地板辐射供暖几种常见问题

本文针对低温地板辐射供暖技术在实践中出现的一些问题,如:房间热负荷问题,地面温度分布不均问题,与散热器供暖系统共用热源问题,填充层的最佳厚度问题,以及地面和墙体的开裂问题,进行了初步探讨,提出了一些解决方法和建议。     

风机盘管和地板辐射联合供暖方式的探讨

实践证明 ,房间设置风机盘管和地板辐射两个系统联合供暖不仅能节约常规能源、而且可以提高环保性 ,同时又可避免系统单独工作时的缺点 ,使室内环境温度快速达到舒适区域     

地板辐射供暖应用分析

阐述低温地板辐射供暖系统具有室内舒适性好、不占用室内使用面积等优点,也指出系统存在初投资高、运行成本高、维修困难、层间传热损失大等不足。通过工程项目方案论证的方法,针对地板辐射供暖系统的初投资成本、运行成本、使用效果、安装和使用中出现的问题,对地板辐射供暖与传统的散热器供暖进行比较与分析,并结合运行管理经验,阐述地板辐射供暖优缺点及适宜应用的条件,综合分析得出散热器供暖系统的整体经济性优于地板辐射供暖系统的结论。     

散热器与低温地板辐射联网供暖系统设计

针对单热源且同时存在散热器供暖与低温地板辐射供暖联网的供暖系统,分析了混水泵并联管网和带旁通的串联管网两种不同形式的供暖系统各自的结构特点、参数选择和优缺点,并给出了两种系统的适用情况。     

浅谈地板辐射供暖技术

地板辐射采暖是一种舒适、环保、节能的现代供暖方式。在诸多供暖技术中,地板辐射供暖技术无疑是热舒适度最好的一种供暖方式。在设计中,不但要对地面构造、热媒、热管系统及分集水器进行合理的设计,还要分别对负荷、散热量和热管水力进行系统的计算,同时加以正确的选材与施工才能充分发挥出地板辐射供暖的技术的优势。     

低温地板辐射供暖节能作用分析

低温地板辐射供暖地板与外围护结构内表面存在辐射换热，散热器供暖房间的散热器附近以及散热器上部热气流与外围护结构存在热流短路。文章在低温地板辐射供暖室比散热器供暖房间室内设计温度降低2℃的情况下，分别对三个典型地区这两种供暖方式在上述情况下造成的房间热负荷和供暖季平均耗热量进行计算。结果表明此条件下，低温地板辐射供暖房间的热负荷可降低10％～15％，节能率约为15％～20％。     

太阳能低温热水地板辐射供暖系统的研究

低温地板辐射供暖具有舒适、节能、清洁等许多优点，这种供暖方式已在我国北方得到广泛的应用。研究、开发廉价和清洁的辐射供暖的低温热源－太阳能，对于大面积推广低温辐射供暖系统具有十分重要的意义。     

低温地板辐射采暖构造层传热模拟

本文针对以哈尔滨为代表的寒冷地区的低温热水地板辐射供暖系统的传热特点和铺设方式,建立了构造层内传热过程的数学模型,分析了低温热水地板辐射供暖系统的热工性能,确定了构造层内温度分布、地板表面温度分布、单位面积散热量等设计指标与管间距、水温、表面材料之间的定量关系。     

塑料类管材在低温热水地板辐射供暖的探讨

塑料类管材，正在低温热水地板辐射采暖中得到越来越广泛的应用。其中，仅有一部分管材，应用于输送热介质，塑料管材同钢管等金属管道相比，其热力学特性有较大区别。本文简要阐明其物理力学特性，并提出其在低温热水地板辐射供暖应用中应注意事项。     

一种新型低温热水地板辐射供暖系统

低温热水地板辐射供热系统具有十分广阔的市场前景，介绍了低温热水地板辐射供暖系统的结构、性能及特点，因其具有节能、不占空间、可自行调节温度、维护运行费用低等优点，将成为供暖领域的一种新的发展趋势。     

Augmented control strategies for radiant floor heating systems

A dynamic model of a radiant floor heating (RFH) system useful for control analysis is developed. The overall model consists of a boiler, distribution system, an embedded tube floor slab and building enclosure. The overall model is described by non‐linear differential equations which were solved using finite numerical methods. Two control strategies for improving the temperature regulation in RFH systems are proposed. These are: a multistage on–off control and an augmented constant gain control (ACGC). Simulation results show that the multistage control maintains zone air temperature close to the setpoint better than the existing on–off control scheme does. Likewise, ACGC gives good zone temperature control compared to the classical proportional control. The ACGC is shown to be robust to changes in weather conditions and internal heat gains. The advantage of the control strategies proposed is that they eliminate the use of outdoor temperature sensors required in some existing control schemes. Being simple and robust, the proposed control schemes are good candidate controls for RFH systems. Copyright © 2002 John Wiley & Sons, Ltd.     

地板辐射式供暖的能耗分析

依据辐射供热室内辐射与对流综合作用的传热规律,计算和分析了地板辐射式采暖房间能耗的构成及影响因素,给出在相同舒适度条件下,几种常见的围护结构地板辐射式供暖房间的能耗随地表面加热温度的变化关系,并与相应的对流式采暧进行了对比。     

A thermal analysis of a radiant floor heating system using SERI‐RES

Both intermittent and continuous heating are widely used for radiant floor heating systems in Korea, Intermittent heating circulates hot water according to a predefined schedule while the continuous heating controls water flow using thermostat control units. The standard version of SERI‐RES has been modified for the numerical simulation of the problem. Results show relatively large temperature swings in the case of intermittent heating with solar availability, although it costs less to implement due to its simplicity in design. On the other hand, the case of continuous heating would avoid such undesirable temperature fluctuations. These results are also verified by experimental evaluations. Copyright © 1999 John Wiley & Sons, Ltd.     

太阳能热水系统结合地板采暖在高层住宅中的应用

介绍太阳能热水系统结合低温热水地板采暖系统的工作原理,以上海地区为例,在高层住宅中应用壁挂式太阳能集热器,可以实现太阳能与建筑一体化。对该太阳能系统进行节能效益分析,结果表明,系统的动态回收期为3.98年。     

空气源-地板辐射采暖系统的应用研究

对地板辐射采暖系统在南方采用空气源热泵作为热源的优势进行了分析;并对设计选型及应用中该注意的问题进行了说明.最后,从长远角度探讨了该系统的发展前景.     

论夏热冬冷地区地板采暖的可行性

2 0 0 1年夏热冬冷地区推出了建筑节能的有关规范 ,以积极推广健康、舒适、节能的住宅温热环境技术。本文对夏热冬冷地区的经济发展状况及地理气候环境特点等作了调查分析 ,并结合国家对该地区的节能规范考察了发展地板采暖的可行性 ,并预测了应用前景。     

Dynamics of three-dimensional temperature field in electrical system of floor heating

In the paper dynamics of a three-dimensional temperature field in the system of direct floor heater was investigated. A step response (heating on curve) and local and global time constants of the device were determined. Then, a spatial-temporal distribution of the field in the system controlled by the on-off regulator was found. The mathematical model of heat propagation was a non-homogeneous and homogeneous equation of a three-dimensional diffusion with an adequate set of boundary conditions. Four methods were applied for the solution of the above: superposition of states (coupled with separation of variables), finite elements, criterion of an averaged time constant and superposition of step characteristics. It was found that time profiles of the temperature depend very strongly on the position of an observing point. All relations were processed numerically. The obtained results are presented in a graphic form. A physical interpretation of the achieved solutions is included.