Machine Parts

Now a days a combination of different type of simulation tools has been used. For operational aspects, a combination of physical models, including energy and mass balances, and statistical models, like partial least square (PLS) models, provided with the gas composition under different operating conditions. Real process aspects like kinetics and the difference in product gas quality as a function of temperature, load and relative oxidation during the gasification was included. Direct system design was addressed using equilibrium calculations with programs like ASPEN plus. In principle, different conditions can be calculated by changing different variables, although no information of the direct absolute gas composition can be obtained. Experimental data from operation of pilot plants and real processes using different fuels and operation conditions. Comparison or Difference between Steam Power Plant and Hydro-electric Power Plant   Power Pl

  Deriaz Turbine which is a reaction turbine. It is also known to as a diagonal turbine. P. Deriaz who is the inventor of Deriaz Turbine. By following his name it’s name is Deriaz   Turbine. This turbine intermediate between the mixed flow and the axial flow turbines, because the flow of water as it passes through the runner is at an angle of 45 °C   to axis. Deriaz   Turbine has some features which is given bellow them: a.        The casing of the turbine is so shaped that there is only small clearance between the blade tips and the casing to reduce leakage loss. b.       Guide vanes are provided ahead of the blades to the regulate and direct flow. c.        It can be employed for heads varying from 30 m to 150 m. d.       The runner has no outer rim connecting all the blades as these blades are movable. e.        The blades of runner are provided to the hub and unlike in the Kaplan turbines, the axes of the blades are inclined to the axis of shaft. The direc

  Flow Nets A grid obtained by drawing a series of streamlines and equipotential lines is known as a flow net. The flow net provide a simple graphical technique for studying two dimentional irrotational flows especially in the cases where mathematically relations for steam function and velocity function are either not available   to are are rather difficult and cumbersome to solve.   Use of flow nets: 1.       Determaination of   the design of the outlets for their streamlining. 2.       Determaination of quantity of seepage and upward lift pressure bellow the hydraulic structure. 3.       Determaination of the streamlines and equipotential lines. 4.       Determaination of the pressure and velocity distribution, for given boundaries of flow. Limitations of flow nets: 1.       The flow net analysis can not be applied in the region close to the boundary where the effects of viscosity are predominant. 2.       In case of a flow of a fluid past a solid