Case Study for Customer Location NV94:
Audio Testimonial:
Reservoir or Lake Use:
Original installation was in one of 30 underground water storage tanks used for potable water by the city’s Water District.
System Overview and Reservoir:
This particular tank is a 24.5 MG underground potable water reservoir that is divided in half internally by a barrier. Total dimensions of the reservoir are 3 acres in area and about 25 ft deep.
Reported Problem Before SolarBee Installation:
Objectives were to thoroughly mix the water in the tanks to eliminate stratification, short-circuiting and stagnant water conditions, and to provide a uniform 2-3 day water age. The city’s Water District tried some submersible high HP large banana-blade mixers and found them to have serious problems, including major failures and extensive maintenance requirements associated with corrosion through the motor housing and the gearbox.
SolarBee Installation:
Date: March 2004: two (2) SB10000-PW units were installed, one in each compartment of the tank. July 2005, replaced existing units with 2 SB10000v12-PW units, and installed nine (9) SB10000v12-PW units in other tanks 10-27 MG in size. Additional installations of SB10000v12- PW units in other tanks of similar size: February-March 2006, eight (8) units; August 2006, two (2) units; February 2007, five (5) units, April 2007, four (4) units.
Results:
The SolarBees significantly improved mixing and resolved the maintenance issues with corrosion. Owner reported that improved mixing resulted in a significant reduction in the amount of chlorine needed for boosting (from about 1,000 down to about 200 gallons per month). Based on the performance of the two units tested and comparing the SolarBee performance results to the other types of equipment tried in the past, the LVVWD is in the process of adding SolarBees to all their potable water storage tanks, as well as specifying SolarBees for all new and future tanks. The city’s Water District is very pleased with the consistent, whole-tank mixing and the energy/economic savings achieved by using solar-powered circulators.
Dish and other components being assembled in tank.
Updated: 04/20/2007
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