Solid particle erosion behaviour of metallic materials at room and elevated temperatures

Gas-side fouling, erosion and corrosion of heat exchangers for middle/low temperature waste heat utilization: A review on simulation and experiment

It is predicted that 60% of all new energy investments over the next 20 years will be in renewables The estimation for new hydropower production is 25% of all new renewables primarily due to potential in China, Africa, Latin America and South-East Asia Also in Europe a growth of hydropower production is aimed to achieve emission targets within the European Union by 2050 However, one of the main economic, technical and ecological challenges in future are the deposition, the treatment, and the disturbed dynamics of sediments in river catchments, which reduce the future market potential of hydropower substantially Due to a lack in awareness of those sedimentological challenges (eg lack of process understanding), various huge economical, technical and ecological problems emerge with an increasing relevance for hydropower industry, water management authorities and the society in future Based on a substantial literature review, (i) legal frameworks and (ii) reservoir management techniques including (iii) process understanding and numerical modelling are addressed in this article Moreover, the relevant cost-effective aspects of abrasion are worked out for (iv) turbine runners and (v) sediment bypass systems as well as the (vi) the ecological relevance of sediments and possible disturbances are described in this manuscript to open a future discussion on technical opportunities It was concluded, that all these issues should be addressed within the framework of the overall aim to minimize the costs under consideration of ecological requirements and standards by an improved sediment management in terms of hydropower use Moreover, it was stated that trans- and interdisciplinary research is required, to achieve those aims in future

State of the art, shortcomings and future challenges for a sustainable sediment management in hydropower: A review

An analysis of the erosion-oxidation interaction mechanisms

Publisher Summary
Wear by abrasion and erosion are forms of wear caused by contact between a particle and a solid material. Cavitation is caused by the localized impact of fluid against a surface during the collapse of bubbles. Although all three forms of wear share some common features, there are also some fundamental differences, for example, a particle of liquid can cause erosion but cannot abrade. The fundamental mechanisms involved in these three forms of wear and the protective measures that can be taken against them are discussed in this chapter. The three basic forms of particle-surface interaction—abrasion, erosion, and cavitation—are shown to consist of many specific wear mechanisms. Some wear mechanisms may occur in more than one form of particle-surface interaction. Abrasive and erosive wear in particular were initially thought to consist of one or two relatively simple mechanisms but it is now realized that many processes are involved and some of them are not yet well understood. Abrasive, erosive, and cavitation wear are particularly amenable to control by careful materials selection and many wear-resistant materials have been developed for this purpose.

H. Fujikawa

Papers

Particle erosion behaviour of boiler tube materials at elevated temperature