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Contenido archivado el 2022-12-27

INTEGRATED SYSTEM OF COGENERATION AND ENERGY SAVING IN THE CERAMIC INDUSTRY

Objetivo

The project has been applied to a ceramic tile factory where two emergency generators of electricity always exist for technical reasons. The proposed system utilizes existing emergency generators to produce electricity required by the systems operating on discontinuous cycles and to exploit thermal energy of gaseous emissions of the engines to obtain an emergency saving for the dryers. The supply of electricity in emergency situations will be guaranteed. In addition, an optimization of electricity use will be achieved by reduction of losses due to the phase-displacement. The innovation lies in the economic advantage achieved from the use of emergency generators through cogeneration and an improved use of energy.
The project is designed to study the rationalization of the use of energy sources in a ceramic factory.
The following values for the various elements are obtained :
- electrical energy savings 1.096 GWh/year
- production of electrical energy 1.272 GWh/year
- production of thermal energy 191.974 TEP/year
- consumption per energy produced 349.633 TEP/year
The proposed systems involves the use of several means of optimizing energy consumption and, in particular, as applied to the ceramic floor and wall tile industry through the use of the following operations :
a) cogeneration with an internal combustion engines running on dual fuel (80 % of methane and 20 % of gasoline) and operating electricity generators. Equipments exist in the ceramic industry (energy systems and the firing kilns with their respective accessories) which must not be subjected to unexpected interruptions in the power supply. Such an interruption would cause unrepairable damage to the material in the kilns at that moment. At present , to avoid such risks, emergency generators are installed which automatically take-over when there is a power failure. The system proposed here utilizes existing emergency generators to produce the electrical energy required by the systems operating on discontinuous cycles (for example driers and/or grinding equipment) in order to recover the used capital represented by the emergency generators themselves, which are rarely used for more than a few hours each year, and to exploit a large part of the thermal energy generated by the gaseous emissions from the engines to obtain an energy saving for the driers. This intervention requires the realization of a primary line for the use of electrical energy that does not interfere with the main line, which must always be able to be switched over in cases of emergency;
b) power factor correction which achieves optimum use of electrical energy by the reduction of losses caused by existing differences in phase between voltage and current in three-phase systems. The solution to this problem is achieved by making parallels connections between elements equipped with a reactive component (one which does not do work, but which is necessary to excite the energy circuits) and other elements with reactive components of the opposite sign. To obtain maximum technical-economic efficiency, it is necessary to put the condensors in parallel with the electrical elements concerned. This intervention (modification) has been realized "motor by motor", i.e. correction of power factor at the level of input to each individual motor.

Convocatoria de propuestas

Data not available

Régimen de financiación

DEM - Demonstration contracts

Coordinador

P.M. ELETTRO DI PAGLIERANI PAOLO
Aportación de la UE
Sin datos
Dirección
VIA C. PAVESE 21
47041 BELLARIA (FO)
Italia

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Coste total
Sin datos