Solar Water Heating Project At Princess Wencheng Star Domain In Lhasa

Against the backdrop of Tibet’s promotion of "tourism + ecology" integrated development, Lhasa’s "Princess Wencheng Star Domain" – a renowned local scenic spot – combines Tibetan cultural experiences and plateau starry landscapes with green, low-carbon operations. With high daily visitor numbers, the spot has strong hot water demand for accommodation, catering and public services. Traditional electric/gas heating is energy-intensive, costly and conflicts with plateau ecological protection. To address this, the scenic spot partnered with Tibet SOLETKS, adopting 100-tube manifold vacuum tube collectors (developed for engineering scenarios by Feitian New Energy, a SOLETKS Group subsidiary). Coordinated operation of 77 sets builds a clean hot water system with 40 tons/day capacity, setting a model for green plateau scenic spot operations.

Lhasa, on the Qinghai-Tibet Plateau (average altitude 3,650 meters), has exceptional solar resources: annual sunshine exceeds 3,000 hours, with solar radiation far stronger than plain areas – ideal for solar water systems. However, plateau conditions (15-20℃ daily temperature difference, -10℃ winter lows, strong UV from thin air) demand high cold resistance, weather resistance and UV resistance from solar equipment. Ordinary collectors fail here (efficiency loss, freezing cracks, accelerated aging). Feitian New Energy’s 77 sets of 100-tube collectors solve this via dual guarantees of performance and quantity.

As a core SOLETKS subsidiary focusing on engineering-specific collector R&D and production, Feitian New Energy has years of engineering experience. Its 100-tube collectors are known for "high adaptability, stability and durability," proven in extreme environments. The 77 sets for this project have three plateau-specific optimizations:

• Cold resistance: 1.8mm-thick borosilicate 3.3 vacuum tubes (no cracks after -30℃ freeze-thaw tests). Manifolds have intelligent anti-freeze circulation; 77 sets link via unified control, activating heating when below 5℃ to prevent pipe freezing.

• Heat collection efficiency: Self-developed "high-efficiency coating" (96% solar absorption, <4% heat emission) maintains stability under strong UV, no fading/aging. The 77-set "heat collection matrix" maximizes solar use.

• Durability: 304 stainless steel manifold shells (UV-resistant coating) last over 15 years. Modular design allows flexible layout, meeting 40 tons/day demand with easy installation/maintenance.

In operation, the system stably produces 40 tons of hot water daily (55-60℃), covering 200+ guest rooms, 3 catering areas and 2 public bathrooms. Instant hot water eliminates "long waits, temperature fluctuations" of traditional heating. The scenic spot’s operation director noted: "Hot water stability improved significantly; complaints dropped over 90%. Annual electricity savings reach 280,000 yuan vs traditional electric heating, with over 4 million yuan saved over 15 years."

Ecologically, the system replaces traditional energy with solar via 77 collectors: 140 tons of standard coal, 350 tons of CO₂ and 11 tons of SO₂ saved yearly – equivalent to 19,000 trees planted. The 77-set "silver array" blends with Tibetan architecture and plateau landscapes, becoming a "green energy scenic line" to convey ecological concepts.

This project showcases Tibet SOLETKS’s cooperation success and Feitian New Energy’s engineering collector strength. The "professional R&D + localized service + large-scale configuration" model solves plateau scenic spot pain points, aligns with national "dual-carbon" goals and provides a replicable clean energy plan for plateau/alpine scenic spots. Future Feitian New Energy innovations and Tibet SOLETKS’s local focus will bring clean solar solutions to more plateau projects, driving Tibet’s tourism industry toward "ecological, economic and social win-win."