Heat and mass flow analysis of thermally-driven circulation system with supercritical CO_2

2004 ◽  
Vol 2004.17 (0) ◽  
pp. 33-34
Author(s):  
Hiroshi INOMATA
Keyword(s):  
Mass Flow ◽  
Flow Analysis ◽  
Circulation System ◽  
Thermally Driven

Autostoichiometric vapor deposition: Part I. Theory

1995 ◽  
Vol 10 (10) ◽  
pp. 2536-2541 ◽  
Author(s):  
Ren Xu
Keyword(s):  
Mass Flow ◽  
Vapor Deposition ◽  
Flow Analysis ◽  
Quantitative Measure ◽  
Low Pressure ◽  
Potential Candidate ◽  
Organic Complexes ◽  
Reaction Schemes

The possibility of an autostoichiometric vapor deposition is explored. Heterometal-organic complexes such as double alkoxides are potential candidate precursors for such deposition. Two reaction schemes, the hydrolysis-assisted pyrolysis and the hydrolysis-polycondensation of double alkoxides, are identified to be autostoichiometric reactions. A simple low-pressure apparatus is suggested for autostoichiometric vapor deposition. Mass-flow analysis allows for the identification of a nonstoichiometry factor K which can be used as a quantitative measure of the precursor's autostoichiometric capability.

scholarly journals Air Mass Flow Analysis for SI Engine: EGR and Scavenging

2008 ◽  
Vol 41 (2) ◽  
pp. 8495-8500 ◽  
Author(s):  
Antonio Palma ◽  
Angelo Palladino ◽  
Giovanni Fiengo ◽  
Ferdinando De Cristofaro ◽  
Fabio Garofalo ◽  
...  
Keyword(s):  
Mass Flow ◽  
Flow Analysis ◽  
Si Engine ◽  
Air Mass

Performance Evaluation of Gear Pump by 2D Unsteady CFD Analysis

2013 ◽  
Author(s):  
K. Anil Kumar ◽  
N. Balamuralikrishnan
Keyword(s):  
Mass Flow ◽  
Transient Flow ◽  
Flow Analysis ◽  
Adverse Pressure Gradient ◽  
Implant Design ◽  
Gear Pump ◽  
Time Step ◽  
Design Synthesis ◽  
Angular Velocities ◽  
Rotation Motion

Gas Turbine development activities have been associated with development of different pumps and its allied subsystems used for fuel supply and lubrication oil supply at different engine operating condition. 2D transient flow analysis of a Dual pump has been carried out in an environment with an adverse pressure gradient to map important parameters like pressure, velocity, mass flow and effect of slip. Three achievable close tolerances were selected and carried out the analysis. Finally identified tolerance to be maintained during manufacturing based on the analysis. A moving dynamic mesh concept was adopted because of its capability to facilitate solving transient flow problem and motion of the domain boundaries. A simulated motion control was decided based on the time step, angular velocities of gears rotation motion and coded through a User defined function (UDF) to give angular momentum. Each analysis was carried out for 180 degree of rotation. The main parameter mass flow rate was monitored for different speed and outlet pressures. A validation experimental test was carried out at one rpm thus build up a confidence in implant design synthesis to meet challenges in future.

Paper 23: An Experimental Investigation of Non-Steady Flow in a Radial Gas Turbine

1965 ◽  
Vol 180 (10) ◽  
pp. 74-85 ◽  
Author(s):  
R. S. Benson ◽  
K. H. Scrimshaw
Keyword(s):  
Steady Flow ◽  
Mass Flow ◽  
Pulse Generator ◽  
Flow Analysis ◽  
Pulse Frequency ◽  
Exhaust Pipe ◽  
Transient Pressure ◽  
Radial Turbine ◽  
Admission Data ◽  
Partial Admission

Comprehensive steady and non-steady flow tests on a small radial turbine turbo-charger are given. Steady flow tests included both full admission and partial admission over the whole speed and pressure range from zero flow to maximum flow. Non-steady flow tests were carried out over a pulse frequency range from 30 to 70 pulses/s and turbine speeds from 30 000 to 60 000 rev/min with the turbine coupled to the exhaust system of a six-cylinder pulse generator under partial admission conditions. Extensive transient pressure and temperature measurements were taken upstream and downstream (pressure only) of the turbine. The total mass flow and power were also measured. A quasi-steady flow analysis was carried out using the steady flow test data. The tests results showed that for a six-cylinder exhaust pipe configuration, with two exhaust pipes entering separate nozzle segments in the radial turbine, the quasi-steady flow analysis using partial admission data grossly underestimated the mass flow and power output of the turbine. Using full admission data the ratio of measurement mass flow and horsepower to the calculated mass flow and horsepower was nearly always greater than unity. Furthermore, the average turbine efficiency was greater under non-steady flow than under steady flow. The magnitude of the recorded effects was dependent on the pulse frequency and turbine speed.

Probabilistic Power and Mass Flow Analysis for Integrated Electricity and Heating Networks

2018 ◽  
Vol 144 (4) ◽  
pp. 04018041 ◽  
Author(s):  
Lun Yang ◽  
Xia Zhao ◽  
Sui Peng ◽  
Wei Yan
Keyword(s):  
Mass Flow ◽  
Flow Analysis ◽  
Heating Networks

Quantification of food waste in school canteens: A mass flow analysis

2021 ◽  
Vol 164 ◽  
pp. 105176
Author(s):  
Saraswathy Kasavan ◽  
Nurul Izzati Binti Mohd Ali ◽  
Sharif Shofirun Bin Sharif Ali ◽  
Nadia Azia Binti Masarudin ◽  
Sumiani Binti Yusoff
Keyword(s):  
Mass Flow ◽  
Food Waste ◽  
Flow Analysis

An Experimental Study of a “Once-Through” Thermosiphon System

1988 ◽  
Vol 110 (2) ◽  
pp. 90-97 ◽  
Author(s):  
R. Celentano ◽  
R. Kirchner
Keyword(s):  
Experimental Study ◽  
Mass Flow ◽  
Natural Circulation ◽  
Time Dependent ◽  
Circulation System ◽  
Outlet Temperature ◽  
Flow Rates ◽  
Mass Flow Rates ◽  
New Type ◽  
Mass Flows

An experimental study was conducted on the operation of a “once-through” thermosiphon system. This new type of natural circulation system, unlike the standard thermosiphon system, heats the collector fluid in one pass without any recirculation. An electrically heated manifold was used to simulate the useful solar gain. Power was varied with time in 22 half-hour increments to simulate the actual daily useful solar gain. The time-dependent responses of the system in terms of temperatures and mass flow rates were recorded and plotted. The response time for mass flow and temperature to approach steady state varied directly with the size of the power step. Two experiments were conducted; one which tracked mass flows and outlet temperatures for variable useful solar gains, and a second which tracked mass flows at constant outlet temperature for variable useful solar gains.

Mass Flow Analysis of the Ultraviolet Spectrum of UW Canis Majoris

1980 ◽  
pp. 195-198
Author(s):  
H. Drechsel ◽  
Y. Kondo ◽  
G. E. McCluskey ◽  
J. Rahe
Keyword(s):  
Mass Flow ◽  
Flow Analysis ◽  
Ultraviolet Spectrum
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