【作者】 魏玲；

【导师】 臧润清；

【作者基本信息】 天津商业大学 ， 制冷及低温工程， 2007， 硕士

【摘要】 本文在已有的研究基础上，采用理论研究与实验操作相结合的方法，通过对常规空调系统、蓄冰空调系统、冰-C7蓄冷空调系统的经济技术分析与评价可知，冰-C7蓄冷空调系统增加的初投资不到一年既可收回，表明了该系统的可行性，其投资回收期比蓄冰空调系统短，表明了该系统的优越性。通过从理论上对不同混合比(冰与C7)对蓄冷槽性能的影响的分析，表明蓄冰厚度对蓄冰槽性能影响显著；对该蓄冷空调系统，当蓄冰厚度取14mm时，相变材料质量混合比取1.8～3.6时较为理想，对应的体积比为3.2～6.4。实验数据分析表明，PCM-C7的应用不仅可增加系统蓄冷量(加入PCM-C7质量为35.875kg、23.625kg时同无PCM-C7的蓄冷槽相比，蓄冷量分别增加了18.73％，13.43％，释冷量分别增加了18.90％，11.79％)，而且可提高系统蒸发温度(当加入23.625kg PCM-C7时比无PCM-C7时蒸发温度平均提高2.140℃，当加入35.875kg PCM-C7时比无PCM-C7蒸发温度平均提高2.654℃)；从提高蒸发温度的角度考虑，加入PCM-C7的最大于23.625kg即为比较理想，此时对应的冰(水)与PCM-C7质量混合比例为4.507，相应的体积混合比例为8.112；实验亦表明了释冷过程蓄冷槽内水的较好流动性。更多还原

【Abstract】 The paper employs the method of combing theory with experiment study on the base of the condition we already had. The economic technical analysis of general air-conditioning system, ice-storage air-conditioning system and ice-C7 mixed cool-storage air-conditioning system indicts that the mixed cool-storage system is feasible because the increased first cost of it will recover in a year. And the recovery time of ice-C7 system is shorter than the ice-storage system.Through the analysis of different mixed proportion of PCM affecting cool-storage tank, the results indicate that the thickness of ice affects the performance of cool-storage tank seriously, and the best mixed proportion range of quality is from 1.8 to 3.6, the mixed proportion range of volume is from 3.2 to 6.4, when the thickness of ice is 14mm.The data of experiment indict that the application of PCM-C7 is not only increases the cool-storage capacity (when the quality of PCM-C7 is 35.875kg or 23.625kg, the cool-storage capacity increases 18.73%, 13.43% and the cool-release increases 18.90%, 11.7% corresponding compared with the cool-storage tank having no PCM-C7), but also enhances the evaporating temperature (when the quality of PCM-C7 is 35.875kg or 23.625kg, the evaporating temperature increases 2.140℃, 2.654℃corresponding compared with the cool-storage tank having no PCM-C7) and when the quality of PCM-C7 is more than 23.625 kg is well, which the mixed proporation of quality is less than 4.507 and the prpporation of volume is less than 8.112. The experiment also indicts that the water in cool-storage have excellent fluidness in cool-rlease process.更多还原