1. What is this item?

Incorporates solar air collectors and fans to push heated air through drying tunnels, cutting drying time in half.

2. How is the quantity estimated?

Collector area sized to produce ~200 m³/h of hot air per 100 sq ft of drying bed.

3. Cost components:

– Solar air heater panels (₹2,000–3,000/m²)

– Blower fan & ducting (₹20,000–30,000)

– Insulated drying tunnel

4. Going rates & unit cost:

– Air collectors: ₹2,000–3,000/m²

– Blower & duct: ₹20,000–30,000 total

– Tunnel framing/cover: ₹300–400/sq ft

– Total (~200 sq ft bed): ₹4–6 Lakh