ETA Hochtemperatursystem - Development of a high temperature boiler and a high temperature cycle for energy supply for a electrical power production module

Currently no established or long-term proven CHP plants based on biomass combustion for the small-scale (to 10 kWel) are available. Within the project, such a system based on a new power generation module (5 kWel) should be developed. The module operates on the principle of a piston engine with n-pentane or n-hexane as working medium. The heat supply will be based on a pellet or wood chips furnace and a high temperature boiler (50 kWth). Either thermal oil or hot pressurised water will be used as heat transfer medium. To achieve a high electrical efficiency (expected to be 10% el referred to the boiler output) the development of a high temperature boiler is a major focus of the project. Special attention will be paid to a compact, small-volume design. The development of a high-temperature cycle for the thermal coupling with the electricity generation module represents a further objective of the project.