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日本日立制作所在综合各种最新技术后研制出世界上制冷能力最大的一万冷冻吨的冷冻机。该机的远心式压缩机燃烧液化天然气作动力,其叶轮和整流板效率较高,热交换器改用了高性能传热管,占地面积比过去最大的7000吨冷冻机约减小25％。·日本三菱嫘萦公司研制出用海草及树木抽出的天然多糖类制成的新型包装材料,其特点是可以食用,且加热后可自行溶化,食品不必打开包装。
Japan’s Hitachi production after the synthesis of the latest technology developed the world’s largest refrigeration capacity of 10,000 frozen tons of freezer. Its telecentric compressor burns liquefied natural gas and its impeller and baffle are more efficient. The heat exchanger is replaced by a high-performance heat transfer tube, which covers an area of about 25 less than the largest 7,000-ton freezer in the past. %. · Mitsubishi Rayon Co., Ltd. developed a new type of packaging material made of natural polysaccharides extracted from seaweed and trees, which is characterized by being edible and can be melted by heating, without opening the package of the food.