Optimaizing nozzle position on an evaporator of absorbtion system cooling machine

Abstract

This study examines the refrigerant jet spraying system that has been mounted on the absorption system cooling machine and is optimized using a CFD (Computer Fluid Dynamic). The study was conducted on an absorption system cooling machine that had been built using an arbsorber system in the form of a LiBr-H2O solution. As an efrigerant, water circulated in the tube bundle is used. Refrigran spray patterns greatly affect the performance of the cooling machine. The more evenly distributed refrigran beam in the space between the tube bundle lattice, the more effective the process of water cooling in the tube. The adjustment of the position of the nozzles and the evaporator grille is very influential in this refrigeration cycle. From the results of the initial conditions simulation of the placement of the nozzles with the arrangement of the tube bundle that there is fluid flow in the space between the lattice is not spread evenly. After being modified using the CFD software, an effective formation of tube bundle arrangement, evaporator lattice, and nozzle position is expected so that the refrigeration cycle is expected to go well.