Energy Efficiency Improvement Solutions for Supermarkets by Low-E Glass Door and Digital Semi-Hermetic Compressor

EER Improvement on a Reciprocating Hermetic Compressor

The Evolution of the High Efficiency Two-Pole Hermetic Compressor

Low Capacity Hermetic Type Compressor For Transcritical CO2 Applications

The use of carbon dioxide (CO2) as a refrigerant is recently considered for an increasing number of various applications including low capacity transcritical processes. Due to the fluid properties of CO2, the pressure ratio of the refrigeration process is rather low compared to common refrigeration processes while the pressure difference is high. Furthermore, the volumetric capacity of CO2 is h...

Efficiency Improvement in Rotary Compressor

This paper presents how we improved the efficiency in rotary compressor. At first, we made effort to estimate the power losses in the compressor, to analyze the operating conditions of the bearing and to calculate the performance of the compressor. Next, the temperature in housing and pressure in cylinder were measured in real compressors in order to obtain the data on the internal conditions o...

An Improved Shape for Hermetic Compressor Housings

An improved acoustic design for a hermetic compressor shell has been developed. The entire shell'surface is described by a single mathematical expression which insures that there are no discontinuities in either the surface or its curvature. The curvature of the improved housing is maximized within the geometric constraints of the size of the interior pumping mechanism and the specified maximum...