Wyniki wyszukiwania - BazTech

Ograniczanie wyników

2 Mechanics and Mechanical Engineering

2 2018

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

Location-optimized aerodynamic rotor design of small wind turbines and lightweight implementation using additive hybrid material

Lehser-Pfeffermann D., Häfele T., Rückert F. U., Griebsch J., Müller T., Joos F.

Mechanics and Mechanical Engineering

2018

Vol. 22, nr 2

437--445

Wind power plays a crucial role in supplying cities with renewable energy. Combined with short transport routes, it is essential to establish site-specific small wind turbines in the urban environment. An increasing interest in small, decentralized, vertical-axis wind turbines (VAWT) can be observed here. However, concepts with low visual and auditory effects and economic efficiencies are largely limited. The project part described in this paper enables a specially developed design software tool of rotor geometries optimized for such boundary conditions. By using fiber-reinforced structures in combination with selective laser sintering, it is theoretically possible to economically produce even the smallest quantities of these geometries for a typical service life of wind turbines. The results presented and discussed in this work can serve as a basis for a subsequent feasibility study.

A software tool for automatic geometry generation of a micro turbine

Hoffmann S. P., Rückert F. U., Theis D., Ruffino A. G., Lehser-Pfeffermann D., Hübner D.

Mechanics and Mechanical Engineering

2018

Vol. 22, nr 2

465--478

Heat recovery plays an important role in increasing the efficiency of renewable energy facilities like biomass furnaces, solar power plants or biofuel combustion engines. As the overall efficiency of the facilities can be increased by recovering the energy. The available waste heat can be converted directly into mechanical energy, pressure or subsequently converted into electrical energy by coupling the expansions machine with a generator. The waste heat can be converted by Organic Rankine Cycle (ORC). Therefore, an expansion machine, e.g. a turbine is required. Also small amounts of waste heat can be recovered, if so-called micro turbines are used. Design and construction of such micro turbines always follow fixed rules. Aim of this work is to explain the rules how to design a micro turbine. Furthermore, our workflow and a software tool which follows these rules should be presented.