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Content archived on 2022-12-27

USE OF AN AXIAL FLOW, PROPELLER TURBINE OF SIMPLIFIED CONSTRUCTION FORMICRO-HYDRO ELECTRIC GENERATION

Objective

To construct, install and test a range of standardised, axial flow, tubular PROPELLER turbines of simplified construction. The design has been standardised in order to obtain an economic scale of design, construction and installation whilst maintaining high efficiency.
Three plants have been realized generally respecting the technical characteristics foreseen during the project. Having the conditions of nominal head stage, the development power is the same above mentioned. In the periods of working the output energy is included between 52 and 56% of the theoretic maximum value.
The working has been influenced by the great lack of water in the last years.
Originally two sites were proposed for this project, however neither could be obtained and the project is now based on three new sites, each of which has different hydraulic conditions, in order to demonstrate the application of the equipment across the full range. The details of the sites are :
Plant 1 Plant 2 Plant 3
Site name Caserta Brescia Perugia
Head (M) 4.00 2. 35 8.00
Flow (M3/s) 1.20 0.38 - 0.32 0.15 - 0.18
Generator output (KW) 37.0 5.7 - 4.5 9.0 - 7.0
Turbine speed (rev/min) 480 575/383 1524/2326
Generator speed (rev/min) 1500 1500/1000 1500
Generator type Asynchronous Asynchronous Synchronous
Mode of operation Grid Grid Isolated
The turbine design has been standardised to produce a range of 8 different runner diameters, each with 2 alternative (fixed)blade settings. As the guide vanes are also fixed, the turbines is simple to manufacture and to control, and is very cost effective.
The electricity generated by the plants is used in the following ways :
Plant 1 - Sold to the local supply authority used by a private residence
Plant 2 - Sold to the local supply authority used by a private residence
Plant 3 - Used by a private residence.

Topic(s)

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Call for proposal

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Coordinator

SOCIETA OFFICINE MECCANICHE SPA (SOM)
EU contribution
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Address
VIA PRATI VECCHI 37
42025 Cavriago
Italy

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Total cost
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