Power generation from waste heat in a food processing application
Power generation from waste heat in a food processing application
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DOI：
10.1016/j.applthermaleng.2011.12.023
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发表时间：
2012-04-01
影响因子：
6.4
通讯作者：
Masheiti, Salah
中科院分区：
文献类型：
--
作者：
Aneke, Mathew;Agnew, Brian;Masheiti, Salah
在本文中，回收废热的油炸部分和废气流发送到一个典型的薯片或薯片制造厂的堆栈和使用的热量来驱动有机朗肯循环（ORC）系统发电的潜力已经提出。考虑了五种不同的ORC系统选项（A、B、C、D和E）。前两个方案（A和B）分别利用来自恶臭气体和排气的废热到烟囱，每个方案使用单个ORC系统发电，而第三个方案（备选案文C）利用新颖的双热源单ORC系统，其中来自污浊气体的低温废热用于提供预热，来自排气的高温废热用于提供蒸发选项D还示出了双热源ORC系统，其中到排气烟囱的高温废热用于提供预热，而较低温度的污浊气体用于蒸发（在废热使用方面与选项C相反），而选项E利用再热循环，其中来自污浊气体的废热用于提供离开涡轮机的工作流体的再热。在余热利用方面，方案A和B的组合可以与方案C、D和E进行比较。模拟结果表明，在净发电量、冷却水需求和工质（R245 fa）需求方面，方案A和B的组合给出了最佳的发电结果，这与方案C产生的结果相似。选项C之后是选项E，其结果优于选项D。熵产分析表明，熵产与功率输出成反比，本文所采用的ORC配置（方案C）的净发电量满足薯片生产过程的平均日功率需求，也满足日峰值功率需求的98.58%。(C)2011爱思唯尔有限公司保留所有权利。
In this paper, the potential of recovering waste heat from the fryer section and exhaust stream sent to the stack of a typical potato crisps or chips manufacturing plant and using the heat to drive an Organic Rankine Cycle (ORC) system for power generation has been presented. Five different ORC system Options (A, B, C, D and E) were considered. The first two options (A and B) make use of the waste heat from the foul gas and exhaust to stack respectively for power generation using a single ORC system each while the third option (option C) makes use of a novel dual heat source single ORC system where the low temperature waste heat from the foul gas is used to provide preheating and the high temperature waste from the exhaust to the stack used to provide the evaporation. Option D also shows a dual heat source ORC system where the high temperature waste heat to the exhaust stack is used to provide the preheating while the lower temperature foul gas is used for the evaporation (reverse of option C in terms of waste heat usage) while option E makes use of a reheat cycle where the waste heat from the foul gas is used to provide the reheating of the working fluid exiting the turbine. In terms of waste heat usage, the combination of options A and B can be compared with options C, D and E.The simulation result shows that in terms of net power generation, cooling water requirement, and working fluid (R245fa) requirement, the combination of Options A and B gives the best power generation result and this is similar as the result produced by Option C. Following option C is option E which gave a better result than option D. The entropy generation analysis showed that the entropy generation is inversely proportional to the power output.It was also observed that the net power generation for the ORC configuration adopted in this paper (option C) meets the average daily power requirement of the crisps manufacturing process as well as 98.58% of the daily peak power requirement. (C) 2011 Elsevier Ltd. All rights reserved.