Tracking systems

Definition

Tracking systems are mechanisms that allow solar collectors to follow the sun's path across the sky, maximizing the amount of sunlight captured throughout the day. By continuously adjusting their position, these systems enhance the efficiency of various solar technologies, including parabolic troughs, power towers, linear Fresnel collectors, and dish systems, ultimately improving energy output and reducing costs.

5 Must Know Facts For Your Next Test

1. Tracking systems can be classified into single-axis and dual-axis trackers, with dual-axis trackers providing greater efficiency by allowing movement along both vertical and horizontal axes.
2. Using tracking systems can increase energy production by 20% to 50% compared to fixed solar collectors, making them a valuable investment in solar technology.
3. The implementation of tracking systems is particularly beneficial in regions with high direct sunlight, as they optimize the angle of incidence for maximum energy absorption.
4. Tracking systems often come with added complexity in terms of installation and maintenance, which can influence overall project costs and feasibility.
5. In addition to traditional solar applications, tracking systems are also being researched and developed for use in solar thermal energy storage systems, enhancing their efficiency.

Review Questions

• How do tracking systems improve the efficiency of solar collectors compared to fixed installations?
  • Tracking systems significantly enhance the efficiency of solar collectors by following the sun's path throughout the day. This constant adjustment allows collectors to maintain an optimal angle of incidence for sunlight capture. Compared to fixed installations that remain stationary, tracking systems can capture more direct sunlight, leading to higher energy production rates.
• What are the advantages and challenges of implementing dual-axis tracking systems in concentrated solar power applications?
  • Dual-axis tracking systems offer substantial advantages by allowing collectors to adjust both vertically and horizontally, maximizing sunlight exposure throughout the day. This increased efficiency can lead to a significant boost in energy output. However, challenges include higher initial costs, more complex installation processes, and increased maintenance requirements, which can complicate project planning and budgeting.
• Evaluate the impact of geographic location on the effectiveness of tracking systems in different types of solar collectors.
  • The effectiveness of tracking systems varies greatly depending on geographic location due to factors like latitude, climate, and local weather patterns. In regions with high direct sunlight and minimal cloud cover, tracking systems can greatly enhance energy production across all types of solar collectors. Conversely, in areas with frequent cloudiness or lower solar irradiance, the benefits may diminish, making it crucial to assess local conditions when planning solar projects. This evaluation helps optimize investment decisions regarding tracking technologies.

Related terms

Azimuth angle: The horizontal angle between the sun's position and a reference direction, usually measured from true north.

Tilt angle: The angle at which a solar collector is tilted from the horizontal plane to optimize sunlight exposure.

Single-axis tracker: A type of tracking system that moves along one axis, typically either east to west or north to south, to follow the sun's movement.