地板辐射供暖系统能耗计算

分析了低温地板辐射供暖系统的运行方式、热源种类、调节控制模式及当地气象条件、建筑物保温程度和热性能等多种因素对能耗的影响.给出了不同供暖方式下,保温程度不同的建筑物的热损失,分析了辐射供暖热负荷变化时在热水温度调节方面的节能性.提出了这类系统能耗分析的思路和计算方法,在建筑负荷计算方面,可以采用改良温频法,在设备模拟方面,可以使用稳态的简化模拟法.上述方法既方便、节省计算机机时,对于输入条件的要求也不象逐时分析方法那样严苛,并具有一定的准确性.给出了辐射采暖常用热源设备电锅炉、燃料锅炉及媒体输送设备水泵的能耗计算公式以供参考.指出须对国内常用热源设备的性能参数和负荷特性作进一步的基础研究,以便为实际计算提供必要的参数.

An Energy Analysis Method for Radiant Floor Heating System

The influence of the operating model,heat source,control method,local weather condition and building heat preservation level on energy consuming of radiant heating system was analyzed.The heat loss for different heating systems in buildings with different heat insulating levels was listed. The energy saving in radiant heating systems with the adjusted inlet water temperature was also analyzed.The ASHRAE Modified BIN method can be used to simulate building load.Simplified static simulation methods can be used to calculate energy consumption of heat source equipment.These methods are easy to use,simple to input data and can save simulation time while the simulation results are trustworthy.The equations for calculating energy consuming equipments,such as electric boilers,fuel boilers and medium transport equipment water pumps were given in this paper,but further research is needed to provide the functional parameters and load characteristics of equipment.