多主机制冷机房变流量解耦控制策略研究

Variable Flow Decoupling Control Strategy of Multi-Host Chiller Plant

在单主机制冷机房变流量解耦控制策略基础上,探讨了多主机制冷机房的变流量解耦控制策略。在考虑冷水机组COP值同时是冷负荷及冷却水进水温度的函数基础上,通过比较不同冷负荷分配策略对制冷机房能耗的影响,得到了在大多数负荷区间,采用均匀分配总冷负荷的策略最为节能。这说明,前期关于单主机制冷机房变流量变温差控制方式可推广至多主机制冷机房变流量控制。

According to the variable water flow decoupling control strategy of single host chiller plant, the control strategy for multi-host chiller plant were studied in this paper. Consider the COP value of chiller is a function about the cooling load and inlet cooling water temperature, by comparing the energy consumption of chiller plant under different cooling load allo- cation strategy. Results shows evenly distribute cooling load was the most energy-saving strategy at majority load range. This indicates that the variable water flow deeoupling control based on single host chiller plant can he extended up to the host chiller nlant system.