夏热冬冷地区办公建筑多联机空调系统冷负荷计算方法探讨
Discussion on cooling load calculation methods of VRF air conditioning system for office buildings in hot summer and cold winter zone
摘要：
由于多联机空调系统具有间歇运行、邻室传热的特点,其运行模式对空调负荷计算结果影响较大,采用单位面积负荷指标的估算法可能造成选型偏大,导致成本增加和能源浪费。本文以上海某办公建筑为例,使用DeST软件模拟不同运行模式下建筑的冷负荷,探究办公建筑推荐的负荷放大系数范围。结果表明,T/CECA 20016—2022《多联机空调系统设计应用技术规程》中推荐的负荷放大系数范围1.2～2.0有一定的适用性,但对极端情况的房间还需要进一步放大,例如间歇短时运行。
Abstract：
Since the VRF air conditioning system has the characteristics of intermittent operation and heat transfer from neighboring rooms, its operation mode has a large impact on the air conditioning load calculation results, and the estimation method of the unit area load index may cause the problem of large selection, leading to cost increase and energy waste. In this paper, an office building in Shanghai is taken as an example, and the DeST software is used to simulate the cooling loads of the building under different operation modes and to explore the recommended range of load amplification factors for office buildings. The results show that the recommended load amplification factor range of 1.2 to 2.0 in the T/CECA 20016-2022Applicationtechnicalspecificationformulti-splitairconditioning(heatpump)systemhas some applicability, but further amplification is needed for some rooms in more extreme cases, such as intermittent short-time operation.
Keywords:VRF air conditioning system; cooling load; office building; load amplification factor; equipment selection; intermittent operation; dynamic load simulation