Photothermal-coated fabric panels developed in the USA can provide up to 23% savings in buildings. Moreover, their plug-and-play structure and low cost are expected to make them highly accessible.
Preventing heat loss in buildings continues to be one of the most critical aspects of increasing energy efficiency. Until now, solutions developed for this problem have mostly revolved around insulation systems, double-glazed windows, and extensive renovation projects. However, the high cost of these methods and their difficulty in being easily applied to every structure are directing researchers to develop more practical and accessible alternatives.
A new approach developed by a research team from the University of Massachusetts Amherst in the USA stands out as a remarkable example of this quest. Researchers have developed a system that allows interior spaces to stay warmer through fabric panels added to the exterior surface of buildings. These panels, coated with photothermal paint, absorb sunlight and convert it into heat, thus adding a thermal layer to the building's facade. The heated panels transfer the generated heat directly to the building surface, allowing it to be transferred through the wall to the interior.
Furthermore, this system operates entirely passively; it benefits solely from sunlight without requiring any electricity or additional energy source.
Low-Cost Fabrics Are Sufficient for Coating
The working principle of this system is quite simple yet effective. Just as people put on a sweater when they are cold, these panels added to the exterior of buildings reduce heat loss. The research team initially worked on a blanket-like covering but later shifted to removable and attachable modular panels. The most striking feature of these panels is that they do not require expensive materials. Researchers state that photothermal paint can be applied to different surfaces and that they used very low-cost materials like durable umbrella fabric in their tests.
Can Provide Up to 23% Energy Savings in Large Apartment Buildings
According to modeling results, these panels can increase the indoor temperature by approximately 4.8°C within a day. This directly reduces heating needs, leading to significant energy savings. Data shows that the system can provide up to 15% heating energy savings in detached houses and up to 23% in large apartment buildings. These rates indicate higher efficiency than most traditional renovation methods.
One of the significant advantages of this technology is its accessibility. While existing solutions often require high costs and permanent changes, these panels offer a suitable alternative, especially for tenants, thanks to their lightweight, portable, and removable structure. This removable design also allows the panels to be used specifically during winter months and easily removed in summer to prevent overheating. Furthermore, the ability to produce them with different design and color options means that these panels can adapt aesthetically to various architectural styles.
For now, this technology is still in its early stages, but the initial results are quite promising. Researchers state that the system needs to undergo more comprehensive testing under real-world conditions before being commercialized. Factors such as durability, weather resistance, and long-term energy savings will determine how widespread these panels become in the future. However, at first glance, this idea looks very promising.
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