Overview of thermoelectric power generation industry

Overview of thermoelectric power generation industry
The use of natural temperature and industrial waste heat can be used for thermoelectric power generation, it can use the natural existence of non pollution energy, has good comprehensive social benefit. As early as 1965 years ago, the Soviet union began to study the use of the country's universal use of fuel lamp heat into electricity to drive the radio. In the Nordic location relatively remote areas, people developed a kind to be placed on the wood stove, the combustion heat release to generate electricity for small thermoelectric generator using the wood stove, night lighting electricity for local residents.
Thermoelectric technology research began in 1940s, reached its peak in 1960s, and successfully achieved long term power generation on spacecraft. At that time the United States Department of energy and space defense power system identification given office said, "thermoelectric power generation has been proved to be reliable, less maintenance, can work long time in power technology in extreme environment". In recent years, thermoelectric generator not only in the military and high-tech, but also in the civil aspects of a good application prospects.
A thermoelectric generator has the advantages of small size, light weight, no vibration, no noise advantages make it very suitable for small power is less than 5W, for a variety of sensors, unmanned surveillance tiny short-range communication device and medical and physiological research instruments - related products currently has entered the practical stage. Recently, Seebeck effect based on thermoelectric materials, scientists also developed many new thermoelectric sensors for low temperature measurement, single pixel infrared and X ray detection, hydrogen and other combustible gas leak detection.
Low grade heat, including industrial waste heat, waste heat of combustion, automobile exhaust pipe waste heat, solar heat, geothermal energy, ocean thermal energy, wide temperature range of heat source. The thermoelectric power generation technology can be used on a large scale to lower the heat, and the utility model has the advantages of simple structure, less maintenance and no pollution. Many experts believe that the thermoelectric generator using these thermal energy, the direct generation of low voltage and high current, such as hydrogen for electrolysis of water, is one of the best low peak energy storage.
But the former Soviet union in 1942 the first successful development of thermoelectric generator, the power generation efficiency is only 1.5% ~ 2%, the development efficiency of thermoelectric generator, are generally in 6% ~ 11%, which greatly limits its scope of application. In this case, through the development of research on thermoelectric materials and new materials, and continuously improve the thermoelectric properties for the heat source under the condition of constant increase power output has become the core of the study of thermoelectric power generation technology.
Overview of thermoelectric refrigeration industry
The thermoelectric refrigerator made of Parr effect has the advantages of small size, light weight, no mechanical rotation, no noise, no liquid or gaseous medium. Not only does not exist the problem of pollution of the environment, but also to achieve accurate temperature control, fast response, long service life. According to these characteristics, suitable for the production of various kinds of thermoelectric cooler and small thermostat, as well as for the requirements of special occasions, silent and no pollution. The main purposes are: 1) photomultiplier tube, infrared detector and semiconductor laser with semiconductor cooler, zero meter, dew point meter, standard frequency oscillator and electronic thermostat, oil pour point determination instrument etc.. 2) with the pathological sections of frozen Taiwan, cataract, skin disease, cooling cap cryoextractor. 3) portable hot and cold box, semiconductor refrigerator, semiconductor air conditioner, etc.. The refrigerant Freon disabled, provides a new opportunity for the development of semiconductor refrigeration capacity.