Modeling the dynamic simulation and control of a single effect LiBr-H2O absorption chiller

被引：48
|
作者：
Xu, Yu-jie [1 ,2 ,3 ]
Zhang, Shi-jie [1 ,2 ]
Xiao, Yun-han [1 ,2 ]
机构：
[1] Chinese Acad Sci, Inst Engn Thermophys, Key Lab Adv Energy & Power, Beijing 100190, Peoples R China
[2] Chinese Acad Sci, Res Ctr Clean Energy & Power, Lianyungang 222069, Jiangsu, Peoples R China
[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
APPLIED THERMAL ENGINEERING | 2016年 / 107卷
基金：
中国国家自然科学基金;
关键词：
Absorption chiller; Dynamic performance; Control strategy; PERFORMANCE ANALYSIS; FALLING-FILM; HEAT; DESIGN; TEMPERATURE;
D O I：
10.1016/j.applthermaleng.2016.06.043
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
In this study, a dynamic model of a single-effect LiBr-H2O absorption chiller with improved accuracy is built to explore the dynamic performance and the control strategy. Holman correlation is applied to the calculation of heat transfer coefficients of the evaporator, condenser, solution heat exchanger, and generator. The heat and mass transfer in the absorber, chiefly controlled by the mass transfer resistance on the liquid side, are described according to a lumped but accurate physical model based on Nusselt's film theory. The dynamic performance of the absorption chiller is evaluated under the disturbance of the cooling water inlet temperature and heat source temperature. The effect of the thermal mass of the main components on the dynamic performance is explored. Two control strategies are implemented in the model of the absorption chiller: one is setting the chilled water outlet temperature as the manipulated variable, and the other is setting the generator solution temperature as the manipulated variable. The control performances of the two strategies are compared in detail. Results show that either increasing the heat source temperature or decreasing the cooling water inlet temperature increases the risk of crystallization in the dynamic process. The time to reach steady state is highly dependent on the thermal mass of the generator, rather than the thermal masses of the condenser, evaporator, and absorber. The single-effect chiller has better control performance in off-design condition when the generator solution temperature rather than the chilled water outlet temperature is selected as the manipulated variable. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1183 / 1191
页数：9
相关论文
共 50 条
  • [31] The effect of additives on condensation evaporation and absorption processes in LiBr-H2O refrigeration system
    Pise, AT
    Devotta, S
    Kant, K
    [J]. CRYOGENICS AND REFRIGERATION - PROCEEDINGS OF ICCR'2003, 2003, : 513 - 517
  • [32] Study on heat and mass transfer performance of the absorber covered with net on the pipe surface in a LiBr-H2O absorption chiller
    Xie, G. Z.
    Fa, X. M.
    [J]. CRYOGENICS AND REFRIGERATION, PROCEEDINGS, 2008, : 461 - 465
  • [33] Thermodynamic modelling of a double-effect LiBr-H2O absorption refrigeration cycle
    Iranmanesh, A.
    Mehrabian, M. A.
    [J]. HEAT AND MASS TRANSFER, 2012, 48 (12) : 2113 - 2123
  • [34] The influence of the overall heat transfer coefficients in the dynamic behavior of a single effect absorption chiller using the pair LiBr/H2O
    Ochoa, A. A. V.
    Dutra, J. C. C.
    Henriquez, J. R. G.
    dos Santos, C. A. C.
    Rohatgi, J.
    [J]. ENERGY CONVERSION AND MANAGEMENT, 2017, 136 : 270 - 282
  • [35] Optimizing single-stage double-effect LiBr-H2O absorption chiller in micro-trigeneration system using an atom search optimization algorithm
    Bagade, Sunil D.
    Rampure, Prasad B.
    [J]. SCIENCE AND TECHNOLOGY FOR THE BUILT ENVIRONMENT, 2022, 28 (10) : 1329 - 1340
  • [36] A MATHEMATICAL MODEL AND EXPERIMENTS FOR THE LIBR-H2O ABSORPTION HEAT PUMP
    Sun, Jian
    Fu, Lin
    Zhang, Shigang
    [J]. PROCEEDINGS OF THE ASME INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION - 2010, VOL 5, PTS A AND B, 2012, : 189 - 195
  • [37] Stationary analysis of a solar LiBr-H2O absorption refrigeration system
    Monne, C.
    Alonso, S.
    Palacin, F.
    Guallar, J.
    [J]. INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID, 2011, 34 (02): : 518 - 526
  • [38] An innovative solar-driven directly air-cooled LiBr-H2O absorption chiller prototype for residential use
    Lizarte, R.
    Izquierdo, M.
    Marcos, J. D.
    Palacios, E.
    [J]. ENERGY AND BUILDINGS, 2012, 47 : 1 - 11
  • [39] Modeling and performance analysis of an absorption chiller with a microchannel membrane-based absorber using LiBr-H2O, LiCl-H2O, and LiNO3-NH3
    de Vega, Mercedes
    Venegas, Maria
    Garcia-Hernando, Nestor
    [J]. INTERNATIONAL JOURNAL OF ENERGY RESEARCH, 2018, 42 (11) : 3544 - 3558
  • [40] Performance prediction of a solar/gas driving double effect LiBr-H2O absorption system
    Liu, YL
    Wang, RZ
    [J]. RENEWABLE ENERGY, 2004, 29 (10) : 1677 - 1695
12345