Quick Answer
To set up a solar tracking system for off-grid AC, you'll need a solar array, a tracking system, an inverter, and a DC air conditioner. The tracking system will follow the sun's movement to maximize energy production.
System Components and Configuration
To effectively power an off-grid AC, you’ll need a DC air conditioner rated for the desired cooling output and a suitable solar array. A 10 kW DC air conditioner, for example, requires around 25-30 square meters of solar array to produce 30 kWh of energy per day. The solar array should be sized to produce 20-30% more energy than the AC’s rating to account for inefficiencies and varying sunlight.
Tracking System Selection
Choose a solar tracking system that can accurately follow the sun’s movement and adjust to seasonal changes. A single-axis tracker is suitable for most off-grid AC applications, but dual-axis trackers offer even more efficiency gains. Consider a tracker with a maximum tilt angle of 70 degrees and an azimuth range of 360 degrees.
System Sizing and Installation
When sizing your solar array, calculate the total energy required to power the AC, including startup and running losses. A general rule of thumb is to size the system for the AC’s nameplate rating plus 20-30%. For a 10 kW DC air conditioner, this would translate to a 12-15 kW solar array. Ensure proper installation of the tracking system, solar array, and electrical connections to prevent damage or electrical shock.
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