Construcción de un módulo didáctico de carga y descarga de refrigerante natural para un sistema de refrigeración por compresión : Implementación del módulo didáctico para carga y descarga de refrigerantes naturales.

Abstract

The objective of this project was to implement a didactic module for charging and discharging natural refrigerant (propane) in a compression refrigeration system. A refrigeration module was used to meet this objective what was there in the Industrial Technology Laboratory of the Technical Training School. It began with a change of pipes and components of the refrigeration module, then performed the procedures prior to charging the refrigerant (R134A and R290), such as cleaning the pipes internally (sweeping with nitrogen), search for leaks (pressurization with nitrogen), the extracts moisture and air from the system (vacuum test). Once these procedures were performed, it began to load R134A, and the working pressures were checked along with the compressor amperage, likewise, the approximate amount of refrigerant that entered the system was verified by electronic scale. Then the refrigerant R134A was recuperated into recovery tank for not discharge it in the atmosphere. The vacuum test was performed again to then charge the system with R290, also took the working pressures to verify that the system worked, the amperage of the compressor, and the amount of refrigerant entering. For the discharge of the system was performed by venting, the refrigerant discharged was ventilated to the atmosphere following recommendations for hydrocarbon management.