Publication

A mixed standard/custom design strategy to minimize cost and maximize efficiency for picohydro power potential harvesting

François Avellan, Elena Vagnoni, Loïc Andolfatto, Cécile Münch-Alligné
2015
Conference Papers

Abstract

Harvesting the numerous small scale hydroelectric potential is a way to increase the sustainable hydraulic energy production in developed countries. The condition to meet economical profitability with pico power stations - below 25 kW - is to minimize the required capital expenditure while maximizing the efficiency of the installed power stations. It requires developing dedicated technologies. This paper deals with the design of a standard counter rotating micro-turbine with custom runners to harvest picohydro potential on water utilities. The turbine's runners are tailored according to the characteristics of the installation site to maximize the efficiency. An automated tool path generation algorithm has been developed to cut the recurring costs usually associated with custom free-form components such as the runners.

Official source

https://infoscience.epfl.ch/entities/publication/c948a06c-2c6c-4156-acc8-413c40334168

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François Avellan, Elena Vagnoni, Loïc Andolfatto, Cécile Münch-Alligné
2015
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/c948a06c-2c6c-4156-acc8-413c40334168

About this result

Related concepts (32)

Developing country

A developing country is a sovereign state with a less developed industrial base and a lower Human Development Index (HDI) relative to other countries. However, this definition is not universally agreed upon. There is also no clear agreement on which countries fit this category. The terms low and middle-income country (LMIC) and newly emerging economy (NEE) are often used interchangeably but refers only to the economy of the countries.

Productive efficiency

In microeconomic theory, productive efficiency (or production efficiency) is a situation in which the economy or an economic system (e.g., bank, hospital, industry, country) operating within the constraints of current industrial technology cannot increase production of one good without sacrificing production of another good. In simple terms, the concept is illustrated on a production possibility frontier (PPF), where all points on the curve are points of productive efficiency.

Economic efficiency

In microeconomics, economic efficiency, depending on the context, is usually one of the following two related concepts: Allocative or Pareto efficiency: any changes made to assist one person would harm another. Productive efficiency: no additional output of one good can be obtained without decreasing the output of another good, and production proceeds at the lowest possible average total cost. These definitions are not equivalent: a market or other economic system may be allocatively but not productively efficient, or productively but not allocatively efficient.

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A mixed standard/custom design strategy to minimize cost and maximize efficiency for picohydro power potential harvesting

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