Avaliação técnica e financeira de um sistema para reaproveitamento energético da água de renovação dos resfriadores de carcaça de um frigorífico avícola

Abstract

The present work consists of the study on the possibility to obtain energy gains and, consequently, financial return through the resizing of a system composed of heat exchangers and centrifugal pumps, able to take advantage of the difference of thermal energy present between water of discard of the chillers and drinking water supplied by a poultry slaughterhouse. In order to determine the adequacy requirements, the operating conditions in which the current system is presented and compared with the design conditions of each of the equipment that compose it. Subsequently, the hypothesis of improvement was raised and it was verified that it met the conditions imposed on the project in a more efficient way, through the Method of effectiveness- NUT. It was concluded that, in order for the system to be fully operational again, there would be a need to increase the area of thermal exchange of the heat exchangers of corrugated plates, as well as to associate them in a new way, for a new arrangement of passes. Regarding the pumping system, the study demonstrated that it would be necessary to replace the centrifugal pumps so that the wastewater was transported along the entire route. Finally, the necessary costs for the implementation of the technical improvement actions, as well as the financial capture associated with the saving of electricity, were raised. In the face of such information, the investment analysis was carried out, where the project proved to be promising and feasible both technically and economically.