蔣竹周




摘 要:傳統的供暖系統動態調節能力較差,難以保證水力的動態穩定,且具有能源消耗大的弊端。通過對供暖系統動態影響因素進行分析,明確了綜合管線內各支路水力穩定的動態約束條件,以此為基礎,進行供暖系統閥位域壓差值的優化設計,分析壓差最大值與最小值兩者之間的動態關系,計算最優參數值,減小供暖系統的能耗。經過實驗驗證,本文提出的方法可以有效降低能源消耗,具有極高的實用性,希望本文的研究能為供暖系統閥位域壓差值優化設計提供技術支持。
關鍵詞:動態約束條件;供暖系統;閥位域
中圖分類號:TU833 文獻標識碼:A 文章編號:1003-5168(2019)34-0098-03
Optimal Design of Pressure Difference in Valve Position Domain of
Heating System Based on Dynamic Constraints
JIANG Zhuzhou
(Fushan Thermal Group Co., Ltd.,Yantai Shandong 265500)
Abstract: The traditional heating system has poor dynamic regulation ability, it is difficult to ensure the dynamic stability of water conservancy, and it will bring the disadvantage of large energy consumption. Based on the analysis of the dynamic influencing factors of the heating system, the dynamic constraint conditions for hydraulic stability of each branch in the integrated pipeline are clarified. Based on this, the optimal design of the pressure difference value in the valve position domain of the heating system is analyzed, and the maximum and minimum pressure differences are analyzed Value the dynamic relationship between the two, calculate the optimal parameter value, reduce the energy consumption of the heating system. After experimental verification, the method in this paper can effectively reduce energy consumption and has a very high practicality. I hope that the research of this paper can provide technical support for the optimal design of valve region pressure difference in heating system.
Keywords: dynamic constraint;heating system;valve field
在集中供暖系統中,通常采用單向回路控制室內溫度,構建系統內熱負荷與支路的動態關系,以及對應的供熱負荷與各個支路之間的關系。當水力動態不穩定時,頻繁地調動水管閥門,將會造成系統動蕩甚至癱瘓,并極大地增加供暖系統的能源消耗[1]。節能優化方法基于水力動態平衡背景,選擇合理的優化參數及約束條件,設計集中供暖系統節能優化模型的算法,開展集中供暖系統的節能優化方法研究。
1 供暖系統動態影響因素分析
供暖系統的能量消耗受客觀因素限制,如供暖地區的供暖期時長、室外溫度、建筑圍護結構的熱工性能參數等。就供暖系統本身而言,閥位域壓差是一種重要的動態影響因素,以其作為動態約束條件進行優化設計[2]。從設計角度出發,結合各管線液體流量計算可得出熱力泵的實際運行速率,根據運行速率與智能化調節閥門的張開程度可分析該狀態下的供暖約束條件,實現基于動態約束條件的系統閥位域壓差值優化。……