Mantenimiento mejorativo de un intercambiador de calor perteneciente a la Empresa COPROBICH

Abstract

In this work, the improving maintenance of the heat-exchanger belonging to the company “COPROBICH” was carried out. For the development of this work, the description of the current operating context of the exchanger used for drying quinoa was prepared considering the physical variables of: air flow, speed and temperature. The fuel consumption was then measured before performing the heat-exchanger improving maintenance, these measurements yielded the result of 4.51 gallons of diesel per 8 quintals of dried quinoa, this known as “parada”, the heating system before the corrective had heat losses of 11639,865 watts on the walls of the exchanger, which was found without thermal insulation. Once these patrameters Q, V, T, and ΔQ were determined, the improving maintenance of the exchanger was carried out, selecting mineral rock wool as thermal insulation due to its excellent properties such as: its high thermal resistance and 100% incombustibility, 10 stainless steel panels were built with 84 cm long x 150 cm high x 5 cm thick, the same that were installed on the walls of the exchanger. Once the improving maintenance work was completed, the functioning tests of the quinoa drying system were performed, where it was possible to verify by means of thermography that there are less heat losses (4032.285 watts) in the walls, the risk of burns of the operations personnel of the plant was also reduced, and the thermal efficiency was improved by lowering the drying time from 50 min to 45 min as well as the fuel consumption (4.06 gallons per “parada”).