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Solar Campus: Projects

LxCrop

In the heart of the Cidade Universitária, an end-of-life shipping container, LxCrop, has gained a new purpose: it has been transformed into a sustainable hydroponic growing laboratory. Inside this compact space, vertical shelves house plants that grow without soil, nourished by optimized solutions and illuminated by low-energy LED lamps. The great innovation of this urban laboratory lies in the reuse of treated wastewater, enriched with essential nutrients and synthetic microbial communities. Nitrogen-fixing microorganisms, phosphate solubilizers, and producers of phytohormones and growth factors work in symbiosis, ensuring the healthy development of plants and demonstrating new possibilities for implementing a circular economy.

By promoting local consumption and optimizing water and energy resources, this system reduces the carbon footprint of agricultural production. The result? Fresh, nutritious vegetables, produced directly where people live. This transformed container is more than a laboratory: it's a concrete example of how technology and science can revolutionize urban agriculture, making it more efficient, resilient, and accessible to all. A job that started with a project FCT (PTDC/ASP-HOR/29187/2017) and which continues to evolve with new challenges such as the fermentation of agricultural waste and the production of biomaterials.

Container of the lxcrop project

Container of the lxcrop project

Solar Chimney

The Solar Chimney project is a test laboratory for low-cost housing thermal insulation systems. It consists of an external test chamber with simple masonry walls and can be configured with various roofing and internal thermal insulation solutions.

This installation was used to test insulation solutions based on recycled materials with great ease of installation and different solutions to improve internal conditions, namely two low-cost DIY (do-it-yourself) strategies for roof insulation and two easy-to-implement natural ventilation devices.

Passive solar tracking

Prototype built by students Afonso Cardoso, Noa Estes, João Jorge and António Relógio, from Energy and Environmental Engineering. It consists of a passive solar tracking system with the objective of increasing the solar exposure of solar panels in a simple and low-cost way. Without motors and without being connected to electricity, the tracker follows the sun's apparent movement throughout the day, allowing for an increase of up to 25% in the solar radiation reaching the panels.

The accelerated video of the follower's movement over the course of a day shows that at daybreak the panel will be facing west, requiring some time to redirect to the east - the shorter the orientation time to the east, the greater the capture efficiency of radiation at this time of day.

Mirrored dish

Mirrored dish

Mirrored dish

Project of a parabolic solar concentrator completed in 3 parts. Started by students Ricardo Jónatas and Ricardo Pratas from Project in Energy and Environmental Engineering, who in 2009/2010 built the concentrator plate, it was again approached by students Bruno Oliveira and Filipe Nunes who developed the tracking algorithm and the structure of support in the year 2010/2011. Finally, in 2011/2012, students Henrique Garrido, Pedro Rosa and André Sousa gave life to the system through the inclusion of monitoring engines and the interconnection of the systems and their respective interfaces. The tests carried out showed that on the plate that marks the focus, temperatures above 500°C are reached and the efficiency of the system depends a lot on the mirror cleaning conditions.

Radon Measurement

It is a station for continuous monitoring of gamma radiation from the ground, in order to allow the study of the variability of radon gas concentration in relation to various meteorological parameters (such as temperature, precipitation, solar radiation, wind, pressure, humidity ) and other gases present in the atmosphere such as CO2. It consists of placing a tube vertically on the ground at both ends, in order to prevent the entry of moisture into its interior, as well as two thermocouples and an iButton sensor for recording the temperature and humidity, respectively, in the datalogger installed in an airtight case next to the tube.

Radon measurement

Radon measurement

Others

Peacoks

Peacoks

In addition to learning about our scientific projects, you can get to know the beautiful peacocks that roam freely around the campus!

Announcements

A Ciências ULisboa researcher publishes discovery on ruptures in cellular tissues