Modeling of Hermetic Scroll Compressors: Model Development

Abstract

This paper presents a comprehensive model for a hermetic scroll compressor. The model combines models of the compression process including leakage and local heat transfer within the scrolls, frictional losses, motor inefficiencies, and heat transfer within the shell and to the ambient. The model is useful for investigating the impact of design changes on compressor performance. Some sample results are presented in this paper. Detailed validation and an investigation of compressor design improvements are described in a companion paper.

Semi-empirical model of scroll compressors and its extension to describe vapor-injection compressors. Model description and experimental validation

“…The model includes the effects of internal leakage and over and under-compression. Chen et al (2002aChen et al ( , 2002bChen et al ( and 2009) presented a detailed model for the compression process of a scroll compressor. A geometrical study was conducted to define the areas and volumes of compressor chambers as a function of the orbiting angle.…”

Modeling of R-410A variable capacity compressor with Modelica and experimental validation

“…Yanagisawa et al (1990) presented the chamber volume as the difference in the swept area bounded by the involutes between points of conjugacy multiplied by the height of the chamber, and Bush and Beagle (1992) worked to formalize the conjugate relationship of the two scroll wraps. A detailed model of the hermetic scroll compressor using R-22 ) and R-410A (Chen et al 2004) was created by incorporating a number of subsystem models together in order to determine temperature, mass flow rate and pressure of the discharge refrigerant. More recently, Blunier et al (2009) examined the scroll geometry by assuming no special cases for the initial angles of the involute and a nonsymmetric discharge process, while Bell et al (2012Bell et al ( ), (2014 presented an improved geometric analysis of the scroll, particularly in the discharge region.…”