The aim of the work is the development of the algorithm for the working parameters calculation of a marine waste heat thermoelectric generator, where the thermoelectric layer properties are considered as temperature dependent. The marine thermoelectric generator must have an extensive operational profile that includes a number of modes with a different power demand and different magnitudes of the waste heat parameters. The working mode alteration involves the change in the thermoelectric properties. To achieve the goal a mathematical model was offered for a load diagram calculation. The load diagram represents the generator parameters alteration with respect to the load current change. The most important result was the proposed new order of calculation that differs from the present models with offered variables, an approach to constructional thermal resistances application and a specific electrical power implementation. Mean temperature and load factor are taken as variables with the load factor being accepted as a relation between the electrical resistances of a load and a generator. Constructional thermal resistances were combined into two complex parameters – the thermal resistances of a hot and cold sides. The significance of the obtained results is determined by shaping a versatile approach to the generator`s working parameters calculation. The methodology is independent of the scheme of the calculated generator`s thermal resistances, which could be transformed into the complex parameters. The specific power calculation allows defining the performance per a cross-sectional unit area. The optimal selection of variables reduces the computational time.
The paper presents the study of thermoelectric properties of bismuth tellurides obtained by the method of electrochemical deposition. Measurements of electrical conductivity and the Seebeck coefficient were carried out on a NETZCH SBA 458 Nemesis® measuring installation. Based on the obtained measurements, the following conclusions were made: for samples synthesized by the method of continuous electrochemical deposition, the maximum value of the Seebeck coefficient reached α = 14 μV / K, while for samples obtained by the pulse method α = 47 μV / K. It was also noted that after annealing, the samples showed an increase in the Seebeck coefficient up to 1.5 times. As a result of analyzing the measured thermoelectric characteristics, it was concluded that the method of pulsed electrochemical deposition is more efficient for obtaining high-quality thermoelectric materials.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.