船舶空调负荷动态与稳态算法比较与分析

Dynamic Load Calculation Model of Ship and Comparison with Steady State Algorithm

基于热反应系数法,重点考虑太阳辐射和航速的影响,构建了船舶空调动态负荷计算模型。以某远洋航线的典型工况,选取船舶居住舱室为研究对象,应用动态和稳态方法,分别计算分析了其空调负荷变化规律。结果表明,动态算法得出的围壁传热、窗户得热、人员和照明散热冷负荷、新风冷负荷、舱室总冷负荷仅分别为稳态算法数值的45.4%、35.2%、40.2%、39.7%和40.6%,用动态负荷计算模型可以实时掌握船舶空调负荷变化规律。

A dynamic calculation model of cooling load for marine air-conditioning systems was developed by using the method of thermal response factor, in which the effects of solar radiation and ship＇s speed on the cooling load were entirely investigated The cooling load of deck habitat chamber located at a ship on ocean route were calculated and analyzed in a typical working condition by the dynamic and steady-state algorithm. The calculated results show that the amount of heat transfer through the wall and window, the heat discharged by occupants and lightings, fresh air cooling load and the overall cooling load calculated by dynamic algorithm only account for 45.4%, 35.2%, 40.2%, 39.7% and 40.6% that of calculated by steady-state algorithm, respectively. The real-time variations of cooling load of marine air-conditioning system were calculated by dynamic algorithm.