It is well known that the compressor with variable capacities has a higher efficiency than the typical single capacity compressors for the air-conditioner system. Therefore, many compressor makers are trying to develop variable types of capacity-controlling compressors, one of which is a vane locking controlled rotary compressor. This paper investigates the rotary compressor using a vane contro...

Based on the experimental work of a refrigerator compressor with soft suction structures, the new soft suction structures were put forward. The performance of the compressor and the frequency properties of noise were also studied by means of tests. The results showed that these structures could reduce the noise of compressor. The main experiments included refrigeration capacity, COP, vibration,...

An experimental study was conduct to suppress the vortex shedding from a circular cylinder by using a suction flow control method. The suction flow control was accomplished using two suction holes located on the test cylinder model at an angle of 90.0 degrees in relation to the oncoming flow direction. In addition to measuring the pressure distributions around the test model, a high-resolution ...

The present investigation aims to examine the heat flux mechanism in hagnetohydrodynamic (MHD) mixed convective flow of Williamson-type fluid across an exponential stretching porous curved surface. significant role thermal conductivity (variable), non-linear radiation, unequal source-sink, and Joules heating is considered. governing problems are obtained using Navier–Stokes theory, appropriate ...

Construction of complete dentures with adequate retention is a complex procedure. Various techniques have been tried to improve the retention of dentures. Use of suction cup in maxillary denture is one of the techniques to improve retention. Suction cup provides retention and stability by inducing negative pressure on the mucosal surface. Palatal Suction cups which provide high retention are no...

This paper studies the effect of variable viscosity on the transient Couette flow of dusty fluid with heat transfer between parallel plates. The fluid is acted upon by a constant pressure gradient and an external uniform magnetic field is applied perpendicular to the plates. The parallel plates are assumed to be porous and subjected to a uniform suction from above and injection from below. The ...

INTRODUCTION Rigid endoscopes, now available in varying angles (ranging from 0° to 20°), have given otolaryngologists unparalleled visualization of the paranasal sinuses. However, visualization without proper instrumentation to access difficult-to-reach areas can make sinus treatment frustrating and ineffective. Suction access to different areas within the nose and sinuses is not a straightforw...

In this study, we aim to develop a narrow-diameter and long-bore device for minimally invasive surgery that achieves the simultaneous cutting and suction of body tissue such as the diseased part of an organ. In this paper, we propose a screw made of a thin metal plate, and we developed a prototype device using this screw. For smooth operation, the suction performance must be superior to the cut...