对于以柴油机为动力的舰船，柴油机工作过程中可能由于排气泄露或二次吸入导致舱内有害气体浓度升高。为了评估该类事故工况的影响，本文针对某典型舰船，以柴油机尾气中的CO为特征污染物，利用多区域模型仿真，分析了不同排气泄漏程度及二次吸入程度下典型舱室CO浓度变化情况。研究结果表明，4%排气泄漏率时，会导致柴油机舱CO浓度急剧升高，超出室内空气质量90 d容许浓度限值；9%排气二次吸入时，会导致所有舱室平衡浓度超过90 d容许浓度限值。结合分析结果，建议在柴油机舱进行CO浓度实时监测，并对柴油机通风、排气管路设计进行优化。
For diesel-powered transmission, the harmful gas concentration in the cabin may be increased due to exhaust leakage or secondaryinhalation during the working of the diesel engine. In order to evaluate the influence of the accidentCO in diesel exhaust is used as a characteristic pollutant. Using the multi-zone simulation method, the variation of CO concentration in a typical cabin under different exhaust leakage levels and secondary intake levels is analyzed. The resultsshow that the exhaust leakage rate of 4% will lead to a sharp increase of CO concentration in the diesel engine cabin, which will exceed the allowable concentration of 90d.9% of the exhaust intake ratewilllead to the equilibrium concentration of all compartments exceeding the allowable concentration of 90d. Combined with the analysis results, it is recommended to install a CO monitoring device that can respond quickly in the diesel engine compartment.
2019,41(6): 110-114 收稿日期：2018-09-10
DOI：10.3404/j.issn.1672-7649.2019.06.023
分类号：U664.1
作者简介：唐熊辉(1982-),男,工程师,主要从事船舶系统研究
参考文献：
[1] KHAIR M K, MAJEWSKI W A. Diesel emissions and their control[M]. SAE International, 2006.
[2] NRC. Emergency and continuous exposure guidance levels for selected submarine contaminants[R]. National Academy Press, Washington D. C., 2007.
[3] DIAMONDD, LUNN M, BOLLAN H. Royal navy submarine air purification-current and future[C]//31st International Conference on Environmental Systems, Orlando, Florida, 2001, 7:9-12.
[4] PEEL A E, ARSAC F, JOUANDON E. Control of the submarine atmosphere in the French navy[C]//AIAA 40th International Conference on Environmental Systems, Barcelona, Spain, 2010.
[5] 李军. 舰船密闭舱室空气净化系统数学模型及其分析[J]. 舰船科学技术, 2004, 26(S1):41-45 LI J. Mathematical model and analysis of air purification system of hermetic ship cabin[J]. Ship Science and Technology, 2004, 26(S1):41-45
[6] 李永强, 郑贤德. 电算求解密闭舱室空气净化方程[J]. 船海工程, 2003(6):21-23 LI Y Q, ZHENG X D. Solving the air purification equation of airtight cabin by computer[J]. Ocean Engineering, 2003(6):21-23
[7] 赵彬, 陈玖玖, 陈曦. 室内颗粒浓度影响因素的集总模型分析[J]. 清华大学学报(自然科学版), 2005, 45(12):1589-1591 ZHAO B, CHEN J J, CHEN X. Analysis of factors influencing indoorparticle concentration using thelumped parameter model[J]. J Tsinghua Univ (Sci & Tech), 2005, 45(12):1589-1591
[8] DOWDING C, TOFT G, TAYLOR T. BREATH computer modeling of submarine-atmosphere purge regimes. Proceedings of the Submarine air Monitoring and Air Purification International Symposium, 5~8 October 2015, Den Helder, The Netherlands.
[9] 王骁, 唐熊辉, 余涛, 等. 舰船舱室通风系统效能评估[J]. 舰船科学技术, 2018, 40(1):139-142 WANG X, TANGX H, YU T, et al. Effectiveness evaluation of cabin ventilation system[J]. Ship Science and Technology, 2018, 40(1):139-142
[10] 余涛, 周爱民, 沈旭东. 多区域网络模型在船舶舱室污染物传播研究中的应用[J]. 舰船科学技术, 2014, 36(8):137-141 YU T, ZHOU A M, SHEN X D. Application of multi-zone network model on contaminant transport in ship cabins[J]. Ship Science and Technology, 2014, 36(8):137-141
[11] 陈树柏. 网络图论及应用[M]. 北京:科学出版社, 1984.
[12] 石兆玉. 流体网络分析与综合[M]. 北京:清华大学热能工程系, 1993.
[13] 王丹. 一种基于总体能量平衡的管网平差计算方法[D]. 重庆:重庆大学, 2012. WANG D. An algorithm of hydraulic calculations fortube net based on total energy balance[D]. Chongqing:Chongqing University, 2012.
[14] Dols W S, Emmerich S J, Polidoro B J. Using Coupled Energy, Airflow and IAQ Software(TRNSYS/CONTAM)to Evaluate Building Ventilation Strategies[J]. Building Services Engineering Research & Technology Bser & T, 2016, 37(2):163
[15] NIST Technical Note 1887. CONTAM User Guide and Program Documentation (Version 3. 2)(R).
[16] 王芳, 陆亚俊. 多区域空气流动网络模型用于室内空气品质和通风模拟研究[J]. 暖通空调HV&AC, 2002, 32(6):44-46 WANG F, LU Y J. Application of multi-zone modelingsoftwaretoventilation and indoor air quality[J]. HV&AC, 2002, 32(6):44-46
[17] MAZUREK W. Submarine atmospheres[C]//Air Quality in Airplane Cabins and Similar Enclosed Spaces. Springer Berlin Heidelberg, 2005:351-382.
[18] 冯东辉. 潜艇舱室气体成分集中监测技术[J]. 舰船科学技术, 2001, 23(3):16-18
[19] 施红旗, 唐熊辉. 潜艇大气环境监测技术发展概况[J]. 舰船科学技术, 2007, 29(5):43-47 SHI H Q, TANG X H. Application of airmonitoring technology in nuclear submarine[J]. Ship Science and Technology, 2007, 29(5):43-47
