Refrigerator can thin aircraft can reduce noise

Regardless of the type of refrigerator, there is always a thick refrigerator door. “The refrigerator door needs a certain volume to place traditional insulation materials, so the door is always made very thick.” At yesterday's 12th International Conference on Vacuum Insulation Materials, Professor Chen Zhaofeng of China Southern Airlines Material Institute introduced a new type of Insulation material "Ultrafine Aviation Grade Glass Wool" not only enables the thick refrigerator door to become only half the thickness of the "traditional version", but it will also be used on large domestic aircraft to reduce fuel consumption and noise for large aircraft.

At the scene of the event, we finally saw this new type of material that was "not attractive." In a transparent sealed bag, "glass wool" is neatly stacked, and the material is currently in the state of ultra-fine glass fiber, which can be processed in accordance with the different needs of the product. Chen Zhaofeng said that professional terminology uses “thermal conductivity” as a measure of insulation material. The thermal conductivity of traditional insulation foam is 40 milliwatts, while the new material we studied has a thermal conductivity of only 1.5 milliwatts.

"Ultrafine aviation grade glass wool" fiber diameter of only 3 - 5 microns, not only has a lower thermal conductivity, better thermal insulation characteristics, but also can greatly reduce the "insulation layer" required thickness. A new material company in Suzhou, in cooperation with Prof. Chen Zhaofeng and responsible for the production of “glass wool”, brought a home straight-tube water heater model at the event. According to the person in charge of the company, the surrounding of the water heater model is wrapped with the “glass wool” developed by Prof. Chen’s team. The overall size of the water heater is almost the same as the original, but the insulation performance has greatly improved. Chen Zhaofeng told us that if the "glass wool" is placed in the "insulated layer" of household refrigerator doors, the thickness of the refrigerator door can be greatly reduced, and the refrigeration efficiency of the refrigerator can also be improved.

It is reported that "ultrafine aviation grade glass wool" has been put into use in some refrigerators and vending machines in Japan and South Korea, and domestic electric appliance companies are expected to put into production. However, “Ultrafine Aviation Grade Glass Wool” ultimately has a greater use. The R&D team has established cooperation with the domestically-made C919 large aircraft. China’s self-produced large aircraft will also use “glass wool” to reduce fuel consumption and noise reduction. purpose.