Rifaldi, Riyan (2022) Pengaruh Ukuran Pipa Kapiler Terhadap Performance Alat Refrigerasi. Other thesis, Fakultas Teknik Mesin.

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Abstract

Refrigeration technology is currently affecting the life of the modern world, not only to improve the quality and comfort of life, but also to touch the essential values of supporting human life. Based on the description above, it is necessary to do research on“Effect of Capillary Pipe Size on Refrigeration Equipment Performance” The expansion device functions to expand the liquid refrigerant according to the cooling load that can be served by the evaporator. At a certain length and diameter, the capillary tube has a sufficiently high frictional resistance so that it can reduce the high condensing pressure to a low evaporating pressure. The capillary pipe functions to determine the amount of liquid refrigerant to the evaporator and to maintain a constant pressure difference between condensation pressure and evaporation pressure. The purpose of this study was to determine the effect of capillary pipe changes on energy efficiency and refrigeration performance, to calculate cap illary pipe changes that have the best refrigeration performance, to determine the effect of capillary pipe changes on the evaporator and condenser. In this study there are several processes that will start with cutting the material, providing capillary pipe connections and thermostatic expansion valves, until data collection. The method used in this research is literature study followed by data collection, discussion, and finally draws conclusions. The results of this study are that the size of the diameter of the capillary pipe greatly influences the performance of the refrigeration system. Based on the calculation results of the performance of the refrigeration system between the 3 different capillary pipe sizes. the most stable is found in the capillary tube size of 0.042 inches. Where the efficiency value increases up to 84%, the lowest compressor work value with a value of 15 (kJ/kg), the lowest condenser waste heat with a value of 177 (kJ/kg), the highest heat absorbed by the evaporator with a value of 166 (kJ/kg), mass flow rate with a value of 0.00997 (kg/s), the highest with a value of 11.06, 7.025, then at a capillary pipe size of 0.052 it has the lowest efficiency of 29.7%. This affects the working capacity of the compressor.

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