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【Chemical Machinery Equipment Network Hotspot Concerns ] The most indispensable part of the Winter Olympics is all kinds of ice, how to make high-quality ice surface that meets the requirements of the competition is very important
.
In the Beijing competition area, 7 of the 15 ice surfaces in the Winter Olympics are made by carbon dioxide transcritical direct cooling ice-making technology, which makes the 2022 Beijing Winter Olympics the first large-scale use of carbon dioxide refrigerant in history.
the Olympic Games
.
Chemical machinery and equipment network hot spotsChemical machinery and equipment.
In the Beijing competition area, 7 of the 15 ice surfaces in the Winter Olympics are made by carbon dioxide transcritical direct cooling ice-making technology, which makes the 2022 Beijing Winter Olympics the first large-scale use of carbon dioxide refrigerant in history.
the Olympic Games
.
Yes, carbon dioxide is indeed a greenhouse gas, but in refrigeration, it is an environmentally friendly refrigerant
.
The refrigeration we are talking about here refers to artificial refrigeration, which is the use ofRefrigeration equipment , which reduces the temperature of the object to be cooled to less than the surrounding ambient temperature
.
Take carbon dioxide transcritical direct cooling to make ice as an example, that is, to reduce the temperature of water until it becomes the state of ice
.
In the artificial refrigeration process, the role of the refrigerant is very important.
It will work in a cycle in the refrigeration equipment and play the role of heat transfer.
Freon, which we often hear about, is a very common type of refrigerant
.
refrigeration equipment.
The refrigeration we are talking about here refers to artificial refrigeration, which is the use ofRefrigeration equipment , which reduces the temperature of the object to be cooled to less than the surrounding ambient temperature
.
Take carbon dioxide transcritical direct cooling to make ice as an example, that is, to reduce the temperature of water until it becomes the state of ice
.
In the artificial refrigeration process, the role of the refrigerant is very important.
It will work in a cycle in the refrigeration equipment and play the role of heat transfer.
Freon, which we often hear about, is a very common type of refrigerant
.
Carbon dioxide is used as a refrigerant to circulate in the refrigerator, which is mainly composed ofIt consists of four parts: compressor , condenser (cooler), expansion valve and evaporator
.
compressor.
Carbon dioxide transcritical refrigeration cycle In the subcritical cycle system, the pressure during condensation is lower than the critical pressure of carbon dioxide; in the transcritical cycle system, the carbon dioxide is in a supercritical state in the cooler, releasing heat at a constant pressure, and no complete material is produced.
State phase change, the pressure in the evaporator is less than the critical pressure, at this time, carbon dioxide exchanges heat with the surrounding environment, absorbs heat, and reduces the temperature of the surrounding environment
.
Carbon dioxide transcritical refrigeration cycle system has high pressure and large pressure difference, and requires high strength of system components, so it has not been widely used for a long time
.
This time, the Beijing Winter Olympics successfully used carbon dioxide transcritical direct cooling ice-making technology to complete the preparation of 7 ice surfaces.
The technical support behind it is the iterative upgrade of core hardware such as compressors, heat exchangers and regenerators, which is the hard power of science and technology.
manifest
.
It seems that the ice on the Winter Olympics is not only the fastest ice, but also the ice with high technology content
.
State phase change, the pressure in the evaporator is less than the critical pressure, at this time, carbon dioxide exchanges heat with the surrounding environment, absorbs heat, and reduces the temperature of the surrounding environment
.
Carbon dioxide transcritical refrigeration cycle system has high pressure and large pressure difference, and requires high strength of system components, so it has not been widely used for a long time
.
This time, the Beijing Winter Olympics successfully used carbon dioxide transcritical direct cooling ice-making technology to complete the preparation of 7 ice surfaces.
The technical support behind it is the iterative upgrade of core hardware such as compressors, heat exchangers and regenerators, which is the hard power of science and technology.
manifest
.
It seems that the ice on the Winter Olympics is not only the fastest ice, but also the ice with high technology content
.
Refrigerator is a high-end scientific research instrument that can provide an environment close to absolute zero.
It is widely used in scientific research fields such as condensed matter physics, material science, particle physics and even astronomical detection
.
Commercially available low-temperature refrigerators can achieve extremely low temperatures of only 0.
01 degrees above absolute zero without the assistance of liquid helium, which can provide quantum computer chips with the extremely low-temperature environment necessary to maintain quantum states
.
It is widely used in scientific research fields such as condensed matter physics, material science, particle physics and even astronomical detection
.
Commercially available low-temperature refrigerators can achieve extremely low temperatures of only 0.
01 degrees above absolute zero without the assistance of liquid helium, which can provide quantum computer chips with the extremely low-temperature environment necessary to maintain quantum states
.
Quantum computing is the main battlefield of scientific and technological competition among countries around the world.
The refrigerator provides the necessary extremely low temperature environment for the normal operation of quantum computers, and is an irreplaceable key device in quantum computing research
.
At present, such instruments in China are completely dependent on imports, which are the key core technologies that need to be broken down urgently
.
Therefore, the development of domestic refrigerators is imminent
.
The refrigerator provides the necessary extremely low temperature environment for the normal operation of quantum computers, and is an irreplaceable key device in quantum computing research
.
At present, such instruments in China are completely dependent on imports, which are the key core technologies that need to be broken down urgently
.
Therefore, the development of domestic refrigerators is imminent
.
Source: Tadpole Staff, Global Times, Encyclopedia
Original title: Refrigerator to create "human high-quality" ice surface localization development speed up
