Eventos Anais de eventos
ENCIT 2016
16th Brazilian Congress of Thermal Sciences and Engineering
THERMAL MODELING OF THE COOLING SYSTEM OF AN ELECTRIC GENERATOR OF A HYDROELECTRIC POWER PLANT
Submission Author:
Celso Eduardo Tuna , SP , Brazil
Co-Authors:
PEDRO MAGALHÃES SOBRINHO SOBRINHO
Presenter: PEDRO MAGALHÃES SOBRINHO SOBRINHO
doi://10.26678/ABCM.ENCIT2016.CIT2016-0111
Abstract
This study presents an evaluation of the thermal cooling system of generators of a hydroelectric power plant located in Paraibuna, belonging to CESP. In the pursuit of energy efficiency and being the generator one of the main equipment of the plant, a study of its thermal conditions of cooling addressing was carried out, following the subsequent actions: measuring the flow of air in the heat exchangers; experimental measurements of thermal performance by varying the water flow in the cooling circuit; and thermal computational modeling of the generator. Applying the original design data, that was aimed to identify the cooling conditions, its limits, operational optimization of the generator and its cooling system. Through the results of modeling, it is possible to identify the distribution of calculated losses. In the search for greater energy efficiency, it is proposed and carried out actions that can generate energy savings, which mainly aim at: cooling water savings; reducing downtime for cleaning of heat exchangers; possible increase in power. The study by modeling confirms that the generator ventilation has 20% higher efficiency than the projected value. It is concluded that the methodology proposed in this study is feasible and applicable in hydroelectric power plants of small, medium and large sizes.
Keywords
Cooling system, Thermal modelling, cooling, generator, hydroeletric power plant, Cooling system, Thermal modelling, cooling, generator, hydroeletric power plant, Cooling system, Thermal modelling, cooling, generator, hydroeletric power plant
