摘要
通过搭建垂直管内R124-DMAC鼓泡吸收可视化试验平台,对鼓泡吸收过程中的气液体积流率、溶液入口温度与溶液入口浓度对鼓泡吸收传质性能的影响进行研究。试验结果表明:提高溶液体积流率和降低气体体积流率,可以提高鼓泡式吸收器的传质性能,但提高溶液体积流率会增加吸收式制冷系统的溶液泵功率,降低系统性能系数;降低气体体积流率会降低吸收式制冷系统的制冷量。而溶液入口温度和浓度的降低,均可以较大幅度提高R124-DMAC鼓泡式吸收器的传质性能。
Through constructing a set of visualization experimental platform for R124- DMAC bubble absorption in vertical tube, the influences of vapor flow rate, solution flow rate, solution inlet temperature and concentration on bubble absorption mass transfer per- formance are studied. Experimental results show that increasing solution flow rate and de- creasing vapor flow rate can improve the mass transfer performance of bubble absorber. However, enhancing solution flow rate leads to an increasing of solution pump power, which reduces the absorption refrigeration system＇s COP, and reducing the vapor flow rate can decrease the cooling capacity of absorption refrigeration system. It＇s found that decreasing the solution inlet temperature and concentration can improve the mass transfer performance of the R124-DMAC bubble absorber.
出处
《制冷与空调》
2015年第6期82-85,共4页
Refrigeration and Air-Conditioning
基金
国家自然科学基金(51376032)
