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随着国家工业、矿业、交通运输事业等企业经济管理制度的日臻完善,废热或余热回收利用问题也愈来愈多地为人们所注意。这个问题既是一个技术问题,也是一个经济问题。说它是技术问题,是因为要取得预想的废热回收利用效果,就要解决回收系统和设备的设计和安装等一系列工程技术问题。说它是经济问题,人们也许会首先想到余热回收在节约燃料消耗、降低产品成本、增加企业盈利等方面所能提供的经济效果。当然,这些都是十分正确的。但是不能把问题局限于上述几个方面,还应从工程的技术经济上去论证。
As the national economic, industrial, mining, transportation, and other corporate economic management systems continue to improve, waste heat or waste heat recovery and utilization issues have become more and more attention. This issue is both a technical issue and an economic issue. It is a technical problem because it is necessary to solve a series of engineering and technical problems such as the design and installation of recycling systems and equipment in order to achieve the expected recycling effect of waste heat. To say that it is an economic issue, people may first think of the economic effects that waste heat recovery can provide in terms of saving fuel consumption, reducing product costs, and increasing corporate profits. Of course, these are all very correct. However, the problem cannot be confined to the above-mentioned aspects. It should also be demonstrated from the technical and economic aspects of the project.