Abstract
The technological developments, competition and energy policies are forcing the refrigeration market to increase the efficiency of their products as never before. The component that determines the performance and efficiency of the refrigeration system is the compressor, which is the major energy consumer in a compression refrigeration system. One of the essential elements of the total compressor efficiency is the discharge line flow efficiency that is subjected to this study. In this paper, the effects of design parameters on flow loses at discharge line of a hermetic reciprocating compressor were investigated with numerical flow analysis. At this study, three conceptual designs were modelled based on the discharge line design parameters such as line diameter, resonator volumes and line length. The pressure drop regions are determined by CFD analyses and they compared against the base model. Analyses are carried out by using commercial CFD software. Furthermore, the obtained numerical results were compared to experimental data and presented a good agreement in terms of pressure drop and discharge line flow efficiency.
Highlights
In recent years, the growing global need for energy and running out of the natural energy sources has forced the human beings to find alternative sources and use the existing ones efficiently
Due to the hot and high pressurized refrigerant within the discharge passage, heat transfer occurs from the discharge line to the other compressor components and the refrigerant inside the shell
This study intends to reduce the length of discharge passage by using the conceptual designs that the details mentioned above
Summary
The growing global need for energy and running out of the natural energy sources has forced the human beings to find alternative sources and use the existing ones efficiently. Compressors determine the performance and efficiency of the cooling system This basic component of the cooling system consumes the electrical energy and converts it to energy stored in form of pressure of the evaporated refrigerant. Rigola et al (2002) experimentally investigated the thermal and flow characteristic of a hermetic reciprocating compressor by transient temperature and pressure measurements. They obtained a comparison of the experimental data and the numerical results by using an advanced detailed code. Within the scope of this study, the effects of some of the structural changes to flow losses at discharge line of a household type hermetic reciprocating compressor were investigated experimentally. By performing precise pressure measurements and calorimeter tests; cooling capacity, COP (Coefficient of Performance) values and pressure drop rates of conceptual designs were compared against the base model and each other of the conceptual design compressors
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
