[1]江楚遥,梁彩华,张小松.冷水机组变流量性能预测模型与实验研究[J].东南大学学报(自然科学版),2014,44(2):301-306.[doi:10.3969/j.issn.1001-0505.2014.02.014]
 Jiang Chuyao,Liang Caihua,Zhang Xiaosong.Performance prediction model for chiller with variable water flow and its experiment validation[J].Journal of Southeast University (Natural Science Edition),2014,44(2):301-306.[doi:10.3969/j.issn.1001-0505.2014.02.014]
点击复制

冷水机组变流量性能预测模型与实验研究()
分享到:

《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
44
期数:
2014年第2期
页码:
301-306
栏目:
能源与动力工程
出版日期:
2014-03-20

文章信息/Info

Title:
Performance prediction model for chiller with variable water flow and its experiment validation
作者:
江楚遥梁彩华张小松
东南大学能源与环境学院, 南京 210096
Author(s):
Jiang Chuyao Liang Caihua Zhang Xiaosong
School of Energy and Environment, Southeast University, Nanjing 210096, China
关键词:
冷水机组 变流量 参数集总 性能预测
Keywords:
chiller variable water flow lumped parameters performance prediction
分类号:
TB651
DOI:
10.3969/j.issn.1001-0505.2014.02.014
摘要:
为实现在冷水机组结构参数缺乏的条件下,对冷水机组变流量工况下的性能进行准确预测,提出了一种将冷水机组未知结构参数集总并基于少量机组实测数据获取模型参数的建模方法,建立了相应的冷水机组变流量性能预测模型.通过搭建冷水机组变流量实验装置并进行实验,获得其模型参数并对机组变流量性能进行了模拟与实验对比.结果表明:该建模方法的模型参数获取简便,模型性能预测精度较高,制冷量、COP等系统性能参数偏差在10%以内,能较好地表征冷水机组变流量工况下的性能变化规律.冷冻水流量从额定流量的100%降至42.8%时,冷水机组制冷量减小8.6%,COP减小8.8%;冷却水流量从额定流量的100%降至24.2%时,冷水机组制冷量减小1.8%,COP减小14.8%,可为空调系统的变流量优化运行提供指导.
Abstract:
To simulate existing chiller with variable water flow accurately under the condition of configuration parameter absence, a modeling method which makes unknown parameters lumped and obtains model parameters based on measured data of chiller is proposed. A performance prediction model for chiller with variable water flow is developed, and an experimental device is built up to obtain the parameters of the model and make a comparison on the performance of chiller between simulation and experiment. The results show that by this modeling method, the parameters of the model are easy to gain, and the performance prediction accuracy of the model is high. The relative errors of performance parameters such as cooling capacity and COP(coefficient of performance)between simulation and experiment are within 10%, and the variation of the performance of chiller with variable water flow can be represented accurately. When chilled water flow decreases from 100% to 42.8% of the rated flow rate, cooling capacity decreases 8.6% and COP decreases 8.8%. When cooling water flow decreases from 100% to 24.2% of the rated flow rate, cooling capacity decreases 1.8% and COP decreases 14.8%. The results can provide evidence for the optimal operation of chiller.

参考文献/References:

[1] 汪训昌. 空调冷水系统的沿革与变流量一次泵水系统的实践[J].暖通空调, 2006, 36(7): 32-40.
  Wang Xunchang. Evolution of air conditioning chilled water systems and practice of variable primary flow chilled water systems[J]. HV & AC, 2006, 36(7): 32-40.(in Chinese)
[2] Saidur R, Hasanuzzaman M, Mahlia T, et al. Chillers energy consumption, energy savings and emission analysis in an institutional buildings[J]. Energy, 2011, 36(8): 5233-5238.
[3] Yu F W, Chan K T. Experimental determination of the energy efficiency of an air-cooled chiller under part load conditions[J]. Energy, 2005, 30(10): 1747-1758.
[4] Yu F W, Chan K T. Environmental performance and economic analysis of all-variable speed chiller systems with load-based speed control[J]. Applied Thermal Engineering, 2009, 29(8/9): 1721-1729.
[5] Lee T S, Liao K Y, Lu W C. Evaluation of the suitability of empirically-based models for predicting energy performance of centrifugal water chillers with variable chilled water flow[J]. Applied Energy, 2012, 93(S1): 583-595.
[6] 蒋小强,龙惟定,王民,等. 空调水系统变流量的运行特性[J]. 流体机械,2010, 38(3): 71-75, 57.
  Jiang Xiaoqiang, Long Weiding, Wang Min, et al. Energy-efficiency performance with variable air-conditioning water flow rate[J]. Fluid Machinery, 2010, 38(3): 71-75, 57.(in Chinese)
[7] Gascons M, Blanco N, Vives J, et al. Numerical implementation and experimental validation of a through-the-thickness temperature model for non-isothermal vacuum bagging infusion[J]. Journal of Reinforced Plastics and Composites, 2011, 30(18): 1557-1570.
[8] Colorado-Garrido D, Santoyo-Castelazo E, Hernandez J A, et al. Heat transfer of a helical double-pipe vertical evaporator: Theoretical analysis and experimental validation[J]. Applied Energy, 2009, 86(7/8): 1144-1153.
[9] Luan Z J, Zhang G M, Tian M C, et al. Flow resistance and heat transfer characteristics of a new-type plate heat exchanger[J]. Journal of Hydrodynamics, 2008, 20(4): 524-529.
[10] Tang L H, Zeng M, Wang Q W. Experimental and numerical investigation on air-side performance of fin-and-tube heat exchangers with various fin patterns[J]. Experimental Thermal and Fluid Science, 2009, 33(5): 818-827.
[11] 张仲彬. 换热表面污垢特性的研究[D].保定: 华北电力大学能源动力与机械工程学院, 2009.
[12] Cecchinato L. Part load efficiency of packaged air-cooled water chillers with inverter driven scroll compressors[J]. Energy Conversion and Management, 2010, 51(7): 1500-1509.
[13] Yan Y Y, Lio H C, Lin T F. Condensation heat transfer and pressure drop of refrigerant R-134a in a plate heat exchanger[J]. International Journal of Heat and Mass Transfer, 1999, 42(6): 993-1006.

相似文献/References:

[1]文先太,梁彩华,张小松,等.热源塔液气比优化分析与实验研究[J].东南大学学报(自然科学版),2011,41(4):767.[doi:10.3969/j.issn.1001-0505.2011.04.021]
 Wen Xiantai,Liang Caihua,Zhang Xiaosong,et al.Experimental analysis of optimized liquid to gas ratio in heat-source tower[J].Journal of Southeast University (Natural Science Edition),2011,41(2):767.[doi:10.3969/j.issn.1001-0505.2011.04.021]

备注/Memo

备注/Memo:
收稿日期: 2013-07-23.
作者简介: 江楚遥(1988—),女,硕士生;梁彩华(联系人),男,博士,研究员,博士生导师, caihualiang@163.com.
基金项目: 国家自然科学基金资助项目(51106023)、“十二五”国家科技支撑计划资助项目(2011BAJ03B14)、江苏省自然科学基金重点资助项目(BK2010029).
引用本文: 江楚遥,梁彩华,张小松.冷水机组变流量性能预测模型与实验研究[J].东南大学学报:自然科学版,2014,44(2):301-306. [doi:10.3969/j.issn.1001-0505.2014.02.014]
更新日期/Last Update: 2014-03-20