. Convection: The fluid is used as the medium between objects, and the thermal expansion and contraction of the fluid and the characteristics of the flow can be used to transfer heat energy.

Examples:

For example, when we put our hands on top of the soup, we can feel the heat in our hands, which is the natural convection of air.

For example, air conditioning heating, there is a fan inside the air conditioner, which forcibly blows out the heat, which is the forced convection of the air.

For example, if a cup of cold water and a cup of hot water are poured into a large cup at the same time, the mixing of cold and hot water is the natural convection of the liquid.

If these two cups of water are connected, and a circulating pump is added in the middle, there is an external force, which is the forced convection of the liquid. For example, for gas wall-hung boiler heating, the hot water between the wall-hung boiler and the floor heating pipe, and between the wall-hung boiler and the radiator has a circulating pump to force circulation, which belongs to the forced convection of liquid.

The optimum temperature for humans is between 21 and 23 degrees Celsius. This temperature range not only makes us feel comfortable, but also contributes to our health and efficiency.

Within this range, our bodies don't have to waste too much energy to regulate our body temperature, so it's easier for us to focus and stay focused. In addition, this temperature range also helps maintain our immune system and protect our body from disease.

When the ambient temperature is too high or too low, our body needs more energy to regulate body temperature, which can cause our body to become exhausted, less efficient, and can lead to health problems. High temperatures can also lead to dehydration and heat stroke.

However, it is important to point out that the optimal temperature range varies from person to person, and different people feel the temperature differently. Some people may prefer colder or warmer temperatures, and the humidity and wind speed in the environment can also affect how we feel about temperature.

Therefore, when determining the optimal temperature, each person's personal preferences and physical needs, as well as the influence of environmental factors, should be taken into account. In addition, the optimal temperature varies depending on the season and region, and needs to be adjusted according to the specific situation.

In conclusion, 21 to 23 degrees Celsius is one of the most suitable temperature ranges for humans, which helps us to stay comfortable and healthy, and to be more productive. Of course, individual differences and the influence of environmental factors should be taken into account when determining the most suitable temperature, and appropriate adjustments should be made according to the situation. <>

Scientists have found that the environmental sources that come to 25 are the most suitable for human life. At this temperature, there is no feeling of heat and cold in the human body, and the capillaries in the body are dilated and balanced, and the feeling is very comfortable. In summer, the optimal temperature for the human body is slightly higher than 25, which is 26 28.

When the temperature starts to rise until it exceeds 32, the body starts to heat up and mood swings. At this time, you need to take some measures to regulate your body temperature.

In addition to temperature, humidity is also very important, when the humidity is greater than 95%, the human body feels very stuffy, the body surface sweating is blocked, the heat dissipation is poor, ** feels moist and sticky, and at the same time it is difficult to breathe, causing people to have to open their mouths to gasp. At the same time, the mood began to become boring. Of course, too low humidity is not good, and too dry environment is easy to cause **peeling.

The most suitable humidity for human life is 45% to 65%.

Ambient temperature limit: about 116 Scientists have experimented on the maximum temperature that the human body can tolerate in a dry air environment: the human body can last for a full 1 hour in an environment of 71; At 82 hours, it can last 49 minutes; At 93 hours, it can last 33 minutes; At 104, it only lasts 26 minutes.

However, according to the relevant literature, the extreme temperature that the human body can tolerate seems to be higher. Minimum body temperature limit: approximate solution:

This is the result of testing. In 1994, a 2-year-old Canadian girl named Kalikosolovsky was locked out of the door for six hours, and it was said that the outside temperature was 22 at the time. In the end, the little girl was lucky to save her life, except for one left leg that had to be amputated due to frostbite.

Approximate Solution: This is also a result of concrete evidence. In 1980, when the temperature in Atlanta, Georgia, USA was 32 2, 52-year-old Willie Jones was admitted to Grady Memorial Hospital in Atlanta due to heat stroke, when his temperature reached a record high of 46 5, and it took 24 days for the fever to completely subside.

Minimum body temperature limit: approximately.

The lower limit of axillary temperature in normal people is usually lower than 36 in some people, but it is extremely rare.

The minimum body temperature limit for the human body is approximately the result of testing.

Maximum body temperature limit: approximately.

The upper limit of axillary temperature in a normal person is usually 42 if there is a feverBut the maximum body temperature limit for the human body is about.

Ambient temperature limit: approx. 116

The ambient temperature limit is the temperature at which the human body can still breathe while in the middle of it. Experiments have found that due to the inability to evaporate heat through perspiration, the ability of people to withstand high temperatures in water is significantly lower than that in dry air.

Scientists have experimented on the highest temperature that the human body can tolerate in a dry air environment: the human body can last for a full 1 hour in an environment of 71; At 82 hours, it can last 49 minutes; At 93 hours, it can last 33 minutes;

At 104, it only lasts 26 minutes. However, according to the relevant literature, the limit temperature that the human body can tolerate.

It seems to be a little higher.