scholarly journals Criteria for the selection of SO/sub 2/ sorbents for atmospheric pressure fluidized-bed combustors. Volume 2. Tasks II and III report: experimental work, sorbent selection technique. Final report, November 1, 1976-July 31, 1977

1979 ◽  
Author(s):  
N. Ulerich ◽  
E. O'Neill ◽  
M. Alvin ◽  
D. Keairns
Keyword(s):  
Fluidized Bed ◽  
Experimental Work ◽  
Atmospheric Pressure ◽  
Final Report ◽  
Selection Technique ◽  
Selection Of

Digital platforms under fire: What Australia can learn from recent developments in Europe

2018 ◽  
Vol 43 (4) ◽  
pp. 275-282
Author(s):  
Samson Esayas ◽  
Dan Svantesson
Keyword(s):  
Court Decision ◽  
Final Report ◽  
Court Decisions ◽  
Clear Trend ◽  
Digital Platforms ◽  
Recent Developments ◽  
Selection Of

There is a clear trend of a hardening attitude towards digital platforms. In Australia this trend is exemplified by the Australian Competition and Consumer Commission’s current inquiry specifically into digital platforms. Further, it can also be seen in court decisions. Having discussed one such court decision, we give a brief overview of the Australian Competition and Consumer Commission’s digital platforms inquiry. We then seek to bring attention to a selection of particularly relevant European developments that may usefully inform how Australia proceeds in this arena and that may be considered in the Australian Competition and Consumer Commission’s final report due to be provided to the Treasurer on 3 June 2019.

Maximizing Human Power Output by Suitable Selection of Motion Cycle and Load

1970 ◽  
Vol 12 (3) ◽  
pp. 315-329 ◽  
Author(s):  
J. Y. Harrison
Keyword(s):  
Mechanical Properties ◽  
Experimental Work ◽  
Power Output ◽  
Factors Affecting ◽  
Human Power ◽  
Input Motion ◽  
Ergometer Cycling ◽  
Selection Of

In this paper various factors affecting human power output are discussed, including the mechanical properties of muscle, the geometry of the input motion and the kinematics of the input motion. A mulitpurpose ergometer, designed and built to take account of these factors is described. Two basic motions are possible on the ergometer: cycling and rowing. The rowing motions may be made with any combination of seat and feet either sliding or fixed. In the rowing motions, during a single to and fro cycle, prescribed variations in velocity of the input links can be forced on a subject. Experimental work, which is described, showed that there are considerable differences in the effectiveness of the various ways of working, and that one in particular, a modified rowing motion, allowed the production of greater average amounts of power for periods up to two minutes than have so far been recorded and published (to the author's knowledge).

Study of an Atmospheric Freeze Drying Refrigeration System

2013 ◽  
Vol 860-863 ◽  
pp. 1674-1678
Author(s):  
Peng Xia ◽  
Kun Tian ◽  
Xiao Lu Ma ◽  
Le Ren Tao ◽  
Ying Ling Cai
Keyword(s):  
High Pressure ◽  
Water Vapor ◽  
Fluidized Bed ◽  
Freeze Drying ◽  
Pressure Ratio ◽  
Outer Wall ◽  
Input Power ◽  
Refrigeration Cycle ◽  
Refrigeration System ◽  
Selection Of

High-pressure air compressed by air compressor, is isobarically cooled and adiabatically expanded and is turned to low temperature air, which enters the adsorbent fluidized bed to freeze the materials. After the freezing of the materials, adsorbent will adsorb water vapor, which can play the effect of atmospheric freeze drying. The recovery power of the expander can be used as input power of the subsidiary refrigeration cycle. In order to adjust the temperature of the fluidized bed, evaporator coils of the affiliated refrigeration system are directly wound on the outer wall of the fluidized bed. This paper studies the combined refrigeration system, and analyzes the influence of different refrigerant pressure ratio, fluidized bed outlet air temperature, and refrigerant selection of subsidiary refrigeration cycle on the performance of the system.

Properties and Environmental Considerations Related to AFBC Solid Residues

1986 ◽  
Vol 86 ◽  
Author(s):  
E. E. Berry ◽  
E. J. Anthony
Keyword(s):  
Trace Elements ◽  
Fluidized Bed ◽  
Temperature Rise ◽  
Atmospheric Pressure ◽  
Alkaline Ph ◽  
Fluidized Bed Combustion ◽  
Dissolved Solids ◽  
Factors Influencing ◽  
Coal Ashes ◽  
Environmental Considerations

ABSTRACTAtmospheric-pressure fluidized bed combustion (AFBC) produces solid residues that are different from the familiar pulverized coal ashes. When limestone beds are used to adsorb SOx, high-Ca residues, comprised largely of CaO and SO4, are produced. Leachates from high-Ca AFBC residues are strongly alkaline (pH >11) and contain high levels of dissolved solids (TDS >3000 mg/L). If water is added during handling, hydration of CaO may cause a temperature rise and hydration of CaSO4 may result in premature hardening of the residues. Trace elements and organic components may leach from disposal sites. This paper presents an overview of the nature of AFBC residues and the factors influencing their disposal.

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