论文部分内容阅读
及其在节能技术中的作用(火用)是近二十年来热力学领域中出现的新的研究课题之一。它对节能有重大的意义和作用,愈来愈为人们广泛关注并着力研究。目前节能工作中广泛采用的热平衡,只能确定能量在数量上的利用率,即只能从量上分析能量在各个热工环节上的消耗情况,从而确定效果和主攻方向。这种方法忽略了能量在“质”上的差异,因而是不科学的。因为数量相同而形态不同的能量,其作功的能力是不相同的。因此,若只从数量上反映能量的消耗情况,而不反映质量上的损失情况是十分片面的,是不能真正反映节能的方向和
and its role in energy-saving technology (exergy) is one of the new research topics emerging in the field of thermodynamics in recent twenty years. It has great significance and effect on energy saving, and has drawn more and more people’s attention and research. At present, the widely used heat balance in energy conservation work can only determine the utilization of energy in quantity, that is, the energy consumption in each thermal link can only be analyzed quantitatively to determine the effect and the main direction of attack. This method ignores the “qualitative” differences in energy and is therefore unscientific. Because the same number of different forms of energy, their ability to work is not the same. Therefore, if we only reflect the energy consumption in terms of quantity and do not reflect the quality loss, we can not really reflect the direction of energy saving.