ANALISIS PENINGKATAN KINERJA POMPA VAKUM RADIAL PADA TABUNG VORTEX BERTEKANAN RENDAH

• Main Authors: , IKA SETYANINGSIH, , Ir. Kutut Suryopratomo M.T.,M.Sc
• Format: Theses and Dissertations NonPeerReviewed
• Published: [Yogyakarta] : Universitas Gadjah Mada 2014
• Subjects: ETD
• Online Access: https://repository.ugm.ac.id/132398/; http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=72931
• Institution: Universitas Gadjah Mada

Vortex tube is a device that can generate an output of cold air and hot air from a pressurized fluid input. The output of cold air from the vortex tube can be used as a cooling fluid (refrigeration) that uses an air as refrigerant. It is a solution to ozone depletion caused by refrigeration technology that uses freon as a refrigerant. This study aims to design a vacuum pump which can be integrated with a vortex tube so that the vortex tube does not need to be injected with pressurized air. Vacuum pump which can be integrated with a vortex tube is a vacuum pump with a pressure of 0.3 atm vacuum. This study used velocity triangle method for selecting pump design parameters and point by point method to determine the curvature of the blade. In this study, also conducted experiments manufacture of pumps and pump testing to compare the prototype with the theoretical design. Furthermore, flow visualization conducted to determine the pump flow prediction. Selected design parameters produces vacuum pressure 0.957 atm, the relative difference between the theoretical design of the experiment worth 43% ± 1.5%. The method used for flow visualization is the smoke method, the results showed that the flow blade design is not optimal, because it is only at the ends of the outer and inner diameter of the impeller are traversed by a stream.