Energy Conversion and Management, Vol.99, 326-333, 2015
Solar thermoelectric generator performance relative to air speed
The electrical characteristics of a solar thermoelectric generator (STEC) are measured. The STEG device is novel in that it requires no external pumps such as a water refrigeration unit to maintain a thermal differential. The heat source is simulated solar radiation heating a double walled evacuated tube. The heat sink is a CPU cooler subjected to simulated wind energy. The peak power performance of the STEG for a fixed heat input and a varying forced convection brought upon by the artificial wind is reported. The STEG's thermoelectric power output under naturally occurring solar and wind energy is also reported. A discussion on the thermoelectric effect presents experimental results showing the effect of varying the circuit's load resistance on a Bi2Te3 module's electromotive force, electrical resistance, and thermal resistivity. (C) 2015 Elsevier Ltd. All rights reserved.
Keywords:Thermoelectric characteristics;Solar thermoelectric generator;STEG;Solar evacuated tube;Thermoelectric module;Peak power