Low maintenance solar tracker actuators suited to the Australian climate
Low maintenance Air stroke actuators from Firestone provide a compact and easily installed way to continuously orient solar trackers’ payload towards the sun to optimize the amount of energy produced from installed power generating capacity. The rubber and fabric actuators – distributed throughout Australia by Air Springs Supply Pty Ltd – can be used to solve the problem of stationary solar collection panels becoming inefficient as the sun shifts from a 90-degree angle to the panels. Usually inflated or deflated by standard fixed or mobile compressed air (typically 7 bar (100 psi), they move photovoltaic systems to minimize and angle of incidence between the incoming sunlight and a photovoltaic array. Alternatively, an ingenious actuation alternative uses the expansion and contraction of Freon gas as it is heated and cooled within the actuators to extend and retract them and change the angle of the collection panels. “Airstrokes are particularly beneficial for commercial installations, where continuous focusing of the arrays through single or dual-axis arrangements enhances energy returns. Such installations – sometimes in remote locations and subject to climatic extremes over 24 hours – need extremely reliable actuators to continuously reposition payloads such as solar panels, reflectors, mirrors or lenses,” says Air springs Supply Sales and Marketing Manager Mr James Maslin. Airstroke bellows offered by for use by solar engineers and installers have been proven in widespread heavy duty industrial actuation throughout Australia, including providing millions of cycles of service on conveyors and mineral processing screens and vibrators, where they have to withstand dust, heat, moisture and extremes of Outback climate. “They are identical in construction to the airbags proven in truck and train suspension so they are extraordinarily tough. In addition to having no internal rods of seals to wear – unlike conventional metal cylinders – they have the ability to […]