Integration of particulated encapsulated phase change materials in a conventional flat-plate solar collector for the production of domestic hot water
Integrating encapsulated phase change materials (PCMs) beneath flat-plate solar collectors enhances thermal performance in compact units for efficient domestic hot water production. This innovative approach optimizes heat transfer, prevents leakage, and ensures reliable operation, offering a streamlined solution for sustainable hot water systems.
Background
Encapsulated PCMs in particulated form address several technical limitations in LHS compartments of solar collectors for domestic hot water production:
- Increased heat transfer area due to contact area with encapsulation media.
- Enhanced thermal conductivity.
- Reduced reactivity and corrosion effects between PCM and container.
- Lower risk of leakage or spillage during maintenance or system failure, as PCM remains solid due to encapsulation..
- Controlled volume change of storage materials during phase transition.
Technology Overview
Our innovation involves using encapsulated phase change materials (PCMs) in particulated form to fill the thermal storage tank of flat-plate solar collectors for domestic hot water production. These encapsulated PCMs, either microencapsulated or shape-stabilized, come in powder form with particle sizes of 5mm and under, ensuring effective filling and improved contact with the integrated heat exchanger. This enhances the efficiency of flat-plate solar collectors, making them more effective for domestic hot water production.
Stage of Development
Today, the invention is in TRL* 3, with the next steps being:
- Commercialization plan
- Contacts with potential customers
- Participation in Trade Fairs, Patent Brokers, Technology Brokerage Events (Barcelona – Archimedes) and Conferences
Benefits
- Enhanced PCM integration in solar collector storage tanks for hot water production.
- Improved PCM placement for uniform distribution.
- Simplified on-site maintenance.
- Increased heat transfer area and improved thermal conductivity.
- Reduced reactivity and corrosion risks.
- Minimized leakage/spillage risks due to solid-state encapsulation.
Applications
Such solar energy storage systems integrating Latent Heat Storage systems can be used as thermal batteries, for solar cooling or heating buildings, fish farms, greenhouses, off grid, non-stationary units requiring thermal management, cooking purposes etc.
Opportunity
National & Kapodistrian University of Athens is seeking partnerships for commercialization of the technology.
Patents
IP Status
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Seeking
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