TY - JOUR
TI - Influence of feed flow rate and feed concentration on the ammonia absorption refrigeration system
AU - Hu Yu
AU - Sun Xiaolin
AU - Wang Jinfeng
AU - Zhang Jianguo
AU - Zhou Zhigang
JN - Thermal Science
PY - 2025
VL - 29
IS - 6
SP - 4587
EP - 4598
PT - Article
AB - The absorption refrigeration system is a type of heat-driven system. The working pairs used most commonly are the lithium bromide-water and the ammonia-water pairs. Compared to the lithium bromide-water pair, the ammonia-water pair can achieve lower evaporation temperature and has a wider range of applications in industry. Feed flow rate and feed concentration are key factors affecting the system’s performance, which have significant effects on the ammonia concentration and flow rate at the outlet of the distillationwer, as well as the COP of the system. In this paper, the relationship between feed concentration, feed flow rate, and system performance is investigated by numerical simulation and experimental study. The results show that increased feed concentration can effectively improve the ammonia concentration at the outlet of the distillationwer. At the same time, there is an optimal feed flow rate in the system, and when the feed flow rate rises gradually to the optimal value, the COP of the system also increases. When the feed flow rate exceeds the optimal value, the ammonia concentration at the outlet of the distillationwer will be rapidly reduced, as well as the COP of the system.
DO - 10.2298/TSCI241102020H
ER -