Abstract
There is an urgent need to improve the lifestyle and efficiency of industrial energy use to solve energy and environmental problems, now approaching critical level. New thermoelectric oxides possessing high durability at high temperature and high safety were discovered and a prototype of small-sized cogeneration systems working at the temperature range between 773K and 1173 K was developed in collaboration with a private company. Thermoelectric modules composed of oxide devices, which have pipe-type shapes, were constructed using Ag electrodes, paste and stainless steel pipes. Water flowed inside the stainless steel pipe for cooling. Power generation experiment was carried out. The module generated electric power of 0.27 W and hyper heated steam simultaneously by inserting the module into a water boiler of natural gas combustion type.
