• Chakravarty, P.
• Atekov, Parahat
• Chelladorai, Prabhu
• Balakrishnan, Navaneetha Krishnan
• Naresh, G.
• Kashyap, A.

Abstract

<jats:p>&lt;div class="section abstract"&gt;&lt;div class="htmlview paragraph"&gt;Much of the thermal energy derived from combustion of fuel is lost throughexhaust gases. By effectively recovering waste heat energy in the form ofelectricity, it can be used to recharge batteries or power auxiliary systemsthus improving both performance and fuel economy. In this work, the use ofthermoelectric generators (TEG) for energy recovery were studied using bothcomputational and experimental strategies. The efficiency of TEG(Ƞ&lt;sub&gt;TEG&lt;/sub&gt;) was analyzed through computational methods by changingtemperature gradients, Seebeck coefficient (α), and dimensions of the P- andN-type plates individually. The results of computational analysis showed that incomparison to vertical and planar configuration, mixed-type thermocoupledelivered 83.3% and 96% more power, respectively. Raising the α, enhanced theȠ&lt;sub&gt;TEG&lt;/sub&gt; by 57% and lowering α affected the Ƞ&lt;sub&gt;TEG&lt;/sub&gt; by 9.5%for mixed thermocouples. A marginal development in the Ƞ&lt;sub&gt;TEG&lt;/sub&gt; wasachieved by increasing the length of the P- and N-type semiconductors butdecreasing the length improved Ƞ&lt;sub&gt;TEG&lt;/sub&gt; by more than 95%. In theexperimental approach, the Ƞ&lt;sub&gt;TEG&lt;/sub&gt; of a Peltier module-based TEG wasstudied under static and dynamic testing conditions on a motorcycle byconnecting more than one module in series and parallel, respectively. Theaverage power generated over a range of engine speeds was 10.9 W and 10.6 W forseries and parallel configurations, respectively, under static test conditions.The average power obtained with dynamic tests was 10.5 W and 12.2 W for seriesand parallel configurations, respectively.&lt;/div&gt;&lt;/div&gt;</jats:p>

Topics

• impedance spectroscopy
• combustion
• n-type semiconductor