Analysis on Flow Patterns of Two-phase Flow and Lifting Capacity in Two-stage Bubble Pump with Lithium Bromide Solution
- DOI
- 10.2991/meic-14.2014.328How to use a DOI?
- Keywords
- bubble pump;flow pattern;lifting capacity;gas production;flow rate
- Abstract
Bubble pump was proposed to replace the traditional mechanical solution pump in the lithium bromide absorption chiller, for its advantageous feature that can be driven by industrial waste heat or solar energy or other low-grade energy. It is found that different flow patterns in ascending pipe have large relations with the performance of bubble pump. In this paper, effects of flow patterns of two-phase flow on lifting capacity are analyzed in two-stage bubble pump with lithium bromide solution. Different flow patterns of two-phase flows in ascending pipe are observed by high-speed camera. Velocities of the liquid-phase in different flow patterns in vertical pipe with lithium bromide solution are measured. The gas production of the system and the lifting capacity of bubble pump under different flow patterns are obtained by calculation. The changes of concentration of working fluid in different flow patterns are also calculated. The main flow patterns observed include bubble flow, slug flow, churn flow and annular flow at different concentrations of lithium bromide solution. The comparison of different concentrations of lithium bromide shows a tendency that the corresponding velocity for the same pattern with low concentration solution is little greater than that with high concentration.
- Copyright
- © 2014, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Bingbing Liu AU - Hongtao Gao AU - Long Meng PY - 2014/11 DA - 2014/11 TI - Analysis on Flow Patterns of Two-phase Flow and Lifting Capacity in Two-stage Bubble Pump with Lithium Bromide Solution BT - Proceedings of the 2014 International Conference on Mechatronics, Electronic, Industrial and Control Engineering PB - Atlantis Press SP - 1457 EP - 1461 SN - 2352-5401 UR - https://doi.org/10.2991/meic-14.2014.328 DO - 10.2991/meic-14.2014.328 ID - Liu2014/11 ER -