• RAPAKA JAGADEESH
• Pisini Raminaidu

Steppped short tube orifice has been proposed as an extension to the expansion device in the domestic refrigerator working on R-290. In this present work mainly focused on stepped short tube orifice and its efffects on system parameters like net refrigeration effect, compressor work, pull down time and coeffcient of performance. A stepped short tube orifice is consisting of two serrial connected short tube orifices with different diameters. It is employed to the refrigeration system as extension to the capillary tube. In this experiment stepped short tube orifice is manufactured and fabricated to the domestic refrigerator. Experiments has to be conducted on the domestic refrigerator with stepped short tube orifice, refrigerant R-290, and .5%wt SiO2 nanoparticle. After all the experiments the effects of the stepped short tube orifice on the domestic refrigerator has investigated with help of comparison charts. The results may show that the performance of the domestic refrigerator with incorporation of stepped short tube orifice and inclusion of SiO2 nano particle improved than the domestic refrigerator without stepped short tube orifice.

"EXPERIMENTAL ANALYSIS OF STEPPED SHORT TUBE ORIFICE AS EXTENSION TO THE CAPILLARY TUBE IN DOMESTIC REFRIGERATOR BY USING R-290 REFRIGERANT WITH SiO2 NANO LUBRICANT", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.9, Issue 12, page no.f599-f604, December-2022, Available :http://www.jetir.org/papers/JETIR2212576.pdf

"EXPERIMENTAL ANALYSIS OF STEPPED SHORT TUBE ORIFICE AS EXTENSION TO THE CAPILLARY TUBE IN DOMESTIC REFRIGERATOR BY USING R-290 REFRIGERANT WITH SiO2 NANO LUBRICANT", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.9, Issue 12, page no. ppf599-f604, December-2022, Available at : http://www.jetir.org/papers/JETIR2212576.pdf