Frequently asked questions

ECO SOLAR LLC – Shtip

1. What is a Solar Air Collector?

A solar air collector is a device that captures solar energy and converts it into heat by warming air, which is then used directly for space heating or product drying.

2. How does the system work?

Solar radiation passes through a transparent cover (typically glass or polycarbonate) and heats the absorber surface. Air flowing through or beneath the absorber absorbs this heat and is then delivered by a fan to the area requiring heating or drying.

3. What are the main types of Solar Air Collectors?

There are two main types:

Single-pass solar air collectors
Double-pass solar air collectors

4. How much installation space is required?

The required space depends on the system capacity and heating demand.

For solar dryers, collectors are typically installed on a supporting structure in front of the drying chamber.
For building heating, collectors are mounted directly on the south-facing wall or on the roof.

5. Can the collectors operate during winter?

Yes. As long as sunlight is available, the system operates even at very low outdoor temperatures. Daily energy production is naturally lower during winter because of the shorter daylight hours.

6. Can the system be combined with electric heating or drying systems?

Absolutely. Solar air collectors are commonly combined with electric heaters or other conventional heating systems to ensure continuous operation during periods without sunshine.

7. How much does a Solar Air System cost?

The price depends on the collector size and system configuration.

A 2 m² solar air collector costs approximately €270 (+5% VAT for thermal collectors).
The smallest complete system (including fans, controller, and air ducts, excluding installation) starts at approximately €790.

8. What is the expected service life?

With proper maintenance, a solar air collector has a service life of more than 15 years.

The transparent polycarbonate (Lexan) cover comes with a 10-year UV protection warranty and offers excellent resistance to hail impact.

9. Does the system require regular maintenance?

Maintenance requirements are minimal.

Only occasional cleaning of dust and dirt from the transparent cover (glass or polycarbonate) is required, along with periodic inspection of the air filters and fans.

10. What applications are suitable for Solar Air Collectors?

Drying fruits, vegetables, mushrooms, herbs, and timber
Heating and ventilating homes, garages, workshops, warehouses, and industrial halls
Preheating process air for industrial applications

11. How energy-efficient is the system?

The average thermal efficiency ranges from 50% to 60%, depending on the collector design, material quality, and current solar conditions.

Aplication

🏠 **Homes, Basements & Garages**
*"Natural heating, efficient ventilation, and continuous air drying for a healthier indoor environment in your everyday living spaces."*
🏨 **Hotels, Swimming Pools & Sports Halls**
*"Continuous fresh air circulation and dramatically reduced humidity for maximum comfort, hygiene, and healthier indoor environments."*
🏭 **Industrial Facilities (Textile & Food Processing)**
*"Powerful ventilation, rapid dehumidification, and accelerated material drying for cost-effective optimization of industrial production processes."*
🌱 **Agricultural Product Drying**
*"Uniform and cost-effective drying of fresh fruits, vegetables, mushrooms, and herbs using **100% free and clean solar energy**."*

How the system works

🌀 **Cool Air Inlet**
*"Air from the room is continuously drawn into the solar collector."*
Cool, moisture-laden air, which naturally settles in the lowest part of the room due to its higher density, is continuously drawn into the system. This initial process is carried out by a quiet, energy-efficient fan that ensures constant air circulation while preparing the stale air for effective filtration and thermal treatment.

🔆 **Solar Absorber**
*"Free solar energy is efficiently converted into heat, warming the air."*
At the heart of the system is a high-efficiency solar absorber designed to capture the maximum amount of solar radiation. As the air passes through the specially engineered internal channels of the collector, it is intensively heated using **100% free and clean solar energy**, reaching a temperature significantly higher than the outdoor air.

💨 **Warm Air Outlet**
*"Filtered, dry, and heated air is returned to your indoor space."*
Before re-entering the building, the heated air passes through an advanced filtration system that captures dust and airborne pollutants. The continuous supply of this warm, clean, and dry air creates a healthy indoor climate while maintaining a slight positive air pressure that effectively forces excess moisture, unpleasant odors, and mold spores out of the space.