昆明地区空调设计的特殊性及其分析

The Peculiarity of the Design of Air-conditioning System in Kunmung Region and its Analysis

昆明地区属于气候温和地区,建筑的空调设计要充分考虑到其气候特点,应根据本地区的实际情况计算冷负荷,避免设计负荷太大,初投资及运行费用偏高的现象;夏季应适当加大新风量,过度季节尽可能利用室外新风的降温能力;同时在设计送风量很大的洁净空调系统时,应采用二次回风系统,以使空气处理机组中的表冷器在合理的传热工况下工作;当实际设计的空气处理机的回风温度与样本测试工况相差较大时,应对选用的冷盘管的换热能力进行校核计算,根据校核计算正确确定空气处理机中冷(热)盘管的排数,确保在保证使用效果的前提下降低设备初投资。

Kunming possesses a mild climate,this important characteristics should be considered in the design of air-conditioning system.The cooling load should be calculated according to the national code to avoid unnecessary investment waste;the amount of fresh air should be increased advisably because of the mild outdoor temperature,and proper measures should be taken in order to make use of the cooling capacity of the outdoor fresh air during the transition seasons;the second return-air system should be utilized in the case of large amount of supply air required;the heat transfer capability of the air-handling units should be checked on condition of different return air temperature from that of the tested in the technical instruction manuals.