Analysis Of The Influence Of Thermoelectric Parameters Under Low Temperature Heat Source

In today’s society, all countries have committed to pursuing high efficiency andnon-polluting methods for secondary use of energy and energy recovery and utilization tosolve the energy problem, while alleviating environmental problems. Thermoelectricpower generation technology directly changes heat energy into electricity. It lets peoplesee its great potential in the areas of remaining and waste heat recycling and utilizationby its many advantages. In order to apply this technology better to industrial andcommercial areas, for thermoelectric power generation technology, both theoretical andexperimental research have been done in the paper.This thesis focuses on the application of thermoelectric power generationtechnology; the research analysis has been done from theoretical. The thesis is based onthe thermoelectric effect, starting with the theory of thermoelectric power generationprocess, taking the inevitable factors, which contain contact resistance, thermal resistanceand ceramic tablets, in the actual work process into account the model analysis, then itestablishes the actual thermoelectric generators thermoelectric coupling model. On thebasis of this model, it is derived for the relationship between the actualprocess performance parameters and other parameters, and the correlation is obtained.Then for the related parameters obtained from correlation in the actual model, the papernumerical analysis the performance parameters of thermoelectric power generation byseparate changing different parameters. The conversion case of the resistance, loadresistance, the thermal conductivity of hot and cold end, thermal conductivity ofthermoelectric materials, hot and cold end temperature and the Seebeck coefficient to theoutput power and efficiency of thermoelectric can be got.This thesis focuses on the application of thermoelectric power generationtechnology; a test has been done from experiments. A thermoelectric power generation properties of thermoelectric modules experimental test platform has been built up, tostudy the impact of the temperature difference between the hot and cold side, resistanceof the load circuit to the power components work performance. Open-circuit voltage of asingle thermoelectric power generation modules, the variation of which changes with thetemperature of the hot and cold ends and the variation of power output with loadresistance under three different conditions are tested. Power of a single module isobtained in actual circumstances.In this thesis through the study of thermoelectric power generation, close to theactual situation, we get the correlations of thermoelectric power generation performanceparameters and the size of the impact in theory, which is each of the parameter incorrelation to the thermoelectric power generating performance. It directs theoptimization of thermoelectric properties in the actual circumstances. And it also hassome significance for the research and application of thermoelectric modules.