Visual experimental research on the effect of nozzle orifice structure on R124–DMAC absorption process in a vertical bubble tube

Jiang, Meihui; Xu, Shen; Wu, Xi; Hu, Junyong; Wei, Wang

doi:10.1016/j.ijrefrig.2016.04.025

Cited by 14 publications

(2 citation statements)

References 28 publications

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“…Based on these, a novel absorption compression hybrid refrigeration cycle was proposed in our previous research . An air‐cooling bubble absorber and coiled tube generator were adopted in the system. However, the actual effect of both bubble absorber and coiled tube generator installed in the system should be considered carefully.…”

Section: Introductionmentioning

confidence: 99%

Dynamic simulation and experimental verification on absorption refrigeration driven by vehicle waste heat

Liu

Han

et al. 2020

Int J Energy Res

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Waste heat exhausted from vehicle engine has significant influences on the performances of absorption refrigeration driven by vehicle exhaust heat (VARS), especially for the transient response of VARS to the exhaust temperature and flow rate. Moreover, ambient temperature and flow rate of solution pump also affect its performances. Based on these, a dynamic mathematical model of VARS was proposed and established to observe its dynamic performances in this work. Further, the dynamic model was solved, and the simulation results were compared to the experimental data of a prototype in the same operating conditions. Finally, the transient response of VARS to exhaust temperature and flow rate, ambient temperature, and flow rate of solution pump were analyzed. The simulation results showed that the response time is about 2000 seconds when a disturbance was imposed. The research findings can supply some guidance for a reliable design, optimization, and control strategy for the actual application of the VARS. K E Y W O R D Sbubble absorber, dynamic simulation, spiral coil generator, vehicle driven absorption refrigeration

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Section: Introductionmentioning

confidence: 99%

Dynamic simulation and experimental verification on absorption refrigeration driven by vehicle waste heat

Liu

Han

et al. 2020

Int J Energy Res

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“…The R124-DMAC mixture was used in the cycle and some theoretical analysis and experiment study had been done for the cycle. The vertical fin-tube bubble absorber cooled by air was applied in the system. − The reason why choosing R124-DMAC mixture used as working fluid is that its VLE data had been measured and the correlations of its thermal properties had been given by Borde et al Nevertheless, other binary mixture such as R124-NMP or R124-DMF can be considered as working fluid in the ACHRC. Unfortunately, the VLE data of R124-NMP or R124-DMF mixture are never published in open literatures, so it is difficult to confirm which working fluid in three binary mixtures, R124-NMP, R124-DMF and R124-DMAC, is more suitable to be used in the ACHRC.…”

Section: Introductionmentioning

confidence: 99%

Measurement and Correlation of Vapor–Liquid Equilibrium for R124 (1-Chloro-1,2,2,2-Tetrafluoroethane)-NMP (N-Methyl-2-Pyrrolidone) and R124-DMF (N,N-Dimethylformamide) Mixtures

Wang

et al. 2017

J. Chem. Eng. Data

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Vapor–liquid equilibrium data of binary working pairs play a crucial part in the research of absorption process and absorption refrigeration technology. In this paper, the VLE data of binary mixtures, R124-NMP and R124-DMF, were measured in a temperature range from 303.15 to 363.15 K, using a VLE measurement apparatus. The activity coefficient model of five-parameter nonrandom two liquid (NRTL) was selected to correlate all the VLE data acquired by measurement. The maximum relative deviation of the pressure between the measurement data and calculated data for R124-NMP and R124-DMF were 3.80% and 3.27% respectively, and the average relative deviation of the pressure were 1.25% and 1.17% respectively. The correlated results coincide well with the measurement data and show that the VLE characteristics of R124-NMP and R124-DMF mixtures have a negative deviation from Raoul’s law. Comparing three absorbents, DMF, DMAC and NMP, the activity coefficient of R124 in DMF is largest, that in DMAC is second, and that in NMP is smallest.

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Comparative Study on Two-Stage Absorption Refrigeration Systems with Different Working Pairs

Kong

Meng

et al. 2020

J. Shanghai Jiaotong Univ. (Sci.)

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Visual experimental research on the effect of nozzle orifice structure on R124–DMAC absorption process in a vertical bubble tube

Cited by 14 publications

References 28 publications

Dynamic simulation and experimental verification on absorption refrigeration driven by vehicle waste heat

Dynamic simulation and experimental verification on absorption refrigeration driven by vehicle waste heat

Measurement and Correlation of Vapor–Liquid Equilibrium for R124 (1-Chloro-1,2,2,2-Tetrafluoroethane)-NMP (N-Methyl-2-Pyrrolidone) and R124-DMF (N,N-Dimethylformamide) Mixtures

Comparative Study on Two-Stage Absorption Refrigeration Systems with Different Working Pairs

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