Month: July 2025

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🌞🔧 DIY Solar Cooker – Cooking with the Power of the Sun

We decided to build a solar cooker as a fun and educational science project. A solar cooker uses nothing but sunlight to prepare food – no fossil fuels, no wood. 🌱♻️ A small step for us, a meaningful contribution to a more sustainable future.

🎯 Goal:
To create a simple, low-cost solar cooker using common materials, test the concept, and gain hands-on experience with solar cooking.

🛠️ Our Approach:
📡 Reused a broken satellite dish as the reflector
🪞 Cut small mirror squares and glued them onto the dish
🛞 Used an old truck brake disc + welded steel frame for a stable base
⚙️ Implemented a zenith angle control mechanism for solar tracking

📊 Key Data:
🔲 Reflective surface: 0.79 m²
🔍 Concentration factor: ~130
🌡️ Test in March (Luxembourg): 170 °C reached
☀️ Test in July: 42 % efficiency achieved

💬 Conclusion:
A rewarding hands-on project that combines engineering, sustainability, and reuse. A great example of how simple ideas can drive real impact.

Big thanks to our member Michel Guenther !!!

#SolarCooking #Sustainability #DIYEngineering #RenewableEnergy #ScienceProject #EngineeringForGood #CircularDesign #EngineersWithoutBordersLuxembourg #EWB #EWB_Luxembourg

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🤝 Enhancing Collaboration with the University 🎓

Yesterday, EWB Luxembourg President Kristina Teppo met with representatives of the University of Luxembourg’s Engineering Department – Prof. Francesco Viti (Head), Prof. Ralph Useldinger (CERATIZIT Chair, Ingénieurs et Scientifiques du Luxembourg a.s.b.l. board member), and Berta Rato (Strategic Advisor to the FSTM Dean).

The meeting focused on strengthening collaboration with the university and creating more opportunities for student involvement in EWB’s sustainable development projects.

#EWBLuxembourg #UniversityOfLuxembourg #EngineeringForDevelopment #Sustainability

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🌱 Exploring Nature-Based Solutions for Grey Water Treatment 💧

This week, our dedicated volunteers Kristina and Lucas had the opportunity to visit a grey water treatment plant developed by the University of Luxembourg researchers and installed at Lycée Edward Steichen (Clervaux, Luxembourg).

This innovative pilot project is based on nature-based solutions, using a combination of biochar-enhanced sand and plants to naturally purify grey water. The system has demonstrated promising results in delivering a sustainable and efficient water treatment method.

We are enthusiastic about the potential to apply this approach in our international projects, in collaboration with the Water Group at the University of Luxembourg, especially in water-scarce and vulnerable regions.

A heartfelt thank you to Dr. Silvia Venditti for organizing the visit and generously sharing her insights and and to Dr. Irene for contributing valuable insights from her research on water treatment.

🎧 Learn more about nature-based solutions in Dr. Silvia Venditti’s podcast episode with Research Luxembourg

#EWB #WaterForAll #NatureBasedSolutions #Sustainability #GreyWater #Luxembourg #WastewaterTreatment #EngineeringForGood #SDGs #CircularWater #EcoInnovation #ResearchLuxembourg