Insulating glass can effectively reduce the heat transfer coefficient U value of the glass system, is a very cost-effective means of energy saving, has been widely used in construction. The principle of insulating glass is to insert a layer of well-insulated air between the glass, acting as a bottleneck to reduce the overall heat transfer coefficient. With the continuous progress of glass technology, such as low-e glass technology, the "bottleneck" material requirements are also higher and higher, and inert gas has a lower thermal conductivity than dry air, a more stable chemical structure, and therefore is widely used in high-grade insulating glass hollow layer material.
In addition to the unseen "energy saving" brought by the inert gas filling, it will also bring some practical effects, such as reducing the temperature difference between the two sides of the glass glass, reducing the chances of condensation on the surface of the glass.
Question 2: What is the use of argon in the hospital, is the medical details Argon in the high-frequency high-voltage electric effect, was ionized into argon ions, argon ions have excellent electrical conductivity, can continuously pass the electric current, energy transfer to the tissue to play a role in coagulation. And argon itself in surgery can reduce bleeding wound temperature, reduce the oxidation of damaged tissue, carbonization (smoke, crust) and tissue damage. Therefore, argon gas is commonly used in medical treatment in high-frequency argon knife and other surgical instruments, the current use in medical treatment is mainly high-frequency argon knife and argon helium knife for tumor treatment.
(A) high-frequency argon knife
Principle: high-frequency current (more than 500 kilohertz) to the ionization of argon ions, the formation of bundles of argon ion arcs, because the high-frequency electricity is safe for the human body, so the high temperature formed by argon ions to the tissue for cutting and hemostasis.
The clinical use of argon knife: commonly used in the digestive tract hemostasis (endoscopy), liver transplantation of the necessary equipment, surgical procedures in the large area of hemostasis, such as thoracic surgery.
Argon ion coagulation (APC) is a non-contact electrocoagulation technique that reduces the temperature of the wound surface during surgery, reduces oxidation and charring of the damaged tissue (smoking and scorching), and makes the surface of the lesion appear whitish, yellowish, or even dark-like (preventing recurrence and erosion of the wound surface by digestive juices). The method through the argon ion current will be high-frequency current energy conduction to the surface of the target tissue so as to achieve the role of coagulation necrosis.
The equipment generally consists of an argon source, an argon flow meter, a unipolar high-frequency current generator, transmission tubing, and a treadle switch.
(B) argon helium knife
Argon helium knife is one of the current methods of tumor treatment, and its principle is realized by the method of acute freezing and acute warming of tissue cells. It is simpler than surgery, chemotherapy and radiotherapy treatments, with fewer side effects and lower cost, but there are also problems of freezing range control, post-freezing residual problems, and its indications are also limited to some extent.
Principle of argon-helium knife treatment: when treated with argon-helium knife, the physician will superconducting needle into the tumor, in less than a minute, the temperature of the center of the tumor will drop to minus 140 degrees Celsius, so that the entire treatment range of the tumor is quickly knotted into a hard ball of ice. When frozen to the required time, and in a very short period of time the temperature of the tumor body will rise to 20 ℃ -43 ℃ above zero, so repeat the two sudden cold and heat alternation, you can destroy the tumor cells into fragments, so as to achieve the therapeutic purpose.
The working principle of argon helium knife: argon helium knife can control 4 or 8 cold knife, cold knife rod internal hollow, can output high-pressure room temperature argon, based on Joule-Thomson principle of argon in the tip of the knife rapid release of refrigeration in 60 seconds, rapid freezing of the tumor tissue to minus 140 ° C-190 ° C to form an ice ball, freezing for about 15 minutes, the output of helium rapid heating of the lesion in the ultra-cold state of the tissue to -20℃-40℃, general treatment requires 2 freeze-thaw cycles.
Question 3: Why use argon in refining, what are the benefits Inert gas treatment: blowing inert gas into the steel, this gas itself does not participate in the metallurgical reaction, but from the rise of the steel in each small bubble is equivalent to a "small vacuum chamber" (bubbles in the H2, N2, CO partial pressure is close to zero), has a "gas wash". "Gas washing" effect. Furnace refining method for the production of stainless steel is the principle of the application of different CO partial pressure of carbon and chromium and temperature equilibrium between the relationship. Inert gas with oxygen for refining decarburization, you can reduce the CO partial pressure in the carbon-oxygen reaction, in the lower temperature conditions, the carbon content is reduced and chromium is not oxidized.
Question 4: how to use the argon table This is normal, just open sure there is gas out, but the back did not continue to out of gas, the steel ball went down. As long as you weld or continue to open the gas, the steel ball will not fall down.
I hope my answer is useful to you, if you are satisfied, please adopt ~
Problem five: argon arc welding in the welding of argon, what role does it play
Problem six: what is argon baike.so/doc/24733-25775
Problem seven: hospitals use argon what is it for medical purposes, it is medical Details argon in the high frequency Under the action of high-voltage electricity, is ionized into argon ions, argon ions have excellent electrical conductivity, can continuously pass the current, the energy will be transferred to the tissue to play a role in coagulation. Argon gas itself in surgery can reduce bleeding wound temperature, reduce the oxidation of damaged tissue, carbonization (smoke, crust) and tissue damage. Therefore, argon gas is commonly used in medical treatment of high-frequency argon knife and other surgical instruments, the current use in medical treatment is mainly high-frequency argon knife and argon helium knife for tumor treatment.
(A) high-frequency argon knife
Principle: high-frequency current (more than 500 kilohertz) to the ionization of argon ions, the formation of bundles of argon ion arcs, because the high-frequency electricity is safe for the human body, so the high temperature formed by argon ions to the tissue for cutting and hemostasis.
The clinical use of argon knife: commonly used in the digestive tract hemostasis (endoscopy), liver transplantation of the necessary equipment, surgical procedures in the large area of hemostasis, such as thoracic surgery.
Argon ion coagulation (APC) is a non-contact electrocoagulation technique that reduces the temperature of the wound surface during surgery, reduces oxidation and charring of the damaged tissue (smoking and scorching), and makes the surface of the lesion appear whitish, yellowish, or even dark-like (preventing recurrence and erosion of the wound surface by digestive juices). The method through the argon ion current will be high-frequency current energy conduction to the surface of the target tissue so as to achieve the role of coagulation necrosis.
The equipment generally consists of an argon source, an argon flow meter, a unipolar high-frequency current generator, transmission tubing, and a treadle switch.
(B) argon helium knife
Argon helium knife is one of the current methods of tumor treatment, and its principle is realized by the method of acute freezing and acute warming of tissue cells. It is simpler than surgery, chemotherapy and radiotherapy treatments, with fewer side effects and lower cost, but there are also problems of freezing range control, post-freezing residual problems, and its indications are also somewhat limited.
Principle of argon-helium knife treatment: when treated with argon-helium knife, the physician will superconducting needle into the tumor, in less than a minute, the temperature of the center of the tumor will drop to minus 140 degrees Celsius, so that the entire treatment range of the tumor is quickly knotted into a hard ball of ice. When frozen to the required time, and in a very short period of time the temperature of the tumor body will rise to 20 ℃ -43 ℃ above zero, so repeat the two sudden cold and heat alternation, you can destroy the tumor cells into fragments, so as to achieve the therapeutic purpose.
The working principle of argon helium knife: argon helium knife can control 4 or 8 cold knife, cold knife rod internal hollow, can output high-pressure room temperature argon, based on Joule-Thomson principle of argon in the tip of the knife rapid release of refrigeration in 60 seconds, rapid freezing of the tumor tissue to minus 140 ° C-190 ° C to form an ice ball, freezing for about 15 minutes, the output of helium rapid heating of the lesion in the ultra-cold state of the tissue to -20℃-40℃, general treatment requires 2 freeze-thaw cycles.
Problem eight: what is argon an inert gas, air content of 0.932%
Problem nine: why use argon refining, what are the benefits of inert gas treatment: inert gas blown into the steel, the gas itself does not participate in metallurgical reactions, but from the steel water rises in each of the small bubbles are equivalent to a "small vacuum chamber "(The partial pressure of H2, N2, CO in the bubble is close to zero), has a "gas washing" effect. Furnace refining method for the production of stainless steel principle, is the application of different CO partial pressure of carbon and chromium and temperature equilibrium between the relationship. Refining decarburization with inert gas plus oxygen can reduce the CO partial pressure in the carbon-oxygen reaction, in the lower temperature conditions, the carbon content is reduced and chromium is not oxidized.
Question 10: argon arc welding in the welding of argon gas, it plays what role