Für den Inhalt der Angaben zeichnet die Projektleitung verantwortlich.
Dieses von der Gebert Rüf Stiftung geförderte Projekt wird von folgenden weiteren Projektpartnern mitgetragen: Hochschule Luzern, Institute of Mechanical Engineering and Energy Technology, Competence Centre Thermal Energy Storage
Project no: GRS-046/18
Amount of funding: CHF 148'000
Duration: 09.2018 - 08.2019
Area of activity: First Ventures, seit 2018
8003 Zürich (Schweiz)
- remo.waser@hslu. ch
Efficient production of cold is a topic of increased attention since the worldwide cooling demand is increasing. To increase efficiency as well as the ability of integration of renewables, storage technologies are necessary. Cold storages allow for a decoupling of supply and demand and enable to produce cold when it is most efficient. However, current storage solutions have low energy densities resulting in large space requirements and hence high costs. Within the project 'ColTES', a latent thermal energy storage device for cooling applications will be developed which uses a liquid/solid phase change of the storage material to store thermal energy. The technology offers an up to factor four higher energy density than existing water storage solutions. The proposed storage is based on phase change material capsules, arranged in a packed bed, which leads to a high scalability, modularity and flexibility. With the new funds, a prototype of the system will be developed and tested. The described business case will be further specified, related business opportunities will be identified and industrial partnerships will be formed. Finally, follow-up financing will be acquired for the installation of a pilot plant.
What is special about the project?
The proposed storage solution is compact, scalable, simple and modular and allows for the production of cold when it is most efficient (e.g during night) and provide it when needed. Consequently, considerable energy and costs savings results for the end user.
Numerical computer models of the capsule-based storage have been developed which allow for an optimal design of the capsules (shape, volume). A basic capsule shape and the phase change material, a eutectic mixture of two salt-hydrates with a melting temperature of 15°C were identified. Capsule prototypes are being tested at thermal lab of HSLU.
M. Berger and R. Waser, «Advanced latent thermal energy storage for space cooling in the tropics», IEEE PES GTD Asia 2019, 2019;
R. Waser et al., «Fast and experimentally validated model of a latent thermal energy storage device for system level simulations», Appl. Energy, vol. 231, pp. 116–126, 2018;
Ghani, Faisal; Waser, Remo; O'Donovan, Tadhg; Schütz, Philipp; Zaglio, Maurizio & Worlitschek, Jörg (10.02.2018). «Non-linear system identification of a latent heat thermal energy storage system». Applied Thermal Engineering, 585-593.
Persons involved in the project
Last update to this project presentation 14.08.2019