吸收器传热传质强化的研究综述

Review of Investigations on Heat and Mass Transfer Enhancement in Absorber

本文综述了国内外溴化锂吸收式制冷机吸收过程强化传热传质的有关研究现状。强化方法主要包括改进传热管、添加表面活性剂、改进吸收式制冷系统等,如改进传热管以增大传热吸收面积和吸收液的扰动;加入表面活性剂,以强化Marangoni(马拉格尼对流)效应;改进吸收式制冷系统以增大制冷剂的质量流量,并增大吸收器内的吸收推动力。

A brief review was presented on the technology and development of enhancing heat and mass transfer inabsorber. The enhancement methods mainly include improvement on heat exchanger tubes, addition ofsurfactant, improving absorption refrigeration system. Improved heat exchanger tubes increase theabsorption area and perturbation of aqueous lithium bromide solution. The addition of surfactant enhancesthe Marangoni convection. Improvement on absorption refrigeration system can increase the mass flowrate of the refrigerant in the refrigerant circuit.