Numerical evaluation of a compact generator design for steam driven H2O/LiBr absorption chiller application
Seung Yeob Lee,
Su Kyoung Lee,
Jin Taek Chung and
Yong Tae Kang
Energy, 2018, vol. 152, issue C, 512-520
Abstract:
The objectives of this study are to analyze effects of design parameters of a generator with a steam heat source on condensation heat transfer and flow characteristics inside tubes and to design optimum configuration of the generator with minimum volume that satisfies design constraints for H2O/LiBr absorption chiller application. To that end, the heat transfer and flow characteristics of a straight-pipe tube and a tube with return bends were analyzed through numerical analysis according to the tube diameter, number of tubes, and the diameter of return bends. It was found that the minimum tube volume satisfying the design constraints was obtained for Ntube=2 and Dtube=12mm in the case of the straight tube. The smaller the diameter of the return bend was, the greater the flow separation area, which caused a large local flow velocity. In the case of the return bend tubes, the smallest tube volume that satisfies both the flow and pressure drop constraints was obtained for Ntube=2 and Dturn/Dtube=1.0. In the case Dturn/Dtube=1.5, where the pressure drop was the smallest, the pressure drop was higher by 9% compared to the pressure drop constraint (1 bar), but the tube volume that satisfies the flow constraints decreased by 49%.
Keywords: Compact generator design; Condensation heat transfer; Minimum volume; Pressure drop; Steam-driven absorption chiller (search for similar items in EconPapers)
Date: 2018
References: Add references at CitEc
Citations: View citations in EconPapers (1)
Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S036054421830570X
Full text for ScienceDirect subscribers only
Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.
Export reference: BibTeX
RIS (EndNote, ProCite, RefMan)
HTML/Text
Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:152:y:2018:i:c:p:512-520
DOI: 10.1016/j.energy.2018.03.161
Access Statistics for this article
Energy is currently edited by Henrik Lund and Mark J. Kaiser
More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu (repec@elsevier.com).