Passive solar greenhouse results & feedback
We present the results and feedback from producers for different crops grown in various passive solar greenhouses across different climates.
A) Tunnel
- Location: 26 300 Chatuzange-Le-Goubet, Drôme, Auvergne-Rhône-Alpes region
- Altitude: 240 m
- Greenhouse type: Single-wall tunnel, 8 m wide
- Insulation: Double P30 on frost cover, removed during the day and put back at night
- Type of production: Diversified market gardening
- Thermitube: Single and double Thermitube per row
Simple : green beans
Double : tomatoes and zucchinis
Here is the graph showing the ThermiTube results at the beginning of the crop with 2 frost covers ( P30 g/m²) :
2) Drôme: tomato and Mediterranean vegetables in tunnel with one P17 as screen
- Location: Granges-les-Beaumont, Drôme, Auvergne-Rhône-Alpes region
- Altitude: 150 m
- Greenhouse type: frost cover
- Insulation: P17 for 15 days and one P17 as screen
- Type of production: Single and double Thermitube per row
- Thermitube: Single and double Thermitube per row
3) Paris Belt: tomatoes and Mediterranean vegetables in a tunnel
- Location: 95 300 Livilliers, Val-d’Oise, Île-de-France region, Paris
- Altitude: 110 m
- Greenhouse type: bi-tunnel
- Insulation: P17 frost cover
- Type of production: Tomatoes and Mediterranean vegetables
- Partnership: Chamber of Agriculture of Île-de-France – Market Gardeners’ Circle
B) Multispan
1) Provence-Alpes-Côte d'Azur (PACA)
- Location: 13 310 Saint-Martin-de-Crau, Bouches-du-Rhône, PACA region
- Insulation: P17 on caterpillar tunnel
- Type of production: Tomatoes
2) Alps
- Location: Seynod / Annecy – French Alps
- Altitude: 575 m
- Greenhouse type: Multispan with double inflatable and plastic cover
- Insulation: P17 frost cover
- Type of production: Tomatoes
- Thermitube system: Double Thermitube per row
Surface area : 1,600 m²
Heating savings: No longer using fuel oil (previously 2 L/m² at 5 °C)
