The analysis on bio-drying potential of sewage sludge in the North of China
This paper analyzes the overview of northern sewage sludge, focusing on the potential of bio-drying of sewage sludge in northern China by adopting the technology of biological drying to dispose the sewage sludge. Owning great development potential is the conclusion obtained by the experimental study of the northern sludge.
Transport processes and unit operations
I. TRANSPORT PROCESSES: MOMENTUM, HEAT, AND MASS. 1. Introduction to Engineering Principles and Units. 2. Principles of Momentum Transfer and Overall Balances. 3. Principles of Momentum Transfer and Applications. 4. Principles of Steady-State Heat Transfer. 5. Principles of Unsteady-State Heat Transfer. 6. Principles of Mass Transfer. 7. Principles of Unsteady-State and Convective Mass Transfer. II. UNIT OPERATIONS. 8. Evaporation. 9. Drying of Process Materials. 10. Stage and Continuous Gas-Liquid Separation Processes. 11. Vapor-Liquid Separation Processes. 12. Liquid-Liquid and Liquid-Solid Separation Processes. 13. Membrane Separation Processes. 14. Mechanical-Physical Separation Processes. III. APPENDICES. A1. Fundamental Constants and Conversion Factors. A2. Physical Properties of Water. A3. Physical Properties of Inorganic and Organic Compounds. A4. Physical Properties of Foods and Biological Materials. A5. Properties of Pipes, Tubes, and Screens. Notation. Index.
Accurate measurements of output characteristics and detonations of motorbike high-speed racing engine and their optimization at actual atmospheric conditions and combusted mixture composition
Abstract At a motorbike high speed racing engine there is very important an output engine characteristics which depends significantly on a detonation combustion rate, atmospheric conditions and a combusted mixture composition. The combustion process has got a relevant influence on a wear degree of main engine parts or on their damage eventually. The detonation combustion rate is very important because this kind of burning can be not only destructive but a useful phenomenon, as well. If the process of detonation burning is kept on a certain level, it can help significantly to the next increasing of an engine power output. In this article there is described the measurements of output characteristics of a high-speed racing engine which were performed by means of a data-recording system and the detonation combustion was evaluated using a quantitative method. The actual values of atmospheric conditions and the mixture composition were added to the measured values. Then the obtained values are compared visually with a damage degree of an engine piston caused by the detonation burning. The result is a limit value expressed in a number of detonation units related to a run distance interval of the vehicle driven by the high-speed racing engine. In framework of this run distance interval there is the process of detonation burning profitable. As well as it increases an engine power output and together it is not destructive with regard to engine design parts.