王淼, 张扬, 谢军龙. 夏季船舶空调动态冷负荷仿真与分析[J]. 中国舰船研究, 2018, 13(S1): 199-206. DOI: 10.19693/j.issn.1673-3185.01334
引用本文: 王淼, 张扬, 谢军龙. 夏季船舶空调动态冷负荷仿真与分析[J]. 中国舰船研究, 2018, 13(S1): 199-206. DOI: 10.19693/j.issn.1673-3185.01334
WANG Miao, ZHANG Yang, XIE Junlong. Simulation analysis of dynamic cooling loads of ship air conditioning in summer[J]. Chinese Journal of Ship Research, 2018, 13(S1): 199-206. DOI: 10.19693/j.issn.1673-3185.01334
Citation: WANG Miao, ZHANG Yang, XIE Junlong. Simulation analysis of dynamic cooling loads of ship air conditioning in summer[J]. Chinese Journal of Ship Research, 2018, 13(S1): 199-206. DOI: 10.19693/j.issn.1673-3185.01334

夏季船舶空调动态冷负荷仿真与分析

Simulation analysis of dynamic cooling loads of ship air conditioning in summer

  • 摘要:
      目的  为分析固定航线航行船舶的动态冷负荷,总结其变化规律,
      方法  建立船舶舱室模型,比较途经航线上6个地区(香港、汕头、福州、温州、上海、大连)时船舶的动态冷负荷的变化情况,建立航向角与太阳方位角之间的联系,分析角度变化引起的动态冷负荷的波动情况。
      结果  研究表明,温州地区最大总冷负荷可达9.63 kW,而同一时刻汕头地区的最大总冷负荷仅为5.11 kW,是温州地区的53%。航向角对动态冷负荷影响较大,在航向角为东偏北40°时,动态总冷负荷、动态壁面(包括窗户得热)渗透热带来的冷负荷和太阳辐射得热的最大增幅分别达到21%,43%和62%,航向角偏离正北方向越大,动态总冷负荷增幅越大,增幅和集中时段与角度有关。
      结论  在船舶空调设计时,应考虑航行途中航向角变化导致的负荷波动,精确计算空调系统的最大负荷,选择合适的设备型号或优化控制策略。而且空调负荷计算应综合考虑航线途经地区的外界环境影响。

     

    Abstract:
      Objectives  This paper aims to analyze the dynamic cooling loads of ship on fixed routes and conclude with their changing laws.
      Methods  To this end, the ship cabin is modelled to compare the dynamic cooling load changes in 6 different regions of the route(i.e. Hong Kong, Shantou, Fuzhou, Wenzhou, Shanghai, Dalian). Besides, the relation between the course angle and the sun azimuth angle is established to analyze the variation of dynamic cooling loads due to change of these angles.
      Results  It is shown that the maximum total cooling load in Wenzhou area can reach 9.63 kW, while that in Shantou area only accounts for 53% of Wenzhou area, i.e. 5.11 kW. Course angle has great influence on the dynamic cooling load. At the course angle of 40° east by north, the total dynamic cooling load, the cooling load resulted from the heat penetration on wall surfaces(including windows)and the cooling load resulted from absorption of solar radiation increase by up to 21%, 43% and 62% respectively. The greater the deviation from the normal north direction is, the greater the increase of the total dynamic cooling load will be. The increase of cooling load is related to the concentration time and the course angle.
      Conclusions  The load variation caused by course angle during navigation should be considered, to accuately calculate the maximum load of air conditioning, and to select proper equipment model or optimal controlling strategy. Moreover, the air conditioning load calculation of each voyage should take into account the environmental conditions of covered areas.

     

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