Abstract
An absorber is a major component in the absorption refrigeration systems, and its performance greatly affects the overall system performance. In this study, both the numerical and experimental analyses in the absorption process of a bubble mode absorber were performed. Gas was injected into the bottom of the absorber at a constant solution flow rate. The region of gas absorption was estimated by both numerical and experimental analyses. A higher gas flow rate increases the region of gas absorption. As the temperature and concentration of the input solution decrease, the region of gas absorption decreases. In addition, the absorption performance of the countercurrent flow was superior to that of cocurrent. Mathematical modeling equations were derived from the material balance for the gas and liquid phases based on neglecting the heat and mass transfer of water from liquid to gas phase. A comparison of the model simulation and experimental results shows similar values. This means that this numerical model can be applied for design of a bubble mode absorber.
| Original language | English |
|---|---|
| Pages (from-to) | 551-558 |
| Number of pages | 8 |
| Journal | International Journal of Refrigeration |
| Volume | 26 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 2003 Aug |
Keywords
- Absorber
- Absorption system
- Ammonia-water
- Bubble
- Mass transfer
- Modelling
ASJC Scopus subject areas
- Building and Construction
- Mechanical Engineering