Countermeasures against Freon gas are delayed ③

Expand business opportunities related to CFC countermeasures Prof. Hideaki Nakane of Kochi University of Technology (environmental science) is important not only to strengthen the application of penalties, but also to develop CFC-less greenhouse effect and use of alternative substances. Although it is not a frontal penalty, the development of substitutes for each company is progressing. The development of refrigerant, foaming agents, and detergents using a completely different type of material is also underway. For example, a large commercial refrigerator for ammonia and refrigerant is considered the use of old-fashioned ammonia, there is toxicity and flammable ammonia, there is a problem in the use of household refrigerators, Instead, hydrocarbons such as propane and butane have been researched and developed. Hydrocarbon. It seems that there is no problem because the amount of filling is small in the refrigerator for the home though it is flammable. In Europe, household refrigerators that use hydrocarbons are quite popular. Japan manufacturers have started production and sales since 2002. The introduction of hydrocarbons into air conditioners is also under research and development. Sales have been started in the Germany. Although non-flammable carbon dioxide is an ideal refrigerant, there is a drawback that there is no refrigerant effect in the environment with high outside temperature. However, the research and development to use it for the car air conditioner advances. On the other hand, the MH refrigeration system which uses the property "The heat is discharged when the hydrogen is absorbed and the hydrogen is emitted, and absorbs the heat" of the hydrogen adsorption alloy of the refrigeration system which does not use the refrigerant is one of the attempts. In addition, the electronic device is systemized. A system that utilizes the Peltier effect of "heat transfer from one metal to the other metal when electricity is passed to the junction of two metals", the cooling of the processor of the computer and the small refrigerator of the hotel and the hospital because it is quiet It is already used for the refrigerator of the wine only. Hydrocarbon and carbon dioxide for the foaming agent, the conversion to water has been partially practical, for the propellant is converted to hydrocarbons (liquefied natural gas: LPG) except for special applications. Water or the like is used for the cleaning agent. Environmental business is a mission to improve the environmental impact of "century in the Environment" in the 21st century, the needs are just growing.