NuSTREEM has two installed hydropower projects, both completed in 2014. One installation is beside NuSTREEM’s manufacturing facility & headquarters office, while the other hydro site is in Massachusetts.
There are five turbines installed at our headquarters in Mansfield, CT. This site is an independently owned hydropower generation facility operating beside our facility. It houses five NuTURBINE LR-100’s, sized with 100 kW generators for a maximum total output capacity of 500kW. The site has approximately 17 ft of head and 450 cfs of flow. The choice of five 100 kW hydroturbines rather than fewer >100 kW turbines was based on using the optimal capability of the variations of the river to generate energy.
Using multiple hydroturbines for high-variability rivers ensures optimal efficiency throughout the flow dynamics by using the ability to turn on or off turbines. As a result of adding or subtracting turbines, the active “on” turbines are all working within their optimal efficiency, if the appropriate number is chosen in accordance with the current flow of the river.
In addition, considering the frequency of low flows of the river, the decision to use a high- resolution configuration of hydroturbines ensured the capture of the lowest flow conditions. Low water flow conditions suggest the use of a single turbine that can produce energy from as little as 15 cfs. The NuTURBINE’s were installed in 2014. This installation has in-excess of 160,000 operational hours.
The NuTURBINE LR-100 was installed in a small site in Massachusetts. A singular NuTURBINE using a 100 kW generator was installed in 2014. This installation has in-excess of twenty- five thousand (25,000) operational hours.
The generator size chosen was due to the energy available in the river. The application is a replacement of two older Francis turbines that were no longer operating efficiently in a small dam configuration.
The operator of this facility is happy with the turbine after approximately five years of operation. He said that the uptime and the efficiency of the system were greatly improved from the former installed hydroturbines.