instal the new for windows Windows System Control Center 7.0.6.8

Although the turbine design was performed for site conditions corresponding to 92 ft (28 m) net head and a discharge of 1500 cfs (42.5 cms), the more » design can be modified for additional sites with differing operating conditions. The primary goal of the engineering study described here was to provide a commercially competitive turbine design that would yield fish passage survival rates comparable to or better than the survival rates of bypassing or spilling flow.

Department of Energy's (DOE's) former Advanced Hydro Turbine Systems Program (1994-2006) and, more recently, through the Electric Power Research Institute (EPRI) and the DOE's Wind & Water Power Program. The Alden turbine was developed through the U.S. Other criteria which are reflected in the runner design are a minimum number of blades (only two), minimum total length of leading edges, and large flow passages. Important criteria used to develop the new runner design included low pressure change rates, minimum absolute pressures, and minimum shear. Criteria relative to hydraulic characteristics which are favorable for fish passage were prepared based on a reassessment of the available information. Conceptual design of the new runner began with a re-evaluation of studies which have been previously conducted to identify probable sources of injury to fish passing through hydraulic turbines. A flow of 1,000 cfs and a head in the range of 75 ft to 100 ft were selected for conceptual design of the new runner.

The focus of the ARL/NREC research project was to develop a new runner geometry which is effective in downstream fish passage and hydroelectric power generation. more » The Hidrostal pump is a single bladed combined screw/centrifugal pump which has been proven to transport fish with minimal injury.

An existing pump impeller provided the starting point for developing the fish tolerant turbine runner. ARL?NREC have developed a runner shape which minimizes the number of blade leading edges, reduces the pressure versus time and the velocity versus distance gradients within the runner, minimizes or eliminates the clearance between the runner and runner housing, and maximizes the size of the flow passages, all with minimal penalty on turbine efficiency. (ARL) and Northern Research and Engineering Corporation (NREC) conducted a research program to develop a turbine runner which will minimize fish injury and mortality at hydroelectric projects.

Instal the new for windows Windows System Control Center 7.0.6.8