Skip to main content
Article thumbnail
Location of Repository

System development and studies on utilization of concentrated solar beam radiation for polymer processing

By Lou A. Stoynov


Various solar energy technologies are being developed to harness the available environmentally friendly and sustainable solar radiation. New ways of utilizing this "free" power for different energy consuming processes continue to be created. In this thesis, a multi-stage solar energy concentrating system has been developed and its feasibility as a radiation source for polymer processing has been explored. The solar energy concentrator (SEC) facility comprises a modified Cassegrainian configuration combined with auxiliary imaging and non-imaging optics, serving as an alternative energy source for polymer joining, ageing and adhesive curing. Modeling and improvement of various aspects of the operation and performance of the SEC facility have been implemented. Optical ray tracing models of the Cassegrainian concentrator with various conventional imaging components and nonimaging concentrators have been created to optimize the optical layout and system efficiency. On their basis, combined 3D ray tracing computer models integrated with the mechanical components have been developed to simulate the entire SEC facility and predict the image size, location and orientation. Additionally, the energy transfer, radiation absorption and heat generation and transfer in the irradiated polymer have been modeled in order to study the radiation-polymer interaction. One novel contribution of this research is the enhancement of the image forming concentrator with non-imaging cone-like concentrators (conical and compound parabolic concentrator (CPC)), utilizing their inherent disadvantage of excessive length. Compared to the refractive type means of transmitting concentrated solar radiation, the truncated cone and CPC concentrators have been found more efficient enhancing further the concentration and widening the utilized spectral range. The experimental studies have demonstrated that transparent and colored, similar and dissimilar polymers can be successfully joined using the SEC facility. The especially developed through-transmission technique removes the need to use a special absorbing medium of the radiant energy required by current advanced welding techniques. The tensile strengths of the joints achieved are comparable to those achieved for similar polymers with other advanced plastic joining methods. The results from the polymer ageing experiments have shown that ultraaccelerated exposure to concentrated sunlight can be performed with the SEC facility without introducing spurious failure mechanisms. Based on the preliminary investigation on adhesive curing utilizing concentrated solar radiation, it has been concluded that with carefully chosen light-curing adhesives solar radiation can be a useful radiation source for adhesive curing

Topics: accelerated outdoor ageing, cassegrainian concentrator, solar radiation, thermoplastic joining
Publisher: Queensland University of Technology
Year: 2006
OAI identifier:

Suggested articles


  1. (1977). American Society of Heating, Refrigerating and AirConditioning Engineers.
  2. (1145). Determination of Tensile Properties of Plastic Materials. Part 1: General Principles. Homebush,
  3. (1886). Glossary of Terms Relating to Plastics. Homebush,
  4. (1745). Outdoor Weathering of Plastics in the Australian Environment, Part 1: Commercial Products. Homebush,
  5. (1745). Outdoor Weathering of Plastics in the Australian Environment, Part 2: Guide for Design Purposes. Homebush,
  6. Safety in Laboratories - Non-ionizing Radiations -Electromagnetic, Sound and Ultrasound. Homebush,
  7. Solar Collectors with Liquid as the Heat Transfer Fluid Method of Testing Thermal Performance. Homebush,
  8. Solar Constant and Zero Air Mass Solar Spectral Irradiance
  9. Standard Practice for Preparation of Plastics Prior to Adhesive Bonding, American Society for Testing and Materials.
  10. (1998). Standard Symbols for Heat Transmission, American Society for Testing and Materials.
  11. (2000). Standard Terminology of Adhesives, American Society for Testing and Materials.
  12. (2000). Standard Terminology of Appearance, American Society for Testing and Materials.
  13. (1988). Standard Terminology Relating to Molecular Spectroscopy, American Society for Testing and Materials.
  14. (2000). Standard Terminology Relating to Plastics, American Society for Testing and Materials.
  15. (2000). Standard Terminology Relating to Thermal Analysis, American Society for Testing and Materials.
  16. (1002). Standard Test Method for Apparent Shear Strength of SingleLap-Joint Adhesively Bonded Metal Specimens by Tension Loading (Metal-toMetal), American Society for Testing and Materials.
  17. Standard Test Method for Determining Strength of Adhesively Bonded Rigid Plastic Lap-Shear Joints in Shear by Tension Loading, American Society for Testing and Materials.
  18. (2000). Standard Test Method for Index of Refraction of Transparent Organic Plastics, American Society for Testing and Materials.
  19. (1993). Standard Test Method for Solar Energy Transmittance and Reflectance (Terrestrial) of Sheet Materials, American Society for Testing and Materials.
  20. (1084). Standard Test Method for Solar Transmittance (Terrestrial) of Sheet Materials Using Sunlight, American Society for Testing and Materials.
  21. Standard Test Method for Transition Temperatures of R-2 Polymers By Differential Scanning Calorimetry, American Society for Testing and Materials.
  22. (1979). Two-mirror Unit Plane and Hyperboloidal Counter-Reflectors.

To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.