Abstracts Vapor compression refrigeration and heat pump (VCRHP) systems consume large
amounts of energy annually. Therefore, improving the VCRHP system efficiency holds …

The evolution of computer resources paved the way for numerical models to substitute
extensive experimental campaigns to develop and optimize compressors for the HVAC&R …

The rolling piston type rotary compressors consume huge amount of energy in buildings due
to the large quantity of applications in household as well as commercial air-conditioners and …

This paper presents a comparative analysis on leakage losses of a rolling piston type rotary
compressor with refrigerants of R290, R22 and R410a. In particular, the difference of …

In this paper a non-isothermal two-phase model for oil–R134a refrigerant mixture flow is
presented to predict the R134a leakage through the radial clearance of rolling piston …

This paper presents refrigerant R134a and oil (PAG 46) mixture upward flow in the vertical
header of microchannel heat exchanger (compared to pure R134a and R410A), and its …

The leakage characteristics during the compression process in a rolling piston rotary
compressor were investigated in this research. The thermodynamic conditions and …

Piston dynamics plays a fundamental role in several processes related to the operation of
hermetic reciprocating compressors used in refrigeration. For example, the refrigerant …

This paper proposes a numerical model to predict the growth of gaseous refrigerant bubbles
in oil-refrigerant mixtures with high contents of oil subjected to isothermal depressurization …

Lubricant in compressor usually flows out with refrigerant. Thus, it is evitable for lubricant to
be present in the heat exchanger, which significantly affects the heat exchanger …