Systems in Water Power Turbine Development
The primary goal of the Water Power Program is to efficiently develop and utilize marine hydrokinetic (MHK) and conventional hydropower (CH) resources. The program has recently identified the need to better understand the potential for hydrokinetic energy development within existing canal systems that may already have integrated CH plants. Hydrokinetic (HK) turbine operation can alter water surface elevations and modify the flow in a canal. Significant water level alterations and hydrodynamic energy losses are generally undesirable not only for CH plan operations, but also for irrigation and flood management operations. The goal of this study is to better understand the effect of operating individual and arrays of devices on local water operations through field measurements and numerical modeling. A methodology to study the effect of hydrokinetic turbine deployment is being conducted at a Washington State test sight. The data collection is comprised of detailed water level and velocity measurements to characterize energy gradeline, inflow and wakeflow fields.
Instream Energy Systems Hydrokinetic Turbine
Thrust force and torque acting on the turbine will be determined using strain gage measurements and both a Binsfeld TempTrak TT10K and Revolution system. Strain gages will be mounted to the rotating turbine shaft. The measured signals will be transferred to OpDAQ Data Acquisition Systems. Then, the thrust force acting on the rotor will be derived from the strain measurement, shaft material properties, shaft geometry and shaft dimensions. The measured thrust force can be used to derive a thrust coefficient, a critical input parameter for numerical models to simulate the effect of a hydrokinetic turbine deployment.
Reference: FIELD MEASUREMENT TEST PLAN TO DETERMINE EFFECTS OF HYDROKINETIC TURBINE DEPLOYMENT ON CANAL TEST SITE IN YAKIMA, WA, USA
Corresponding author: Budi Gunawan, Sandia National Laboratories