A characteristic mass fraction difference in absorption chillers. (January 2019)

• Record Type: Journal Article
• Authors: Meyer, T.; Ziegler, F.
• Is Part Of: International journal of refrigeration. Volume 97(2019)
• Page Start: 67
• Page End: 72
• Publication Date: 2019-01
• Subjects: Mass transfer -- Absorption -- Characteristic equation -- Chiller; Transfert de masse -- Absorption -- Équation caractéristique -- Refroidisseur; Refrigeration and refrigerating machinery -- Periodicals; 621.56
• DOI: 10.1016/j.ijrefrig.2018.09.021
• Languages: English
• ISSNs: 0140-7007

Abstract

Highlights: Mass fraction difference as the driving force for the mass transfer. New variable to fit experimental data for absorption chillers. Linear relation of cooling capacity to mass fraction difference. Less deviation compared to characteristic temperature function. Abstract: Absorption chillers are considered as heat transfer devices and hence most commonly modeled as heat transfer processes. The absorption of the refrigerant vapor though inherently involves mass transfer into the absorbent, which in comparison to the heat transfer usually is a slow transport process. Modeling absorption chillers, however, usually does not include this mass transfer process. This in fact neglects the dominant process in absorption chillers which is addressed in the present paper.