Intelligent Capacitive Thermoelectric Converters with Dynamic Workload Management: Principle, Materials and Challenges

Mobile devices are now an all-pervasive technology. A typical cell phone gives off around 0.2 Watts of heat when idle, and closer to a Watt while making a call or running processor-intensive applications. The heat generated by a tablet or laptop is much higher. Almost all of this heat is never recovered.

In this paper, we will present the concept of a novel capacitive thermoelectric converter (CTEC) attached to a digital system/device with dynamic workload management. We will discuss our latest achievements in developing thin film materials with enormous temperature non-linearity that could be used to build such converters. Due to the CTEC’s small heat mass, it is possible to achieve a rapid heating-cooling cycle, hence, one can recover more wasted heat per unit of time. We will discuss the requirements imposed on the active materials and will compare them with our current results.

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