Numerical Simulation on the Effect of Inlet-Collision in Oil-Gas Separator Used for Air-Conditioning System

2013 ◽  
Vol 448-453 ◽  
pp. 3378-3381
Author(s):  
Jian Jun Meng ◽  
Yi Luo ◽  
Gang Yan ◽  
Jian Mei Feng
Keyword(s):  
Air Conditioning ◽  
Separation Efficiency ◽  
Three Dimensional ◽  
Separation Performance ◽  
Gas Field ◽  
Pipe Length ◽  
Air Conditioning System ◽  
Inlet Velocity ◽  
Gas Separator ◽  
Oil Gas

A three-dimensional steady-state numerical model of oil-gas separator with inlet-collision structure used in small-sized Variable Refrigerant Flow (VRF) system was established. RNG k-ε model was used in gas field and DRW model was chosen for oil droplets tracking. The influence of inlet-collision on velocity distribution, separation efficiency and pressure loss were studied. The results showed that the inlet-collision structure which had smaller radio of inner pipe length to cyclone bodys height could achieve the same separation efficiency as the no inlet-collision structure with bigger cyclone diameter. Higher separation performance could be obtained when the inlet-collision proportion was less than 26.57% and inlet velocity was about 24 m·s-1.

Experimental Study and Analysis of Different Air-Injecting Segment on the Separation Performance of Air-Injected De-Oiling Hydrocyclone

2008 ◽  
Author(s):  
Minghu Jiang ◽  
Dehai Chen ◽  
Lixin Zhao ◽  
Liying Sun
Keyword(s):  
Experimental Study ◽  
Theoretical Analysis ◽  
Separation Efficiency ◽  
State Of The Art ◽  
Experimental Studies ◽  
Separation Performance ◽  
Research Results ◽  
Compound Body ◽  
Oil Gas

Developing state-of-the-art and separating principle of deoiling hydrocyclones are introduced. By theoretical analysis, the ways to enhance hydrocyclone’s separation efficiency are described. One way is to inject air into the hydrocyclones so as to combine with oil to form oil-gas compound body, and then increase de-oiling efficiency. By means of injecting air into large cone segment, or fine cone segment of the hydrocyclone, experiments were carried out. It is found that the best injecting part is fine cone segment. Further experimental studies were continued for confirming detail part in fine cone segment, which includes one-third segment and two-thirds segment for the sake of research. Results show that the best air-injecting part is the first one-third segment of fine cone segment. This conclusion would be useful for understanding of air-injected de-oiling hydrocyclone’s separating process, and for its design and applications.

Experimental investigation on oil-gas separator of air-conditioning systems

2019 ◽  
Vol 13 (2) ◽  
pp. 411-416 ◽  
Author(s):  
Dianbo Xin ◽  
Shuliang Huang ◽  
Song Yin ◽  
Yuping Deng ◽  
Wenqiang Zhang
Keyword(s):  
Experimental Investigation ◽  
Air Conditioning ◽  
Gas Separator ◽  
Air Conditioning Systems ◽  
Oil Gas

Numerical Simulation and Response Surface Optimization of Oil-Gas Separator

2012 ◽  
Vol 466-467 ◽  
pp. 396-399
Author(s):  
Chang Dong Wan
Keyword(s):  
Response Surface ◽  
Separation Efficiency ◽  
Good Method ◽  
Design Parameters ◽  
Discrete Phase Model ◽  
Response Surface Optimization ◽  
Discrete Phase ◽  
Gas Separator ◽  
Quantified Analysis ◽  
Oil Gas

CFD (computational fluid dynamics) is a good method for simulation of the oil-gas separator. When the volume concentration is less than 10%, the oil particle tracks can be simulated by DPM （Discrete Phase Model）. The results show that the separation efficiency is obviously affected by the diameter of separator air-outlet, the diameter of separator oil-outlet, and the angle of separator cone. But the quantified analysis on separation efficiency is difficultly brought forward by CFD. RSM (response surface methods) can help to identify factors influencing the responses by experiments. Finally, the optimum responses and design parameters will be obtained altogether.

Hydrogen Production by Hydrolyzing Zn Nano-Particles in a Cyclone Reactor

2010 ◽  
Vol 152-153 ◽  
pp. 1066-1070
Author(s):  
Bo Xu ◽  
Shu Lin Wang ◽  
Sheng Juan Li ◽  
Lai Qiang Li
Keyword(s):  
Chemical Reaction ◽  
Separation Efficiency ◽  
Three Dimensional ◽  
Experimental System ◽  
Close Relation ◽  
Nano Particles ◽  
Tem Analysis ◽  
Water Steam ◽  
Inlet Velocity ◽  
Solid Form

A new experimental system is presented to make hydrogen by hydrolyzing Zn nano-particles in a cyclone reactor, in which the chemical reaction and gas-solid separation are carried out simultaneously. The gas-solid form a three-dimensional, turbulent flow-field induced by strong revolving force. The turbulent moving improves the efficiency of heat and mass transfer, which is favorable to chemical reaction. And the Zn nano-particles of 10-20nm preheated at about 523K can react with water steam rapidly. XRD and TEM analysis shows that the solid product consists of ZnO and Zn and has a blended morphology of nano-rods and nano-flakes. The gas-solid separation efficiency primarily depends on the inlet velocity when the particle size distribution is determined, and the particle resident time in the reactor has close relation to Reynolds number of gas inlet. It is confirmed that the steam inlet velocity of 10m/s and Ar inlet velocity of 5m/s are favorable.

Research on Separation Efficiency for Oil/Gas Separator of Submersible Electrical Pump

2013 ◽  
Vol 295-298 ◽  
pp. 3261-3264 ◽  
Author(s):  
Xing Liang Song
Keyword(s):  
Theoretical Foundation ◽  
Separation Efficiency ◽  
Experiment Data ◽  
Two Phase ◽  
Well Production ◽  
Production Parameters ◽  
Flow Parameters ◽  
Gas Separator ◽  
The Mathematical Model ◽  
Oil Gas

The criteria equation was established by using dimensional analysis; through the method of field experiment measuring the flow parameters of two-phase-flow in the gas-separator in this paper, combining with the criteria equation and experiment data, the mathematical model, which can quantitatively describe the relation between separation efficiency and the gas fluid ratio by using numerical method, is established; and the relational plate is plotted between the separation efficiency and the separation time in the case of different gas fluid ratio, which can provide theoretical foundation for the optimization of the well production parameters and the geometric structure parameters of the oil/gas separator under the submersible electrical pump.

Experimental Study of Oil-Gas Cyclone Separator Performance in Oil-Injection Compressor System

2011 ◽  
Vol 383-390 ◽  
pp. 6436-6442
Author(s):  
Xin Yang ◽  
Jian Mei Feng ◽  
Yun Feng Chang ◽  
Xue Yuan Peng
Keyword(s):  
Experimental Study ◽  
Separation Efficiency ◽  
Droplet Size Distribution ◽  
Separation Performance ◽  
Cyclone Separator ◽  
Particle Size Analyzer ◽  
Oil Concentration ◽  
Oil Injection ◽  
Oil Gas ◽  
Oil Droplet Size

Experimental study of the separation efficiency of oil-gas cyclone separator for oil-injection compressor system was conducted with the aim of understanding the separation process and identifying the main parameters affecting the separation efficiency. Malvern Particle Size analyzer was applied to analyze the separators’ performance. By simultaneously measuring the oil droplet size distribution and oil concentration upstream and downstream of the separators, the separation performance was assessed. The results of the study contribute to an optimized cyclone separator design.

scholarly journals Development of an air conditioning system with individual regulation of temperature and air flow rate in a compartment of a passenger car

2021 ◽  
Vol 80 (1) ◽  
pp. 30-34
Author(s):  
G. M. STOYAKIN ◽  
A. V. KOSTIN ◽  
S. N. NAUMENKO
Keyword(s):  
Air Temperature ◽  
Flow Rate ◽  
Air Conditioning ◽  
Air Flow ◽  
Three Dimensional ◽  
Air Flow Rate ◽  
Passenger Cars ◽  
Air Conditioning System ◽  
Air Supply ◽  
Individual Regulation

Maintaining optimal parameters of the microclimate in the car along the route is the most important requirement for the passenger’s travel. In the 1st class passenger cars, maintaining optimal microclimate parameters is achieved through the operation of the air conditioning system, which provides individual regulation of the air temperature in each compartment. Individual air temperature control systems used in air conditioning systems are divided into two groups: active and passive.The article proposes for consideration a combined active-passive system with a separate air supply with a lower and higher temperature compared to the temperature maintained in the compartment and the installation of individual induction terminals, which makes it possible to increase the efficiency of individual regulation of air parameters in the compartment.To assess the uniformity of temperature distribution and air flow rate over the car volume with the proposed control scheme, a three-dimensional modeling of the distribution of these parameters in the compartment was carried out on the basis of Autodesk CFD software.The given simulation results indicate the uniformity of temperature and air flow rate distribution over the compartment volume, which makes it possible to characterize the proposed system as sufficiently energy efficient, easy to operate and reliable in operation.

scholarly journals Experimental Research and Numerical Simulation on Gas-Liquid Separation Performance at High Gas Void Fraction of Helically Coiled Tube Separator

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Yongxue Zhang ◽  
Chan Guo ◽  
Hucan Hou ◽  
Guomin Xue
Keyword(s):  
Numerical Simulation ◽  
Pressure Drop ◽  
Void Fraction ◽  
Separation Efficiency ◽  
Separation Performance ◽  
Liquid Separation ◽  
Inlet Velocity ◽  
Coiled Tube ◽  
Helically Coiled Tube ◽  
Gas Void Fraction

The industrial removal process of the light hydrocarbon and water from wet natural gas can be simulated in laboratory with the independently designed helically coiled tube gas-liquid separator. Experiment and numerical simulation are combined to analyze the influences of various inlet velocities and gas void fractions on the gas-liquid separation efficiency and pressure-drop between the inlet and outlet of the helically coiled tube. The results show that, at the inlet velocity of 4 m/s to 18 m/s and the gas void fraction of 88% to 97% for the gas-liquid mixture, the gas-liquid separation efficiency increases at the beginning and then decreases with increasing inlet velocity. Afterwards there is another increasing trend again. The gradient of pressure-drop increases slowly and then fast with the increasing inlet velocity. On the other hand, the gas-liquid separation efficiency first increases with the gas void fraction and then shows a decreasing trend while the pressure-drop keeps falling down with the gas void fraction increasing. Above all the optimal operating parameters of the helically coiled tube separator are inlet velocity of 13 m/s and gas void fraction of 93%, and the separation efficiency and pressure-drop are 95.2% and 0.3 MPa, respectively.

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