第一部分:1875年前的制冷史一、引言我们可将1755年看作为人工制冷史的起点,当然在此之前,人类还是发挥了才智和技艺来利用天然冷量。在制冷史前史中可以分为旧石器时代和新石器时代。在旧石器时代里人类仅限于收集上帝赐予的天然冷量,而在新石器时代里人类则规划和发展了天然冷量的应用。从1755年起,我们进入了制冷原始史时期。当时人类已懂得制造低温并从中得益。1755年至1875年这120年中,由于先驱者的聪明才智诞生了首批制冷设备和机器,并得到了 Part I: History of Refrigeration before 1875 I. INTRODUCTION We can see 1755 as the starting point for the history of artificial refrigeration. Before then, mankind still had the talent and skill to make use of the natural cooling capacity. In the prehistory of refrigeration can be divided into Paleolithic and Neolithic. In Paleolithic times man was confined to collecting the natural cold given by God, whereas in the Neolithic age mankind had planned and developed its natural cold use. From 1755 onwards, we entered the primitive period of refrigeration. At that time, humans had learned to make and benefit from the cold. During the 120 years from 1755 to 1875, the first refrigeration equipment and machines were born and brought to the fore by the pioneers’ ingenuity