一、引言尽管近二十年来对制冷设备的基本性能知识有很大进展,但对它们的设计方法仍停留保守不变的地位。主要有二个因素造成。第一,在设备设计中过份强调无法验证的经验,把经验作为规范,这样造成工程师们为了方便不肯改变成规的固有设计方法。第二,是由于近代应用科学研究成果,常常不能或不完全可能用于制冷设备设计的改进。因此,沟通科研和设计间距离,用先进合理方法设计制冷设备是十分必要的。另一个重要理由必须重新思考在设计制冷设备原理中,是由于能源价格高涨带来的影 I. INTRODUCTION Although considerable progress has been made in the basic performance knowledge of refrigeration equipment in the past two decades, their design methods have remained conservative. There are two main factors. First, placing too much emphasis on unverifiable experience in equipment design and using experience as a yardstick has created an inherently engineered way for engineers to refuse to change their rules. Second, due to the recent achievements in applied scientific research, it is often impossible or impossible to improve the design of refrigeration equipment. Therefore, it is necessary to design the refrigeration equipment with advanced and reasonable methods to communicate the distance between scientific research and design. Another important reason must be reconsidered in the design of refrigeration equipment, the principle is due to the impact of high energy prices