不同散热末端耦合运行调节方法
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摘要
针对目前集中供热系统热量提供的不准确和用户端的热力失调等问题,提出3种对不同末端用户进行耦合计算的方法.采用水力失调度和热力失调度作为判断依据,进而由综合失调度进行分析比较,并通过具体实例计算分析.结果表明:加权值计算方法耦合的一次侧运行调节公式更适合指导供热系统的运行调节.
At present,the central heating system is operated and adjusted according to the end-user as a type of heat dissipation mode,which leads to the inaccuracy of the system heat supply and the thermal imbalance of the end-user.In this paper,three kinds of coupling ways for the different end-user heating parameters were calculated using hydraulic imbalance degree and thermal imbalance degree as the bases,and then compared through the comprehensive imbalance degree and the calculation analysis results of the examples.The results show that a side operation adjustment formula coupled by the weighted value calculation method is more suitable for guiding the operation of the heating system.
At present,the central heating system is operated and adjusted according to the end-user as a type of heat dissipation mode,which leads to the inaccuracy of the system heat supply and the thermal imbalance of the end-user.In this paper,three kinds of coupling ways for the different end-user heating parameters were calculated using hydraulic imbalance degree and thermal imbalance degree as the bases,and then compared through the comprehensive imbalance degree and the calculation analysis results of the examples.The results show that a side operation adjustment formula coupled by the weighted value calculation method is more suitable for guiding the operation of the heating system.
引文
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[2]WANG Xiao,LIN Fu,ZHAO Xiling,et al.Thermodynamic analysis of a central heating system combing the urban heat network with geothermal energy[C]∥ASME 2013 7th International Conference on Energy Sustainability Collocated with the ASME 2013Heat Transfer Summer Conference and the ASME 2013 11th International Conference on Fuel Cell Science,Engineering and Technology.[S.l.]:ASME,2013:14-19.DOI:10.1115/es2013-18285.
[3]晋娜娜,田琦,王美萍,等.基于供热调节方式的混水直连模式的适用性[J].华侨大学学报(自然科学版),2014,35(1):72-75.DOI:10.11830/ISSN.1000-5013.2014.01.0072.
[4]ZHU Xiaojing,MOROOKA S,OKA Y.Numerical investigation of grid spacer effect on heat transfer of supercritical water flows in a tight rod bundle[J].International Journal of Thermal Sciences,2014,76(2):245-257.DOI:10.1016/j.ijthermalsci.2013.10.003.
[5]GU Wei,WU Chenyu,WANG Jun,et al.Optimal operation for integrated energy system considering thermal inertia of district heating network and buildings[J].Applied Energy,2017,199(5):234-246.DOI:10.1016/j.apenergy.2017.05.004.
[6]关银俊.北京建筑大学大兴校区:区域燃气锅炉房调控运行分析[D].北京:北京建筑大学,2016.
[7]CAO Jingfu,LI Mingcai,WANG Min,et al.Effects of climate change on outdoor meteorological parameters for building energy-saving design in the different climate zones of China[J].Energy and Buildings,2017,146(4):65-72.DOI:10.1016/j.enbuild.2017.04.045.
[8]ZAKHAREVICH A E.The influence of the daily fluctuations of outside air temperature on the indoor climate[J].2016,15(6):476-480.DOI:10.21122/2227-1031-2016-15-6-476-480.
[9]张美玲,刘曙光.区域供热系统的热负荷预测方法研究[J].山西建筑,2018,44(3):120-121.DOI:10.3969/j.issn.1009-6825.2018.03.065.
[10]LI Yemao,XIA Jianjun,SU Yingbo,et al.Systematic optimization for the utilization of low-temperature industrial excess heat for district heating[J].Energy,2018,144(1):984-991.DOI:10.1016/j.energy.2017.12.048.
[11]KANG Zhiqiang,MENG Qin,YANG Xue,et al.Analysis of the energy consumption and economic for combined heating supply system based on groundwater heat pump and boiler plant[J].Procedia Engineering,2016,146(6):530-535.DOI:10.1016/j.proeng.2016.06.391.
[12]CAO Bin,ZHU Yingxin,LI Min,et al.Individual and district heating:A comparison of residential heating modes with an analysis of adaptive thermal comfort[J].Energy and Buildings,2014,78(78):17-24.DOI:10.1016/j.enbuild.2014.03.063.
[13]袁炯炯,孟庆林,袁彦峰.厦门地区典型农村住宅夏季室内热环境实测与分析[J].华侨大学学报(自然科学版),2017,38(1):53-57.DOI:10.11830/ISSN.1000-5013.201701010.
[14]YAN Feng.Heating energy saving control system based on differential evolution algorithm[J].Journal of Shenyang University of Technology,2017,39(3):328-332.DOI:10.7688/j.issn.1000-1646.2017.03.16.
[15]赵蕾,王嘉,朱立东,等.间接连接区域供热系统动态特性及控制策略仿真[J].热科学与技术,2014(2):142-149.DOI:10.13738/j.issn.1671-8097.2014.02.005.
[16]李静,杨俊红,王朴方,等.集中供热系统运行能效评价及节能潜力分析[J].区域供热,2017(3):7-14.DOI:10.16641/j.cnki.cn11-3241/tk.2017.03.002.
[17]贺平,孙刚.供热工程[M].4版.北京:中国建筑工业出版社,1993:279-280.
[18]王潇.地温热水地面辐射供暖系统调节的研究[D].哈尔滨:哈尔滨工业大学,2006.
[19]李德英.供热工程[M].北京:中国建筑工业出版社,2004.