低温地板辐射采暖系统的实际运行工况研究
|
摘要
低温地板辐射采暖在我国起步较晚，目前国内对低温地板辐射采暖系统运行的实际工况、技术特点、运行机理的认识尚不完整，设计和施工经验缺乏。为此，本文进行了低温地板辐射采暖的实验研究。本研究重点分析了低温地板辐射采暖的特点和传热机理，并在此基础上建立了设计中常用的回字型低温地板辐射采暖的数学模型，分析了此种采暖系统的热工性能，确立了地板单位面积散热量、地板表面平均温度与地面覆盖层、供回水平均温度、室外温度及其它参数之间的定量关系；另外进行了冬季地板辐射采暖系统的实验研究，分析了地面下和室内的温度分布情况。通过实验对比了不同的地下保温层、地面覆盖层、供水温度、流量对地板内及室内空气温度分布的影响，同时还进行了侧墙辅助加热的实验研究。通过对大量的实验数据的分析，总结出了低温地板辐射采暖的传热规律，并通过对工作中低温地板辐射采暖系统的大量施工经验的总结，归纳出一套切实可行的标准工法，为以后的系统设计和施工提供了很好的参考依据。最后，结合工程实例，对另一种低温辐射采暖方式—低温辐射电热膜采暖的特点、施工等方面，进行了简单的介绍和经济性分析。
Low-temperature water floor radiant heating system in engineering was newly developed in China. The technology character and operation mechanism of the system have not been understood maturely. We lack the experience of design and engineering .Because of this, we study the low temperature water floor heating system. The character and mechanism of heat transfer in this system are mainly analyzed, and based on it, the paper put forward a mathematical model of dual-spiral shape laid radiant floor heating system generally used in design. The paper analyzed the thermal performance of the system and determined the quantitative relation between the heat-dispersing rate per unit area, the floor surface mean temperature and the ground covering, the mean temperature of the supply and the return water, outdoor temperature etc. the paper determined the relation between the water temperature, the flux of water and the outside air temperature. In addition, we also studied the low-temperature water floor radiant heating experiment in winter. The underground and indoor air temperature distribution is analysed. Based on the experiment data, the paper compared the influence of the different underground heat preservation layer, the ground covering, the water temperature and the flux of water on the underground and the indoor air temperature distribution. Meantime, the experiment on the wall auxiliary heating system was also carried on. By analysing large amount of data, heat transfer rules in this system are summed up, and by making a summary of. large amount of engineering experience of floor radiant heating system ,we drew a doable criterion of engineering method, which provide reference for designing and engineering.Finally, another kind of low-temperature radiant heating system which was carried through electricity heating membrane was introduced and analyzed economically.
Low-temperature water floor radiant heating system in engineering was newly developed in China. The technology character and operation mechanism of the system have not been understood maturely. We lack the experience of design and engineering .Because of this, we study the low temperature water floor heating system. The character and mechanism of heat transfer in this system are mainly analyzed, and based on it, the paper put forward a mathematical model of dual-spiral shape laid radiant floor heating system generally used in design. The paper analyzed the thermal performance of the system and determined the quantitative relation between the heat-dispersing rate per unit area, the floor surface mean temperature and the ground covering, the mean temperature of the supply and the return water, outdoor temperature etc. the paper determined the relation between the water temperature, the flux of water and the outside air temperature. In addition, we also studied the low-temperature water floor radiant heating experiment in winter. The underground and indoor air temperature distribution is analysed. Based on the experiment data, the paper compared the influence of the different underground heat preservation layer, the ground covering, the water temperature and the flux of water on the underground and the indoor air temperature distribution. Meantime, the experiment on the wall auxiliary heating system was also carried on. By analysing large amount of data, heat transfer rules in this system are summed up, and by making a summary of. large amount of engineering experience of floor radiant heating system ,we drew a doable criterion of engineering method, which provide reference for designing and engineering.Finally, another kind of low-temperature radiant heating system which was carried through electricity heating membrane was introduced and analyzed economically.
引文
[1] 王荣光，低温地板辐射采暖，煤气与热力，1999，19（4）：53~55
[2] [苏] JI.A.T И JI И H，屈海东译，热空气辐射采暖，建筑工业出版社，1959年，第一版
[3] 杨巍，低温地板辐射采暖的性能研究；[硕士学位论文]，天津大学，1999
[4] 张纯安，地板辐射采暖的模拟及优化设计；[硕士学位论文]，天津；天津大学，1988
[5] 王荣光、沈天行、郑维民，太阳能、地热利用与地板辐射供暖，建筑节能，2002，37：54~61
[6] 龙惟定，试论我国暖通空调业的可持续发展，暖通空调，1999，29（3）：25~30
[7] 杨文帅、王荣光、凌继红，从生理卫生和舒适的角度论述地板辐射供暖的特点，建筑节能，2002，37：47~53
[8] 冯明月、刘志刚，低温地板辐射采暖系统的优点，黑龙江科技信息，2002，（4）102~102
[9] 宗立华，低温地热水塑料管地板辐射采暖的实验研究：[硕士学位论文]，天津；天津大学，1990
[10] 王冬梅、刘志伟，低温地板辐射采暖系统的设计与应用，黑龙江科技信息，2002，（6）：83~88
[11] 程锦江，低温地板辐射采暖设计中的一些问题，新疆有色金属，2002，25（1）：59~62
[12] 王荣光、张纯安，地板辐射采暖的设计及简化计算，公用科技，1990，（4）：41~44
[13] Hanibuchi, H., and S. Hokoi, Basic study on radiative and convective heat exchange in a room with floor heating, ASHRAE Transactions, 1998, 104(1B)：1098~1105
[14] 章熙民、任泽霈、梅飞鸣等，传热学（第二版），北京：中国建筑工业出版社，1992.27~31
[15] 陆耀庆，供暖通风设计手册（第一版），北京：中国建筑工业出版社，1987.262~282
[16] 贺平、孙刚，供热工程（第三版），北京：中国建筑工业出版社，1996.140~152
[17] 凌继红、张于峰、董颖等，低温热水地板辐射供暖系统的理论研究，工程热物理学报，2002，23（6）：145~148
[18] Launder, B.E., On the calculation of convective heat transfer in complex turbulent flows, J. Heat Transfer, 110：1112~1128
[19] Berglund, L., R. Rascati, and M.L. Markel, Radiant heating and control for comfort during transient conditions, ASHRAE Transactions, 1982, 88(2)：765~775
[20] 贾明彦，介绍塑料管低温地板辐射采暖方式，陕西煤炭技术，1996，（4）：
27~30
[21] 吴大鸣、刘颖，地板辐射采暖用塑料管材，低温热水地板辐射采暖技术论文集，秦皇岛：建设部建筑节能中心，2000.46~48
[22] 王荣光、郑钦周，塑料管材在供暖系统中的应用现状与选择方法，天津城市建设学院，2002，8（3）：199~203
[23] 于慧俐、茅清希，低温地板辐射采暖系统的经济性分析，建筑热能通风空调，2002，21（2）：8~10
[24] 李伟，低温地板辐射采暖的分析，西北建筑工程学院学报：自然科学版，2001，018（003）：69~72
[25] 陶有生、桂正茂，聚丁烯管低温地板辐射采暖，新型建筑材料，1999，（7）：21~23
[26] 董素清，高健，低温地板辐射供暖应用特点与设计中的问题，北京建筑工程学院学报，2002，17（2）：29~32
[27] 王荣光、张纯安，地板辐射采暖结构的技术经济优化，公用科技，1991，（2）：35~39
[28] 陆耀庆，供暖通风设计手册，北京：中国建筑工业出版社，1987.267~26
[29] J.J.Bartion, Electric Floor Warming, Newnec，1950
[30] 胡丕英，低温地板辐射采暖应用分析，山西建筑，2002，28（3）：96~97
[31] 于慧俐、茅清希，低温地板辐射采暖系统的经济性分析，建筑热能通风空调，2002，21（2）：8~10
[2] [苏] JI.A.T И JI И H，屈海东译，热空气辐射采暖，建筑工业出版社，1959年，第一版
[3] 杨巍，低温地板辐射采暖的性能研究；[硕士学位论文]，天津大学，1999
[4] 张纯安，地板辐射采暖的模拟及优化设计；[硕士学位论文]，天津；天津大学，1988
[5] 王荣光、沈天行、郑维民，太阳能、地热利用与地板辐射供暖，建筑节能，2002，37：54~61
[6] 龙惟定，试论我国暖通空调业的可持续发展，暖通空调，1999，29（3）：25~30
[7] 杨文帅、王荣光、凌继红，从生理卫生和舒适的角度论述地板辐射供暖的特点，建筑节能，2002，37：47~53
[8] 冯明月、刘志刚，低温地板辐射采暖系统的优点，黑龙江科技信息，2002，（4）102~102
[9] 宗立华，低温地热水塑料管地板辐射采暖的实验研究：[硕士学位论文]，天津；天津大学，1990
[10] 王冬梅、刘志伟，低温地板辐射采暖系统的设计与应用，黑龙江科技信息，2002，（6）：83~88
[11] 程锦江，低温地板辐射采暖设计中的一些问题，新疆有色金属，2002，25（1）：59~62
[12] 王荣光、张纯安，地板辐射采暖的设计及简化计算，公用科技，1990，（4）：41~44
[13] Hanibuchi, H., and S. Hokoi, Basic study on radiative and convective heat exchange in a room with floor heating, ASHRAE Transactions, 1998, 104(1B)：1098~1105
[14] 章熙民、任泽霈、梅飞鸣等，传热学（第二版），北京：中国建筑工业出版社，1992.27~31
[15] 陆耀庆，供暖通风设计手册（第一版），北京：中国建筑工业出版社，1987.262~282
[16] 贺平、孙刚，供热工程（第三版），北京：中国建筑工业出版社，1996.140~152
[17] 凌继红、张于峰、董颖等，低温热水地板辐射供暖系统的理论研究，工程热物理学报，2002，23（6）：145~148
[18] Launder, B.E., On the calculation of convective heat transfer in complex turbulent flows, J. Heat Transfer, 110：1112~1128
[19] Berglund, L., R. Rascati, and M.L. Markel, Radiant heating and control for comfort during transient conditions, ASHRAE Transactions, 1982, 88(2)：765~775
[20] 贾明彦，介绍塑料管低温地板辐射采暖方式，陕西煤炭技术，1996，（4）：
27~30
[21] 吴大鸣、刘颖，地板辐射采暖用塑料管材，低温热水地板辐射采暖技术论文集，秦皇岛：建设部建筑节能中心，2000.46~48
[22] 王荣光、郑钦周，塑料管材在供暖系统中的应用现状与选择方法，天津城市建设学院，2002，8（3）：199~203
[23] 于慧俐、茅清希，低温地板辐射采暖系统的经济性分析，建筑热能通风空调，2002，21（2）：8~10
[24] 李伟，低温地板辐射采暖的分析，西北建筑工程学院学报：自然科学版，2001，018（003）：69~72
[25] 陶有生、桂正茂，聚丁烯管低温地板辐射采暖，新型建筑材料，1999，（7）：21~23
[26] 董素清，高健，低温地板辐射供暖应用特点与设计中的问题，北京建筑工程学院学报，2002，17（2）：29~32
[27] 王荣光、张纯安，地板辐射采暖结构的技术经济优化，公用科技，1991，（2）：35~39
[28] 陆耀庆，供暖通风设计手册，北京：中国建筑工业出版社，1987.267~26
[29] J.J.Bartion, Electric Floor Warming, Newnec，1950
[30] 胡丕英，低温地板辐射采暖应用分析，山西建筑，2002，28（3）：96~97
[31] 于慧俐、茅清希，低温地板辐射采暖系统的经济性分析，建筑热能通风空调，2002，21（2）：8~10