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首页> 外文期刊>International Journal of Heat and Mass Transfer >Drop Formation Of Swirl-jet Nozzles With High Viscous Solution In Vacuum-new Absorbent In Spray Absorption Refrigeration
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Drop Formation Of Swirl-jet Nozzles With High Viscous Solution In Vacuum-new Absorbent In Spray Absorption Refrigeration

机译：喷雾吸收制冷中真空新吸收剂中高粘度溶液旋流喷嘴的液滴形成

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摘要

In this paper, the drop formation properties of a lithium bromide salt solution Trane [Trane, Private communication, 1997, [1]], which is utilized in a new concept of spray absorber, is investigated. In the spray absorber of the absorption refrigeration cycles, the feasibility of forming droplets with an optimum diameter of 300 μm, calculated by the drop absorption model, were studied. To achieve above, a single nozzle spray chamber able to attain a low-pressure of 1.23 kPa (0.178 psia) pressure was built. The nozzles experimentally tested were swirl-jet nozzles. The differential pressure across the nozzles was varied from 50 to 200 kPa (7.25-29 psia). The flow rate in the experiment was varied between 0.018 and 0.043 kg/s (2.376-5.676 lb/min). The flow number that define the effective flow of the selected nozzles were 7.6 × 10~(-7), 1.5 × 10~(-6) and 2.3 × 10~(-6) and the viscosity ratio of this disperse/continuous phase flow was 1300. The nozzles tested were able to produce drop sizes having a mean volumetric diameter (MVD) between 375 urn and 425 urn. Comparison of drop absorption model results to conventional absorber results shows a significant improvement in absorption.
机译：在本文中，研究了溴化锂盐溶液Trane的液滴形成特性[Trane，私人通讯，1997，[1]]，它被用于喷雾吸收器的新概念中。在吸收式制冷循环的喷雾吸收器中，研究了通过液滴吸收模型计算出形成最佳直径为300μm的液滴的可行性。为了达到上述目的，建立了能够达到1.23 kPa（0.178 psia）低压的单喷嘴喷雾室。实验测试的喷嘴是旋流喷嘴。喷嘴两端的压差在50至200 kPa（7.25-29 psia）之间变化。实验中的流速在0.018和0.043 kg / s（2.376-5.676 lb / min）之间变化。定义所选喷嘴的有效流量的流量为7.6×10〜（-7），1.5×10〜（-6）和2.3×10〜（-6），并且该分散/连续相流的粘度比为1300。所测试的喷嘴能够产生具有在375μm至425μm之间的平均体积直径（MVD）的液滴尺寸。液滴吸收模型结果与常规吸收器结果的比较表明吸收率有显着提高。

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