Rapid tree-seed drying and viability-preservation technology
The Solar Heat Storage for Drying Forest Tree Seeds (SoFTS) is a 100% solar-powered, renewable energy system developed by Brunel University London. It replaces costly, energy-intensive electric drying methods, reducing seed processing time from six weeks to approximately four days. By utilizing nanomaterial-enhanced heat storage, the system provides autonomous, off-grid operation, supporting sustainable reforestation by significantly increasing seed production capacity and eliminating carbon emissions.
Overview
The Solar Heat Storage for Drying Forest Tree Seeds (SoFTS) is an innovative, 100% solar-powered drying system developed by researchers at Brunel University London. Designed to address energy-intensive and time-consuming traditional seed drying methods, this system streamlines the production of forest pine tree seeds, supporting large-scale reforestation efforts. By replacing conventional electric heaters with renewable solar thermal energy, the technology eliminates associated energy costs and carbon emissions, providing a sustainable, off-grid solution for agricultural and forestry processing.
Technical specifications
The SoFTS system features a custom-designed, non-tracking, low-concentrating solar thermal collector that generates heat ranging from 60 to 80 °C. Key technical capabilities include:
- Nanomaterial-enhanced heat storage: Uses locally available materials to store thermal energy.
- Extended operation: Advanced sensors monitor pod temperature, allowing the system to store surplus heat for overnight use, ensuring consistent drying for at least 1.5 days, even during cloudy conditions.
- Efficiency: Reduces seed drying time from approximately six weeks to three or four days.
- Scalability: The system is a bespoke solution capable of being scaled for various industrial or agricultural applications.
Technology readiness level
The technology is at TRL 7. A prototype system was successfully designed, manufactured, and installed by the project team at the Kenya Forestry Research Institute (KEFRI) Muguga plant in August 2021. Following a six-month evaluation period, the system proved its capability to operate reliably and effectively, with KEFRI planning to expand the technology to additional nationwide seed plants.
About Brunel University London
Brunel University London is a comprehensive public research university in West London with a campus-based community and an applied, industry-engaged ethos. Co-located labs and a science park adjacent to campus provide space for collaborative R&D, while proximity to Heathrow and major transport links makes partnering and pilot deployment straightforward. A strong placement tradition and professional practice pathways connect companies with student and alumni talent for internships and recruitment. Research is backed by competitive funding from UK Research and Innovation councils and Innovate UK, with additional support from national health research bodies. A dedicated technology transfer office manages IP, licensing, and spinouts, and enterprise programs support SMEs and corporate innovation.
delivered to your inbox.