Numerical Modelling of a Novel Two-Stage Linear Refrigeration Compressor

2021 ◽  
Author(s):  
Hao Shen ◽  
Zhaohua Li ◽  
Kun Liang ◽  
Xinwen Chen
Keyword(s):  
Numerical Modelling ◽  
Two Stage ◽  
Refrigeration Compressor

scholarly journals Numerical modelling of heat convection processes in the ducts of two-stage heat exchanger

2021 ◽  
Vol 286 ◽  
pp. 01003
Author(s):  
Zhivko Kolev ◽  
Seher Kadirova
Keyword(s):  
Heat Exchanger ◽  
Numerical Modelling ◽  
Boundary Conditions ◽  
Heat Pump ◽  
Heat Convection ◽  
Convection Coefficient ◽  
Two Stage ◽  
Laboratory Conditions ◽  
Heating And Cooling ◽  
Simulation Results

The paper presents results from numerical modelling in ABAQUS of heat convection processes in the ducts of two-stage “water to air” heat exchanger, used as a heat consumer in reversible heat pump installation. A comparison between the values of heat convection coefficient has been done, as they have been determined on the basis of simulation results, and criterion equations. The heat convection processes have been modelled on the base of boundary conditions, determined by measuring of main parameters. The computing mesh has been verified on the basis of certain temperature values, by successively increasing the number of computing cells. The heat convection processes in the ducts of the heat exchanger have been simulated in “heating” and “cooling” modes of the installation. The study has been performed in laboratory conditions.

Noise control of a two-stage screw refrigeration compressor

2020 ◽  
Vol 167 ◽  
pp. 107383
Author(s):  
Zhilong He ◽  
Yaoxiang Han ◽  
Wenqing Chen ◽  
Minglong Zhou ◽  
Ziwen Xing
Keyword(s):  
Noise Control ◽  
Two Stage ◽  
Refrigeration Compressor

Numerical modelling of thermal and gas-dynamic processes in a two-stage atomizer for analytical spectrometry

2012 ◽  
Vol 79 (12) ◽  
pp. 781 ◽  
Author(s):  
K. Yu. Nagulin ◽  
I. V. Tsivil’skiĭ ◽  
R. I. Nazmiev ◽  
A. Kh. Gil’mutdinov
Keyword(s):  
Numerical Modelling ◽  
Dynamic Processes ◽  
Two Stage ◽  
Gas Dynamic ◽  
Analytical Spectrometry

Two-stage self-seeding method for preparation of single crystals of poly(phenylene sulfide)

1989 ◽  
Vol 47 ◽  
pp. 368-369
Author(s):  
Sengshiu Chung ◽  
Peggy Cebe
Keyword(s):  
Single Crystals ◽  
High Performance ◽  
Dilute Solution ◽  
Two Stage ◽  
Annealing Behavior ◽  
High Performance Polymers ◽  
Seeding Method ◽  
Phenylene Sulfide

We are studying the crystallization and annealing behavior of high performance polymers, like poly(p-pheny1ene sulfide) PPS, and poly-(etheretherketone), PEEK. Our purpose is to determine whether PPS, which is similar in many ways to PEEK, undergoes reorganization during annealing. In an effort to address the issue of reorganization, we are studying solution grown single crystals of PPS as model materials.Observation of solution grown PPS crystals has been reported. Even from dilute solution, embrionic spherulites and aggregates were formed. We observe that these morphologies result when solutions containing uncrystallized polymer are cooled. To obtain samples of uniform single crystals, we have used two-stage self seeding and solution replacement techniques.

364: Two stage "Progressive Elongation of Spermatic Cord" Technique in Criptorchidism with very short Spermatic Vessels

2007 ◽  
Vol 177 (4S) ◽  
pp. 121-121
Author(s):  
Antonio Dessanti ◽  
Diego Falchetti ◽  
Marco Iannuccelli ◽  
Susanna Milianti ◽  
Gian P. Strusi ◽  
...  
Keyword(s):  
Spermatic Cord ◽  
Two Stage

360: A Contemporary Analysis of Two-Stage Hypospadias Repair

2007 ◽  
Vol 177 (4S) ◽  
pp. 120-120
Author(s):  
Pamela I. Ellsworth ◽  
Anthony Caldamone
Keyword(s):  
Hypospadias Repair ◽  
Two Stage

Two-Stage Gastric Surgery Urged for Superobese

2005 ◽  
Vol 38 (18) ◽  
pp. 68
Author(s):  
SHARON WORCESTER
Keyword(s):  
Gastric Surgery ◽  
Two Stage
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