Numerical Investigation of Parameters Affecting Discharge Line Pressure Pulsations in Hermetic Reciprocating Compressors

International Conference on Compressors and their Systems 2019

Yesilaydin, I.^1 ; Erbay, L.B.^2

Arcelik A.S. Compressor RandD Center, Arcelik A.S. Compressor Plant, OSB, 1. Cadde, Eskisehir, Turkey^1

Department of Mechanical Engineering, Eskisehir Osmangazi University, Bati Meselik 26480, Eskisehir, Turkey^2

关键词: Alternative designs;    Channel diameters;    Geometric characteristics;    Hermetic reciprocating compressor;    Induced vibrations;    Numerical investigations;    Pressure pulsation;    Transient numerical analysis;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/604/1/012017/pdf
DOI  :  10.1088/1757-899X/604/1/012017

来源: IOP

【 摘 要 】

In hermetic reciprocating compressors, it is possible to improve the sound quality of the compressor as well as to minimize the discharge line flow losses of the compressor by optimization of the pressure pulsations in the discharge line. Pressure pulsation induced vibrations significantly affect both the sound quality and the vibration level of the entire cooling system. This study is prepared to minimize the pressure pulsations in the discharge line of the compressor by comparing and determining the effects of alternative designs on pressure pulsations with the numerical results of base and alternative designs formed by differentiation of crankcase orifice diameter and discharge muffler channel diameter from the discharge line design parameters. In this paper, the design parameters that affect the discharge line pressure pulsations and flow losses were investigated with a transient CFD analysis methodology, which was developed and confirmed by experimental measurements in previous study. At the end of the study, the geometric characteristics of the different design parameters of the discharge line such as orifice diameters are presented with transient numerical analysis.