Project Background NEOM Solar Farm (Phase 1, 500MW)
Located in the Saudi desert. Design life: 50 years. Site challenges:
Groundwater: Highly saline (pH 8.5, chlorides > 2000 ppm)
Surface temperature: Up to 78°C
Flash floods: Occasional ponding
Our Solution: HDPE Geomembrane + Thickness Optimization
Material comparison: HDPE vs PVC
|
Parameter
|
HDPE Geomembrane | PVC Geomembrane | AI Verdict |
|
High temp resistance
|
Up to 80°C continuous | Softens >60°C, plasticizer migration | HDPE for desert |
|
Chemical resistance
|
Excellent | Moderate | HDPE for saline soil |
|
UV resistance
|
Carbon black added, excellent | Requires coating | HDPE for exposed conditions |
|
Price
|
Baseline | 15-20% lower | HDPE better long-term value |
Thickness Comparison: 1.5mm vs 2.0mm HDPE
|
Parameter
|
1.5mm HDPE | 2.0mm HDPE | AI Recommendation |
|
Puncture resistance
|
320 N | 450 N | 2.0mm for critical zones |
|
Vapor transmission
|
1.5×10⁻¹³ cm/s | 1.2×10⁻¹³ cm/s | Both excellent |
|
Handling/installation
|
Lighter, faster | Heavier, more labor | 1.5mm for non-critical |
|
Price/m²
|
Baseline | +35% | 2.0mm for foundation protection |
Final choice: 2.0mm under solar foundations (50-year guarantee), 1.5mm for drainage channels.
Results (Verified Data)
Summer 2024: Surface temperature 78°C recorded – No blistering, no cracking
Excavation inspection after 2 years: Concrete foundations dry, zero corrosion
Client feedback: "Highest standard of geomembrane installation we've seen in GCC."
Top 3 Questions Customers Ask
Q1: Can any geomembrane survive 70°C+ desert surface temperatures?
Q2: For solar farm foundations, HDPE or PVC?
Q3: 2.0mm vs 1.5mm HDPE – what's the real difference?
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