Abstract
In this work, the first experimental results of thermotropic liquid crystals used as phase change materials for thermal storage are presented. For that purpose, the n = 10 derivative from the family of 4-n-alkoxybiphenyl-4-carboxylic acids has been prepared. Different techniques like polarized-light microscopy, differential scanning calorimetry, thermogravimetric analysis and rheological measurements have been applied for its characterization. Having a mesophase/isotropic transition temperature around 251 degrees C, a clearing enthalpy of 55 kJ/kg, a thermal heat capacity of around 2.4 kJ/kg and a dynamic viscosity lower than 0.6 Pas, this compound fulfills the main requirements for being considered as latent heat storage material. Although further studies on thermal stability are necessary, the results already obtained are both promising and encouraging since they demonstrate de viability of this new application of liquid crystals as thermal storage media.
Original language | English |
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Article number | 121 |
Journal | unknown |
Volume | unknown |
Issue number | 5 |
DOIs | |
Publication status | Published - May 2016 |
Keywords
- thermal storage
- liquid crystals
- phase change materials
Project and Funding Information
- Project ID
- info:eu-repo/grantAgreement/EC/FP7/609837/EU/Scientific and Technological Alliance for Guaranteeing the European Excellence in Concentrating Solar Thermal Energy/STAGE-STE
- Funding Info
- The authors would like to acknowledge the E. U. through the 7th FP for the financial support of this work under the STAGE-STE Project (Ctr. Nr. 609837), the Community of Madrid for its support under the ALCCONES Project (S2013/MAE-2985) through the Program of R&D activities between research groups in Technologies 2013 and the Spanish government in the framework of the DETECSOL project (Ref. ENE2014-56079-R) both co-financed by ERDF funds, the Spanish Ministry of Economy and Competitiveness through the Project with ref. CTQ2014-52796-P and the Community of Castilla y Leon through the Project with ref. VA302U13.