| Dependable as gravity and reliable as the heat from the sun, Track Rack improves photovoltaic module performance.
Track Rack from Zomeworks is a passive solar tracking system for photovoltaic modules, Since 1980, more than 5100 Track Racks have been installed in different climates on nearly every continent in the world. As dependable as gravity and as reliable as the heat of the sun, more than 99% of our trackers are still in operation today. Track Racks increase electrical output of photovoltaic modules by 25% or more compared to modules on fixed mounts. Track Rack passive solar trackers are a highly cost-effective component for domestic and industrial photovoltaic power systems, water pumping systems, cathodic protection systems, and utility applications. Tests conducted over a 12-month period by New Mexico State University showed an annual average improvement of 25% by tracking around an adjustable north-south axis compared with a fixed mount system. This means that using a 12-module Track Rack is like having an average of three extra modules for the year. |
|  ------------ Tracking mount, tilt 5o south, total output 338 watt-hours. - - - - - - - Fixed mount, tilt 5o south, total output 241 watt-hours. |
| The Zomeworks Track Rack is an ideal solution for photovoltaicpowered water pumping systems, for both domestic and agriculture applications, since it produces its greatest gain in electrical output during the summer months when water is most in demand. On cloudless, windless summer days, the Track Rack may improve performance by as much as
55%.
Simplicity and durability of the Track Rack design is unsurpassed. Track Racks are engineered for unmatched reliability and do not rely on drive motors, gears, clutches, high-tolerance pistons, electronics, batteries, or sun sensors. The Track Rack derives its tracking motion with a simple, elegant design that uses the sun's heat to move liquid through a sealed system integrated into its structure. As liquid moves from one side of the rack to the other, gravity causes it to rotate and follow the sun. In contrast to electro-mechanical tracking systems, the Track Rack eliminates high torque stress delivered near the frame's axle, relying instead on the modest weight differential applied by gravity as the systems liquid moves to the frame edges. And unlike bolt-together trackers, standard Track Racks have welded frames that will not loosen even after prolonged periods of wind buffeting. All Track Rack joints are welded or silver soldered, and none of the parts flex or bend. Because there is little to wear out, Track Rack passive solar trackers require virtually no maintenance beyond seasonal north-south axis adjustments, paint touch-up, and annual bearing lubrication. |
 The Track Rack begins the day facing west. As the morning sun rises in the east, it heats the unshaded west-side canister with both direct and reflected rays (from the inter surface of the "shadow plate") forcing liquid into the shaded east-side cannister. As liquid moves to the east-side canister, the tracker rotates so that it faces east. |
 The Track Rackis moved by the shifting weight of liquid flowing from one side of the tracker to the other through a copper tube that connects the east and west canisters. The movement of the liquid is controlled by the aluminum shadow plates. When one canister is exposed to the sun more than the other, its vapor pressure increases, forcing liquid to the cooler, shaded side. The shifting weight of the liquid causes the rack to rotate until the canisters are equally shaded. |
 As the sun moves, the Track Rack follows (at approximately 15o per hour, continually seeking equilibrium as liquid moves from one side of the tracker to the other. |
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| UTR020 -2.5" pipe For two modules: KC120, KC80, KC70, KC60, US64, US42 or 3 US32 Rack size: 67" x 36" x 6" (170 cm x 91 cm x 15.2 cm) UPS shippable 2 boxes 45 lbs (20.5 kg) & 50 lbs (22.7 kg) |
| UTR040 -3" pipe For four modules: KC120, KC80, KC70, KC60, US64, US42 or 6 US32 Rack size: 107" x 67" x 6" (271.8 cm x 170 cm x 15.2 cm) 2 boxes 25 lbs (11.4 kg) & 140 lbs (63.6 kg) |
| UTR055 -4" pipe For six modules: KC120, KC80, KC70, KC60, US64, US42 or 8 US32 Rack size: 107" x 99" x 6" (271.8 cm x 251.5 cm x 15.2 cm) 2 boxes 55 lbs (25 kg) & 180 lbs (81.8 kg) |
| UTR070 -6" pipe For eight modules: KC120, KC80, KC70, KC60, US64, US42 or fourteen US32 Rack size: 119" x 115" x 6" 2 boxes 80 lbs (38.6 kg) & 255 lbs (115.9 kg) |
