我国是一个发展中的国家,七十年代初期我国商业系统一百多万吨食品冷藏库除了个别试验库外,制冷系统几乎都没有自动控制。如果制冷系统能够实现自动控制,对冷藏食品的保质保鲜和节能,都将有明显好处。十多年来我国推行制冷系统自动化,我们冷藏库里手动 China is a developing country. In the early 1970s, more than 1 million tons of commercial refrigerators in China’s commercial systems were not automatically controlled except for a few pilot laboratories. If the refrigeration system can be controlled automatically, there will be significant benefits to the quality and freshness of the refrigerated food and energy saving. More than a decade of China’s implementation of refrigeration system automation, we manually cold storage