低温热水辐射地板稳定升温计算模型
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摘要
针对地板稳定升温过程,根据热平衡原理建立地板升温计算模型,给出地板升温表达式,利用该式可方便快捷地预测地板升温时间及地板终值温度。为验证方程有效性,通过改变供水温度、管间距、初始温度条件,将地板升温测试数据与方程计算结果进行比较,显示两者最大误差为5.8%,因此可将该模型用于实际;同时实测与计算结果一致显示地板升温过程为指数变化规律。
In order to find out the law of floor heating process,the calculated model of the floor heating process was established according to the principle of heat balance in which the equation to forecast the floor temperature rising time and final temperature. The model was validated against a group of new datasets obtained by field measurements under the conditions with different water temperature,tube spacing and environmental temperature on the floor heating process.The results show that the relative error between the measured data and calculated results is only 5.8%. Therefore,the proposed mathematical model can give reliable results for real applications. Also,the agreement between experiment and calculation result shows that the floor temperature exhibits an exponential relationship with the heating time.
In order to find out the law of floor heating process,the calculated model of the floor heating process was established according to the principle of heat balance in which the equation to forecast the floor temperature rising time and final temperature. The model was validated against a group of new datasets obtained by field measurements under the conditions with different water temperature,tube spacing and environmental temperature on the floor heating process.The results show that the relative error between the measured data and calculated results is only 5.8%. Therefore,the proposed mathematical model can give reliable results for real applications. Also,the agreement between experiment and calculation result shows that the floor temperature exhibits an exponential relationship with the heating time.
引文
[1] Zhou Guobing,He Jing. Thermal performance of a radiant floor heating system with different heat storage materials and heating pipes[J]. Applied Energy,2015,138:648—660.
[2] Wang Dengjia,Liu Yanfeng,Wang Yingying,et al.Numerical and experimental analysis of floor heat storage and release during an intermittent in-slab floor heating process[J]. Applied Thermal Engineering,2014,62(2):398—406.
[3] Zhao Kang, Liu Xiaohua, Jiang Yi. Dynamic performance of water-based radiant floors during start-up and high-intensity solar radiation[J]. Solar Energy,2014,101(3):232—244.
[4]牛润卓,邓启红.低温地板辐射采暖预见性间歇运行特性的研究[J].建筑热能通风空调,2008,27(3):10—13.[4] Niu Runzhuo,Deng Qihong. A parametric study on predictive control of intermittently operated radiant floor system[J]. Building Energy&Environment,2008,27(3):10—13.
[5] JGJ 142—2012,辐射供暖供冷技术规程[S].[5] JGJ 142—2012, Technical specification for radiant heating and cooling[S].
[6]杨德伟,王振兴.地板采暖传热过程分析[J].工程热物理学报,2007,28(3):472—474.[6] Yang Dewei,Wang Zhenxing. The analysis of heat transfer process in floor heating[J]. Journal of Engineering Thermophysics,2007,28(3):472—474.
[7]于燕玲,宗杰,涂光备,等.地板辐射供暖房间温度调节方法[J].煤气与热力,2005,25(5):7—10.[7] Yu Yanling,Zong Jie,Tu Guangbei,et al. Method of temperature regulation in radiant floor heating room[J].Gas&Heat,2005,25(5):7—10.
[8] Ahn B C,Song J Y. Control characteristics and heating performance analysis of automatic thermostatic valves for radiant slab heating system in residential apartments[J]. Energy,2010,35(4):1615—1624.
[9] GB 50736—2012,民用建筑供暖通风与空气调节设计规范[S].[9] GB 50736—2012,Design code for heating ventilation and air conditioning of civil buildings[S].
[10] Linton R,Frutiger T,Blanc S,et al. American society of heating,refrigerating and air conditioning engineers,HVAC systems and equipment, panel heating and cooling[S]. ASHRAE Handbook-2008, Atlanta:ASHRAE Inc,2008,Chapter 6.
[11] European Committee for Standardization. European standard EN 1264 floor heating-systems and components[S],1997.
[12]张玲,黄奕沄,陈光明.双回型辐射地板表面平均温度测量位置的模拟与分析[J].暖通空调,2004,34(6):23—27.[12] Zhang Ling,Huang Yi,Chen Guangming. Simulation and analysis of measuring position of radiant floor average surface temperature for two-pass style systems[J]. HV&AC,2004,34(6):23—27.
[13]郭富军,杨昌智.低温热水地板辐射采暖的控制方式[J].建筑热能通风空调,1999,18(3):50—52.[13] Guo Fujun,Yang Changzhi. Control methods of lowtemperature water floor radiant heating system[J].Building Energy&Environment,1999,18(3):50—52.
[14]马云,蔺洁,陈超,等.热水地面辐射供暖系统热响应特性实验研究[J].暖通空调,2016,46(12):125—131.[14] Ma Yun,Lin Jie,Chen Chao,et al. Experimental analysis on the thermal response characteristics of radiant floor heating systems[J]. HV&AC,2016,46(12):125—131.
[15] Larsen S F,Filippín C,Lesino G. Transient simulation of a storage floor with a heating/cooling parallel pipe system[J]. Building Simulation,2010,3(2):105—115.
[16]蔺洁,陈超,李清清.回折型布置方式低温热水地板辐射换热器传热性能[J].北京工业大学学报,2012,38(10):1570—1575.[16] Lin Jie, Chen Chao, Li Qingqing. Heat transfer properties of hot water floor heat exchanger with a twopass style system[J]. Journal of Beijing University of Technology,2012,38(10):1570—1575.
[2] Wang Dengjia,Liu Yanfeng,Wang Yingying,et al.Numerical and experimental analysis of floor heat storage and release during an intermittent in-slab floor heating process[J]. Applied Thermal Engineering,2014,62(2):398—406.
[3] Zhao Kang, Liu Xiaohua, Jiang Yi. Dynamic performance of water-based radiant floors during start-up and high-intensity solar radiation[J]. Solar Energy,2014,101(3):232—244.
[4]牛润卓,邓启红.低温地板辐射采暖预见性间歇运行特性的研究[J].建筑热能通风空调,2008,27(3):10—13.[4] Niu Runzhuo,Deng Qihong. A parametric study on predictive control of intermittently operated radiant floor system[J]. Building Energy&Environment,2008,27(3):10—13.
[5] JGJ 142—2012,辐射供暖供冷技术规程[S].[5] JGJ 142—2012, Technical specification for radiant heating and cooling[S].
[6]杨德伟,王振兴.地板采暖传热过程分析[J].工程热物理学报,2007,28(3):472—474.[6] Yang Dewei,Wang Zhenxing. The analysis of heat transfer process in floor heating[J]. Journal of Engineering Thermophysics,2007,28(3):472—474.
[7]于燕玲,宗杰,涂光备,等.地板辐射供暖房间温度调节方法[J].煤气与热力,2005,25(5):7—10.[7] Yu Yanling,Zong Jie,Tu Guangbei,et al. Method of temperature regulation in radiant floor heating room[J].Gas&Heat,2005,25(5):7—10.
[8] Ahn B C,Song J Y. Control characteristics and heating performance analysis of automatic thermostatic valves for radiant slab heating system in residential apartments[J]. Energy,2010,35(4):1615—1624.
[9] GB 50736—2012,民用建筑供暖通风与空气调节设计规范[S].[9] GB 50736—2012,Design code for heating ventilation and air conditioning of civil buildings[S].
[10] Linton R,Frutiger T,Blanc S,et al. American society of heating,refrigerating and air conditioning engineers,HVAC systems and equipment, panel heating and cooling[S]. ASHRAE Handbook-2008, Atlanta:ASHRAE Inc,2008,Chapter 6.
[11] European Committee for Standardization. European standard EN 1264 floor heating-systems and components[S],1997.
[12]张玲,黄奕沄,陈光明.双回型辐射地板表面平均温度测量位置的模拟与分析[J].暖通空调,2004,34(6):23—27.[12] Zhang Ling,Huang Yi,Chen Guangming. Simulation and analysis of measuring position of radiant floor average surface temperature for two-pass style systems[J]. HV&AC,2004,34(6):23—27.
[13]郭富军,杨昌智.低温热水地板辐射采暖的控制方式[J].建筑热能通风空调,1999,18(3):50—52.[13] Guo Fujun,Yang Changzhi. Control methods of lowtemperature water floor radiant heating system[J].Building Energy&Environment,1999,18(3):50—52.
[14]马云,蔺洁,陈超,等.热水地面辐射供暖系统热响应特性实验研究[J].暖通空调,2016,46(12):125—131.[14] Ma Yun,Lin Jie,Chen Chao,et al. Experimental analysis on the thermal response characteristics of radiant floor heating systems[J]. HV&AC,2016,46(12):125—131.
[15] Larsen S F,Filippín C,Lesino G. Transient simulation of a storage floor with a heating/cooling parallel pipe system[J]. Building Simulation,2010,3(2):105—115.
[16]蔺洁,陈超,李清清.回折型布置方式低温热水地板辐射换热器传热性能[J].北京工业大学学报,2012,38(10):1570—1575.[16] Lin Jie, Chen Chao, Li Qingqing. Heat transfer properties of hot water floor heat exchanger with a twopass style system[J]. Journal of Beijing University of Technology,2012,38(10):1570—1575.