Currently, hydropower devices which generate less than 100 kW are known as microhydropower generators. The first device used to generate electricity from running water was the waterwheel in the Fox River, Wisconsin, in 1882. Microhydropower plants have been designed and studied in depth because of their advantages over traditional fossil fuels.

It reduces greenhouse gas emissions with minimal environmental impact.

This highly efficient hydropower is inexpensive to manufacture and maintain. It is widely known as a renewable energy source. Low-head hydropower develops hydroelectric power using low heads, usually less than 20 m high. Archimedean screw turbines (ASTs) are low-head hydropower generators suitable for industrial applications. Although there are many types of systems that can be used to generate green energy, sustainable infrastructures are needed to achieve sustainable development. Energy demand increases every year and generation of green energy is essential to country growth that minimizes environmental impacts. High energy consumption is one of the worries of our society. Finally, conclusions are drawn from this work that contribute to the improvement of AST technology as a sustainable facility to generate green energy.

A discussion comparing the results of this work and other results from the literature is presented. The numerical and experimental results are provided. Two experimental prototypes were developed and installed in the north of Spain. This hypothesis is numerically and experimentally studied. The new methodology for the design of ASTs is based on two considerations: the filling level of the AST buckets must be 85% and the increase of leakage losses must be minimized. Based on this analogy, a theoretical hypothesis on how to produce efficient ASTs is proposed. In this study, the performance of ASTs is analyzed using an analogy between ASTs and bucket elevators. However, there is a lack of knowledge about how to design them efficiently. They have been manufactured and installed worldwide. Archimedean screw turbines (ASTs) are used to generate hydroelectricity in low heads. Current energy demand and climate target plans are leading to green energy facilities which are efficient and sustainable.

Archimedes screw pump design manual