低温地板辐射供暖的传热研究及设计应用
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摘要
本文以埋管型低温热水地板供暖为研究对象,建立数值模拟计算的模型,对设计环节中的地板表面散热量的计算进行了定性的研究。并且论述了如何把所得到的数据运用到设计计算中。最后对包头市一幢新建建筑的地板表面温度等参数进行了测试,验证了该系统的可靠性。同时指出在包头地区应该采用节能墙体才能满足设计要求,最大限度体现低温热水地板供暖的优点。
供暖地面散热量计算是一个涉及复杂几何尺寸、复杂边界条件下的复合传热问题,本文给出并讨论了地面层材质与厚度、管间距、管径、水温及室温等因素对地面散热量影响的定量关系。并且应用有限单元法得出板体上下表面温度场及相应的双向传热量,进而得出辐射地板的向上及向下传热量与不同的装饰面层和不同的填充层厚度的关系。同时指出了在设计中应如何处理向下及向上传热量。
通过设计实例论述了如何进行低温热水地板供暖的设计,并且提出了一些本人多年来总结出来的经验。
This article take the pipe installation low temperature hot water floor heating as the research object, establishes the value analog , computation the model, to designed in the link the floor surface heat, dissipating capacity computation to conduct the qualitative research.How and elaborated the data which obtained has utilized to the design calculation in. Finally to Baotou newly built a construction parameter and so on floor surface temperature has carried on the test, has confirmed this system reliability. At the same time pointed out should use the energy conservation wall in the Baotou area to be able to satisfy the design request, maximum limit manifests the low temperature hot water floor heating the merit.The heating ground radiation gauge was involves under the complex geometry size, the complex boundary condition compound heat conduction problem, this article produces and discussed factor and so on ground floor material quality and thickness, tube spacing, caliber, water temperature and room temperature to the ground heat dissipating capacity influence quota relations. And
applies the limited unit law to obtain about the board body the superficial temperature field and the corresponding bidirectional capacity of heat transmission, then obtains radiates the floor to be upward and to the under capacity of heat transmission and the different decoration surface layer and the different packing layer thickness relations. At the same time had pointed out how should process in the design to under and the upward capacity of heat transmission.Elaborated how through the design example has carried on the low temperature hot w^ter floor heating the design, and proposed some myself for many years have summarized experience.
供暖地面散热量计算是一个涉及复杂几何尺寸、复杂边界条件下的复合传热问题,本文给出并讨论了地面层材质与厚度、管间距、管径、水温及室温等因素对地面散热量影响的定量关系。并且应用有限单元法得出板体上下表面温度场及相应的双向传热量,进而得出辐射地板的向上及向下传热量与不同的装饰面层和不同的填充层厚度的关系。同时指出了在设计中应如何处理向下及向上传热量。
通过设计实例论述了如何进行低温热水地板供暖的设计,并且提出了一些本人多年来总结出来的经验。
This article take the pipe installation low temperature hot water floor heating as the research object, establishes the value analog , computation the model, to designed in the link the floor surface heat, dissipating capacity computation to conduct the qualitative research.How and elaborated the data which obtained has utilized to the design calculation in. Finally to Baotou newly built a construction parameter and so on floor surface temperature has carried on the test, has confirmed this system reliability. At the same time pointed out should use the energy conservation wall in the Baotou area to be able to satisfy the design request, maximum limit manifests the low temperature hot water floor heating the merit.The heating ground radiation gauge was involves under the complex geometry size, the complex boundary condition compound heat conduction problem, this article produces and discussed factor and so on ground floor material quality and thickness, tube spacing, caliber, water temperature and room temperature to the ground heat dissipating capacity influence quota relations. And
applies the limited unit law to obtain about the board body the superficial temperature field and the corresponding bidirectional capacity of heat transmission, then obtains radiates the floor to be upward and to the under capacity of heat transmission and the different decoration surface layer and the different packing layer thickness relations. At the same time had pointed out how should process in the design to under and the upward capacity of heat transmission.Elaborated how through the design example has carried on the low temperature hot w^ter floor heating the design, and proposed some myself for many years have summarized experience.
引文
[1] 王荣光.低温地板辐射供暖.煤气与热力,1999,19(4):53-55
[2] 麦太金尔DA.室内气候.龙维定,等,译.上海:上海科学技术出版社,1988
[3] 于国丹,等民用住宅建筑低温辐射供暖特性参数的实验研究.暖通空调,2001(4)1～3
[4] 郭富军,等.低温热水地板辐射供暖的控制方式.建筑热能通风空调,1999,18(3):50-52
[5] 北京市地方标准.低温热水地板辐射供暖应用技术规程(DBJ/T01—49—2000),2000,25～28
[6] 张志刚,等.地板辐射供暖对维护结构保温的要求.建筑热能通风空调,2001(1):20-22 JGJ142-2004 地面辐射供暖技术规程,2004
[7] 冯晓梅,肖勇全.低温地板辐射供暖的动态仿真.建筑热能通风空调,2001(1):20(6):15-18
[8] 孙德兴,等.低温热水地板辐射供暖地面散热量的分析与计算.山东建筑工程学院学报,2002,3
[9] JGJ26-95民用建筑节能设计标准(供暖居住建筑部分)
[10] GBJ19-87供暖通风与空气调节规范
[11] 贺平,孙钢.供热工程(新一版).北京:中国建筑工业出版社,1993
[12] 张熙民,等.传热学.北京:中国建筑工业出版社,1993.101
[13] 陆耀庆.实用供热通风空调设计手册.北京:中国建筑工业出版社,1998
[14] 宗立华.塑料埋管地板辐射供暖的热性能分析.暖通空调,2000,30(1):6-8
[15] 亢燕铭,等.地板辐射供暖的节能效应分析.暖通空调,2001,31(4):4-6
[16] 钟珂,等.辐射供暖房间耗热量分析.暖通空调,2004,34(1):1
[17] 王英辉,等.地板辐射供暖系统热工性能研究.暖通空调,2004,34(1):1
[18] 张玲,等.双回型辐射地板表面平均温度测量位置的模拟与分析.暖通空调,2004,34(6):6
[19] 胡松涛等 地板辐射供暖运行工况的动态仿真,暖通空调,1999,NO.4
[20] Bjarne W Olesen. Radiant floor heating in theory and practice.ASHRAEJ,2002,44(7): 19-22
[21] ASHRAE. 2000 ASHRE Handbook-system and equipment. Panel heating and cooling.6.1-6.4
[22] HofJJ, Dijk D. Challenge and opportunity in Eastern Europe . District Heating and cooling. 1991
[23]Hulbert L.E., etc.: heat flow analysis in panel heating or cooling sections. Case I-uniformly spaced pipes buried within a solid slab.ASHVE trans, Vol.57, 221 -232, 1950
[23]Schutrum L.F., etc: heat exchange in a floor panel heated room ,ASHVE trans,Vol.59,495,1953
[2] 麦太金尔DA.室内气候.龙维定,等,译.上海:上海科学技术出版社,1988
[3] 于国丹,等民用住宅建筑低温辐射供暖特性参数的实验研究.暖通空调,2001(4)1～3
[4] 郭富军,等.低温热水地板辐射供暖的控制方式.建筑热能通风空调,1999,18(3):50-52
[5] 北京市地方标准.低温热水地板辐射供暖应用技术规程(DBJ/T01—49—2000),2000,25～28
[6] 张志刚,等.地板辐射供暖对维护结构保温的要求.建筑热能通风空调,2001(1):20-22 JGJ142-2004 地面辐射供暖技术规程,2004
[7] 冯晓梅,肖勇全.低温地板辐射供暖的动态仿真.建筑热能通风空调,2001(1):20(6):15-18
[8] 孙德兴,等.低温热水地板辐射供暖地面散热量的分析与计算.山东建筑工程学院学报,2002,3
[9] JGJ26-95民用建筑节能设计标准(供暖居住建筑部分)
[10] GBJ19-87供暖通风与空气调节规范
[11] 贺平,孙钢.供热工程(新一版).北京:中国建筑工业出版社,1993
[12] 张熙民,等.传热学.北京:中国建筑工业出版社,1993.101
[13] 陆耀庆.实用供热通风空调设计手册.北京:中国建筑工业出版社,1998
[14] 宗立华.塑料埋管地板辐射供暖的热性能分析.暖通空调,2000,30(1):6-8
[15] 亢燕铭,等.地板辐射供暖的节能效应分析.暖通空调,2001,31(4):4-6
[16] 钟珂,等.辐射供暖房间耗热量分析.暖通空调,2004,34(1):1
[17] 王英辉,等.地板辐射供暖系统热工性能研究.暖通空调,2004,34(1):1
[18] 张玲,等.双回型辐射地板表面平均温度测量位置的模拟与分析.暖通空调,2004,34(6):6
[19] 胡松涛等 地板辐射供暖运行工况的动态仿真,暖通空调,1999,NO.4
[20] Bjarne W Olesen. Radiant floor heating in theory and practice.ASHRAEJ,2002,44(7): 19-22
[21] ASHRAE. 2000 ASHRE Handbook-system and equipment. Panel heating and cooling.6.1-6.4
[22] HofJJ, Dijk D. Challenge and opportunity in Eastern Europe . District Heating and cooling. 1991
[23]Hulbert L.E., etc.: heat flow analysis in panel heating or cooling sections. Case I-uniformly spaced pipes buried within a solid slab.ASHVE trans, Vol.57, 221 -232, 1950
[23]Schutrum L.F., etc: heat exchange in a floor panel heated room ,ASHVE trans,Vol.59,495,1953