论文部分内容阅读
现在,人们对各种热设备多以热力学第一定律为依据做热量的收支平衡,做出热平衡表,求出设备的热效率,并用以探求节能的途径。但是,热量除数量的多少外,还有质量的高低,在能量转换时,“能”具有量的守恒性和质的贬值性这两种性质,只有将量和质结合起来,才能正确评价能的价值,近年来人们把“(火用)”或称之“有效能”的概念用于能量分析,它包含了能的量和质这两重含义,能帮助人们认识能的价值和能量转换的规律,对热力学、能源科学和工业节能等领域都有重要的意义。冶金工业是用能的大户,在冶金工业中,正确按(火用)的价值分配使用一次能源,合理地回收
Nowadays, people make thermal balance based on the first law of thermodynamics for various thermal devices, make a heat balance table, determine the thermal efficiency of the device, and use it to find ways to save energy. However, in addition to the amount of heat, there is also a level of quality. In energy conversion, “energy” has two properties: the conservation of quantity and the depreciation of quality. Only by combining quantity and quality can we correctly evaluate energy. In recent years, people have used the concept of “exergy” or “effective energy” for energy analysis. It contains the two meanings of quantity and quality of energy. It can help people understand the value and energy conversion of energy. The laws are of great significance to fields such as thermodynamics, energy science and industrial energy conservation. The metallurgical industry is a large household with energy use. In the metallurgical industry, the primary energy is allocated according to the value of exergy, and it is reasonably recycled.