To harvest waste heat from flue gas in the industry, this study develops an advanced simulation technology by integrating computational fluid dynamics (CFD) and a thermoelectric module (TEM) where the TEM is modeled as a heat sink to absorb waste heat from flue gases. The influences of Reynolds number, convection heat transfer coefficient at the cold surface, flue gas inlet temperature, dual TEM, and channel geometry on the performance of the TEM system are evaluated. The results clearly provide a measure in increasing the performance of TEM with rising the Reynolds number, flue gas inlet temperature, and convection heat transfer coefficient at the cold surface. In the dual TEM system, the performance of the leading TEM is very close to that of the single TEM, and the dual TEM can produce an additional 43 % power when compared with the single TEM. However, this also implies that the output power of the trailing TEM drops 57 % when compared to the leading one, stemming for its impact upon the downstream TEM. When the channel geometry is modified to raise the flue gas velocity at Re= 1,000, the output power and efficiency increase by 53.5 % and 25.2 %, respectively.

为了从行业中收集烟气中的废热，本研究通过集成计算流体力学（CFD）和热电模块（TEM）来开发一种先进的模拟技术，其中TEM被建模为散热器，以吸收烟气中的废热。评估了雷诺数，冷表面对流传热系数，烟气入口温度，双重TEM和通道几何形状对TEM系统性能的影响。结果清楚地提供了通过增加雷诺数，烟道进气温度和冷表面对流传热系数来提高TEM性能的措施。在双TEM系统中，领先的TEM的性能非常接近于单TEM，与双TEM相比，双TEM可以产生额外的43％的功率。但是，这也意味着尾部TEM的输出功率与前导TEM相比下降了57％，这是由于其对下游TEM的影响。当修改通道几何形状以提高Re = 1,000时的烟气速度时，输出功率和效率分别增加了53.5％和25.2％。