本文提出了一种基于有机朗肯循环的铝电解槽侧壁余热发电系统并开展了工业试验.试验结果表明:随着导热油流量的增加,出口油温下降、系统换热量增加.导热油流量543 L/h时,换热量达到最大值22 kW;当导热油温度一定时,随着蒸发压力的增大,循环热效率、净功输出和效率均增大;系统的电功输出、效率随着过热度的增大略有减小;当热源温度为165℃、蒸发压力在1.3 MPa时,热效率和输出功率达到最大值,11.2％和2 200 W.
Experiment study on power generation of waste heat recovery from aluminum reduction cell's side walls based on Organic Rankine Cycle
A waste heat power generation system on the side wall of the aluminum reduction cell based on Organic Rankine Cycle(ORC)is proposed in this paper,with industrial test carried out as well.The results of industrial test show that with the increase of heat transfer oil flow rate,the oil temperature decreases at the outlet and the heat exchange of the system increases.When the flow rate of heat transfer oil is 543 L/h,the heat exchange reaches the maximum value of 22 kW.When the heat transfer oil temperature is predetermined,along with the increase of evaporation pressure,the cycle thermal effi-ciency,net output power and exergy efficiency all increase.The output power and exergy efficiency of the system decrease slightly with the increase of the overheat.When the heat source temperature is 165℃ and the evaporation pressure is 1.3 MPa,the cycle thermal efficiency and the output power reach the maximum of 1.2％and 2 200 W,respectively.
万方数据
维普
