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余能是在一定经济技术条件下,在能源利用设备中没有被利用的能源,也就是多余、废弃的能源。它包括高温废气余热、冷却介质余热、废汽废水余热、高温产品和炉渣余热、化学反应余热、可燃废气废液和废料余热以及高压流体余压等7种。其中最主要的是余热。根据调查,各行业的余热总资源约占其燃料消耗总量的17%～67%,可回收利用的余热资源约为余热总资源的60%。一、余热的回收利用余热的利用途径很多。一般说来,综合利用余热最好;其次是直接利用;第三是间接利用(产生蒸汽、热水和热空气)。余热蒸汽的合理利用顺序是:1、动力供热联合使用;2、发电供热联合使用;
I can be under certain economic and technological conditions, the energy utilization equipment in the unused energy, that is, redundant, abandoned energy. It includes 7 kinds of waste heat of high temperature waste gas, waste heat of cooling medium, waste heat of waste steam waste water, residual heat of high temperature products and slag, residual heat of chemical reaction, waste heat of combustible waste gas and waste, and residual pressure of high pressure fluid. One of the most important is waste heat. According to the survey, the total waste heat in various industries accounts for about 17% to 67% of the total fuel consumption, and the waste heat recovery and utilization resources account for about 60% of the total waste heat resources. First, the waste heat recycling Waste heat utilization a lot of ways. In general, the best use of comprehensive utilization of waste heat; followed by the direct use; the third is the indirect use (to produce steam, hot water and hot air). The rational use of waste heat steam in the order: 1, the combined use of power heating; 2, combined use of power generation and heating;