Air pressure = 2 atm, the temperature is 120 degrees Celsius.
For the (relative) working pressure of 50kPa/120kPa, the absolute pressure of 151325Pa/221325Pa, corresponding to the boiling point of 111.6 ℃, 123.4 ℃, so that the household pressure cooker using temperature is about 110 ~ 120 ℃, the maximum temperature should not exceed the temperature value, otherwise the automatic exhaust valve will open, in case more than this temperature is not safe.
In fact, most of the pressure cooker nominal working pressure of 80kPa, that is, the operating temperature of 117 to 118 ℃.
The pressure cooker temperature should not exceed 2 atmospheres and the temperature will not exceed 120 degrees Celsius, otherwise it is dangerous.
If you want to increase the temperature, the pressure relief device will be heavier, up to 8 atmospheric pressure can be burned, this time the temperature can reach more than 160 degrees Celsius, but the general pressure cooker, there will be obvious deformation, it is very dangerous.
What is the temperature of boiling water in a pressure cooker
It depends on what the pressure value of the pressure cooker is. Water, the boiling point increases with increasing pressure.
The temperature of boiling water in a pressure cooker is usually around 120 degrees Celsius.
108 degrees Celsius, which is second year physics textbook knowledge.
The temperature varies from 110 to 122 degrees.
Sea level is 100 degrees Celsius, and high altitudes are set below 100 degrees Celsius depending on the altitude.
Pressure cooker sterilization useful
Because the home pressure cooker, the temperature can also be more than one hundred degrees, can also play a role in disinfection, sterilization. But not all can kill the virus, because some viruses are inactivated by low temperature.
In our daily lives, there is no easier and safer and more effective method of disinfection than boiling water sterilization. Compared to expensive facilities and chemicals that leave an uneasy residue, boiling water is easy to use and leaves no harmful residue. However, sterilization is not achieved by pouring boiling water over it. To achieve satisfactory sterilization results, proper handling is required.
Generally, the temperature of boiling water is 100℃. This temperature, different bacteria create different effects. Some bacteria as long as 2 minutes or so is enough to die, and some bacteria to a longer period of time. So generally through the boiling water sterilization, heating time for 5 to 15 minutes is appropriate. Achieving this condition will kill most of the harmful bacteria. Of course, if feasible, can be put into the autoclave sterilization, the temperature inside can reach 120 +, the effect of bacterial inactivation is better. Typically, this is used for sterilizing glassware in general, including milk jugs and petri dishes. However, it is necessary to pay attention to the temperature, many regions of China's boiling water is not 100 ℃, the use of this boiling water sterilization effect will be greatly reduced or even completely failed to achieve the purpose of sterilization.
Bacteria encountered in our daily life, within a certain temperature range, the lower the temperature, the slower the bacterial reproduction; the higher the temperature, the faster the reproduction (general microbial growth of the appropriate temperature of 28 ℃ -37 ℃). However, if the temperature is too high, the bacteria die because of protein denaturation. The use of heating disinfection method is actually to use the characteristics of the pathogen is not very heat-resistant, with the appropriate temperature and holding time to deal with all of them will be killed. But a small part of the heat-resistant bacteria or bacterial spores will not die, so daily life is not sterilized after you can rest assured that you can not use the medical equipment after such treatment.