MASS FLOW RATE DISTRIBUTION AND PHASE SEPARATION OF R-22 IN MULTI-MICROCHANNEL TUBES UNDER ADIABATIC CONDITION

2004 ◽  
Vol 8 (2) ◽  
pp. 129-139 ◽  
Author(s):  
Honggi Cho ◽  
Keumnam Cho
Keyword(s):  
Phase Separation ◽  
Mass Flow Rate ◽  
Mass Flow ◽  
Flow Rate ◽  
Adiabatic Condition ◽  
Rate Distribution ◽  
Microchannel Tubes

Flow Field in the Tip Gap of a Planar Cascade of Turbine Blades

1989 ◽  
Vol 111 (3) ◽  
pp. 276-283 ◽  
Author(s):  
M. Yaras ◽  
Yingkang Zhu ◽  
S. A. Sjolander
Keyword(s):  
Mass Flow Rate ◽  
Mass Flow ◽  
Flow Rate ◽  
Pressure Difference ◽  
Good Accuracy ◽  
Flow Direction ◽  
Turbine Blades ◽  
Rate Distribution ◽  
Velocity Magnitude ◽  
The Relationship

Measurements are presented for the flow in the tip gap of a planar cascade of turbine blades. Three clearances of from 2.0 to 3.2 percent of the blade chord were considered. Detailed surveys of the velocity magnitude, flow direction, and total pressure within the gap were supplemented by blade surface and endwall static pressure measurements. The results help to clarify the relationship between the leakage mass flow rate distribution and the driving pressure differences. It was found that even for the present relatively large clearances, fluid near the endwall experiences a pressure difference that is comparable with the blade pressure difference. It is also shown that a simple model can predict with good accuracy the mass flow rate distribution and the magnitude and direction of the velocity vectors within the gap.

RANS-Based CFD Calculation for Pressure Drop and Mass Flow Rate Distribution in an MTR Fuel Assembly

2020 ◽  
pp. 1-18
Author(s):  
N. L. Scuro ◽  
G. Angelo ◽  
E. Angelo ◽  
P. E. Umbehaun ◽  
W. M. Torres ◽  
...  
Keyword(s):  
Pressure Drop ◽  
Fuel Assembly ◽  
Mass Flow Rate ◽  
Mass Flow ◽  
Flow Rate ◽  
Rate Distribution

Optimized mass flow rate distribution analysis for cooling the ITER Blanket System

2014 ◽  
Vol 89 (7-8) ◽  
pp. 1324-1329 ◽  
Author(s):  
Germán Pérez ◽  
Raphaël Mitteau ◽  
Andreas Furmanek ◽  
Alex Martin ◽  
René Raffray ◽  
...  
Keyword(s):  
Mass Flow Rate ◽  
Mass Flow ◽  
Flow Rate ◽  
Distribution Analysis ◽  
Rate Distribution

Mocrochannel Evaporators of the Residential Air-Conditioner

2007 ◽  
Author(s):  
Honggi Cho ◽  
Keumnam Cho
Keyword(s):  
Mass Flow Rate ◽  
Mass Flow ◽  
Flow Rate ◽  
Cooling Capacity ◽  
Area Ratio ◽  
Circulation System ◽  
Air Conditioner ◽  
Flow Area ◽  
Vapor Compression System ◽  
Microchannel Tubes

The objective of present work was to evaluate the performance of microchannel evaporators of the residential air-conditioner using R-22. Six prototype evaporators were manufactured and tested with psychrometric calorimeter test facilities. The test was conducted in two different ways. Each evaporator consisted of two parallel flow type heat exchangers connected with several return pipes. The heat exchanger had 41 microchannel tubes that had 8 rectangular ports with the hydraulic diameter of 1.3 mm. For the vapor compression system (VCS), the flow area ratio and the number of return pipe had a great effect on the cooling capacity. Type 3 with the flow area ratio of 73/ 58% showed best cooling capacity. The effect of the number of circuit and merging manifold on the cooling capacity was relatively small. For the refrigerant circulation system (RCS), the cooling capacity of the test evaporators was a little bit changed as the mass flow rate and inlet quality increased. The effect of mass flow rate on the cooling capacity was slightly superior to that of inlet quality. The effect of the number of circuit on the cooling capacity was different with the result of the VCS, while the effect of merging manifold was negligible. The cooling capacity proportionally increased as the vertical inclination angle of the evaporator increased due to gravity force.

The standard unit mass flow rate of gas-liquid mixtures

2020 ◽  
pp. 13-16
Author(s):  
V.N. Petrov ◽  
◽  
V.F. Sopin ◽  
L.A. Akhmetzyanova ◽  
Ya.S. Petrova ◽  
...  
Keyword(s):  
Mass Flow Rate ◽  
Mass Flow ◽  
Flow Rate ◽  
Liquid Mixtures ◽  
Unit Mass ◽  
Standard Unit

Prediction of Leakage Mass Flow Rate Through Gas Springs

1987 ◽  
Author(s):  
Roberto Bruno Bossio ◽  
Vincenzo Naso ◽  
Marian Cichy ◽  
Boleslaw Pleszewski
Keyword(s):  
Mass Flow Rate ◽  
Mass Flow ◽  
Flow Rate
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