Simulation and comparison of leakage characteristics of R290 in rolling piston type rotary compressor

Numerical investigation on the flow resistance characteristics of balance block in the rotary compressor

“…[3,4] In past decades, many scholars would pay more attention to different types of leakage losses in the cylinder to enhance the thermal performance and improve the efficient of rotary compressor system. Cai et al [5,6] and He et al [7] conducted a theoretical method to calculate several kinds of leakage losses in rotary compressor and proposed the experimental investigation to compare the theoretical results with experimental results, which proved the validity of theoretical method. Pan et al [8] presented a method to analyze leakage mass flow rate of six different leakage patterns, furthermore, verified the simulated results by monitoring the errors between the theoretical refrigerant mass flow rate and the experimental refrigerant mass flow rate.…”

Döngüsel Kompresörlerde Teknolojik Gelişmeler

“…İç sızıntıların, çalışma odasını oluşturan parçalar arası boşlukları azaltarak en az düzeye indirilebileceği düşünülmektedir [53]. Bu nedenle, özellikle yağlayıcı içermeyen kompresörlerde dahili sızıntıları ölçme ve modelleme araştırmacıların ilgi odağı olmuştur [54][55][56][57][58]. Şekil 6'da döngüsel kompresördeki kaçak meydana gelebilecek olan bölümler kırmızı ile gösterilmiştir [18].…”

A Review on Sliding Vane and Rolling Piston Compressors

“…Single-phase flow leakage models assume isentropic flow [11] with a correction term such as a flow coefficient [74,106] which can include viscous [107,108] and/or inertial effects [109] for accuracy. On the other hand, homogenous two-phase flow models assume thermal equilibrium [110] or isothermal conditions [111,112]. Additionally, spatially varying temperature distribution of the homogenous two-phase flow model [113] may be taken into consideration but increases model complexity.…”

“…For R290, its high solubility in polyalkylene glycol oil resulted in higher leakage losses [112]. Evaluation of lubrication performance using R290 with mineral oil was carried out at high ambient temperatures [184] along with reliability testing that indicate both mineral and synthetic oil are compatible with R290 [185] although higher friction coefficients were observed with mineral oil at the vane and roller interface [155].…”