Author, as appears in the article.: Ayou, Dereje S.; Coronas, Alberto;

Department: Enginyeria Mecànica

URV's Author/s: Ayou, Dereje Sendeku / Coronas Salcedo, Alberto

Keywords: Water solutions Thermodynamic properties Technologies Solar cooling Small-capacity Refrigeration Plus lithium-nitrate Plate heat exchangers Performance Parametric analysis Ionic liquids Driving heat temperature glide Double-lift Bromide Air-cooled Absorption chillers

Abstract: At present, novel, small-to-large capacity absorption chillers with unique technical features have emerged on the global market, and laboratory and pre-industrial prototypes have also been developed. These chillers have been designed for the efficient use of low-grade heat sources; some are air-cooled, small capacity systems; compact water/LiBr chillers; or solar-gas-fired single/double-effect chillers. Also, some advanced commercial absorption chillers have an extensive temperature glide in the driving heat stream (>30 K) which extracts approximately twice as much heat (similar to 200%) as the single-effect chiller. This large temperature glide means that the chillers are well suited to solar thermal collector installations and district heating networks, and the extra driving heat increases cold production. Moreover, recent advances in R718 turbo compressor technologies have helped to solve the problems water/LiBr absorption chillers have in adapting to extreme operating conditions (e.g., high ambient temperature, >35 degrees C) by using a compressor-boosted absorption chiller configuration. This review paper presents and discusses the developments and progress in these absorption chiller technologies. In summary, the new absorption chillers may be useful for developing efficient, cost-effective, and robust solar cooling solutions that are needed to mitigate the unsustainable impact of the rising global demand for space cooling.

Thematic Areas: Química Process chemistry and technology Physics, applied Materials science, multidisciplinary Materials science (miscellaneous) Materials science (all) Materiais Instrumentation General materials science General engineering Fluid flow and transfer processes Engineering, multidisciplinary Engineering (miscellaneous) Engineering (all) Engenharias ii Engenharias i Computer science applications Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciências agrárias i Ciência de alimentos Chemistry, multidisciplinary Biodiversidade Astronomia / física

licence for use: https://creativecommons.org/licenses/by/3.0/es/

Author's mail: derejesendeku.ayou@urv.cat alberto.coronas@urv.cat

Author identifier: 0000-0002-6109-3680

Record's date: 2023-02-19

Papper version: info:eu-repo/semantics/publishedVersion

Link to the original source: https://www.mdpi.com/2076-3417/10/12/4073

Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/

Papper original source: Applied Sciences-Basel. 10 (12):

APA: Ayou, Dereje S.; Coronas, Alberto; (2020). New Developments and Progress in Absorption Chillers for Solar Cooling Applications. Applied Sciences-Basel, 10(12), -. DOI: 10.3390/app10124073

Article's DOI: 10.3390/app10124073

Entity: Universitat Rovira i Virgili

Journal publication year: 2020

Publication Type: Journal Publications