Description du projet
Améliorer l’efficacité énergétique des serres
L’agriculture sous serre et les systèmes de récupération d’eau à forte intensité énergétique ont besoin d’applications innovantes pour réduire leur consommation d’énergie. Le projet TheGreefa, financé par l’UE, propose une nouvelle technologie pour le chauffage, le refroidissement, le contrôle de l’humidité de l’air et la récupération de l’eau dans les serres ainsi que pour le séchage des produits agricoles, en utilisant des principes de conversion thermochimique (fluides dessicants). Ces fluides absorbent la vapeur d’eau de l’air, convertissant la chaleur latente en chaleur sensible. La force motrice nécessaire à ces processus est la chaleur à basse température, par exemple la chaleur solaire ou la chaleur résiduelle. Les fluides stockent et transportent le potentiel thermochimique sans aucune dégradation: cette technologie permet un stockage et un transport sans perte. Le projet poursuivra le développement et la démonstration de cette solution novatrice en la testant dans différentes conditions climatiques européennes.
Objectif
This project is aimed at a new technology for heating, cooling, air humidity control and water recovery in greenhouses as well as for drying of agricultural goods using thermo-chemical conversion principles based on the use of salt solutions (thermochemical fluids). The common effect in all applications is the hygroscopic property of thermochemical fluids, allowing an uptake of water vapor from air thus releasing sensible heat involved in the phase change. The technology allows to (1) use unexplored potentials of solar- and residual heat at farm level, (2) to convert and to store the heat into thermochemical potential without thermal losses and (3) to use the potential through re-conversion of the potential into heat within the above-mentioned applications. Within two different demonstrators in Central European Climate (heating) and Mediterranean Climate (cooling, water recovery and desalination) the technology will be tested, further developed and disseminated. Lab tests will explore the processes and materials involved, will include tests on material drying and on interactions between different applications. Development of improved knowledge on modelling of the involved processes, the simulation and control of specific applications and the development of control strategies are further tasks to provide a bright insight into the novel approach. Strategies to bring the technology to market will be developed. Thermochemical applications in agriculture have the potential to significantly reduce the energy consumption in greenhouse climate control as well as in crop drying and will provide an alternative to energy intensive water desalination in arid regions. The uptake, conversion and storage of solar heat from greenhouses even provides the perspective to turn protected intensive horticulture from an energy/water consuming to an energy/water producing method, allowing to secure the important market of food production and food processing and to extend it to new regions.
Champ scientifique
Mots‑clés
Programme(s)
- H2020-EU.3.2. - SOCIETAL CHALLENGES - Food security, sustainable agriculture and forestry, marine, maritime and inland water research, and the bioeconomy Main Programme
- H2020-EU.3.2.1.1. - Increasing production efficiency and coping with climate change, while ensuring sustainability and resilience
- H2020-EU.3.2.1.2. - Providing ecosystems services and public goods
Thème(s)
Régime de financement
IA - Innovation actionCoordinateur
8401 Winterthur
Suisse