Long-term solar heat storage process by absorption with the KCOOH/H2O couple: Experimental investigation. (15th December 2017)

• Record Type: Journal Article
• Authors: Le Pierrès, Nolwenn; Huaylla, Fredy; Stutz, Benoit; Perraud, Julien
• Is Part Of: Energy. Volume 141(2017)
• Page Start: 1313
• Page End: 1323
• Publication Date: 2017-12-15
• Subjects: Heat storage -- KCOOH/H2O -- Absorption -- Solar heat -- Building; Power resources -- Periodicals; Power (Mechanics) -- Periodicals; Energy consumption -- Periodicals; 333.7905
• DOI: 10.1016/j.energy.2017.10.111
• Languages: English
• ISSNs: 0360-5442

Abstract

Abstract: This paper presents experimental results obtained with a prototype of a solar heat storage absorption process using the KCOOH/H2 O couple. The process principle and the prototype tested are described, and both charging and discharging results are presented and discussed. The parameters influencing the results the most are water and solution flow on the reactor heat exchangers as well as the heat source and sink temperatures. The system's main limitation is the wetting of the exchanger plates. However, the tests prove the interest of the KCOOH/H2 O couple in this type of low-temperature heat storage process. Highlights: A long-term solar absorption heat storage prototype was constructed and tested. Experimental results with the KCOOH/H2 O couple are presented and analyzed. The feasibility of interseasonal storage for building heating with KCOOH/H2 O is proven.