基于建筑热惰性的空调系统动态调节优化研究

Research on dynamic regulation optimization of air conditioning system based on building thermal inertia

从运行方式的角度对地板辐射+地源热泵空调系统进行优化,以济南某办公建筑为例,利用Trnsys仿真模拟软件建立地板辐射+地源热泵空调系统模型,通过改变负荷侧水泵流量、机组功率、系统启停时间,比较不同方式运行的舒适性和经济性,探索地板辐射供冷系统建筑围护结构的蓄热特性。结果显示:在保证舒适性的前提下,可以减小负荷侧水泵流量和机组功率,确定最佳运行参数,减少系统能耗;墙体总蓄热时间为12.5 h,放热时间为11.5 h,由于墙体具有热惰性,温度变化具有明显的峰值延迟现象;系统在7:30~18:00运行能够缩短运行时间,降低空调系统运行能耗。

The article optimizes the floor radiant+ground source heat pump air conditioning system from the perspective of running mode,taking an office building in Jinan as an example,using Trnsys simulation software to establish a the floor radiant+ground source heat pump air conditioning system model,by changing the load side pump flow,unit power,system start and stop time,comparing the comfort and economy of different ways of operation,exploring the heat storage characteristics of the floor radiant cooling system building envelope structure.The results show that under the premise of ensuring comfort,the flow of the load-side pump and unit power can be reduced,the optimal operating parameters can be determined,and the energy consumption of the system can be reduced.The total heat storage time of the wall is 12.5 h,the heat discharge time is 11.5 h,due to the thermal inertness of the wall,the temperature has obvious peak delay phenomenon.The system running time is reduced and the energy consumption of the air conditioning system is reduced when it runs from 7:30 to 18:00.