高大空间工业建筑采暖方式的对比研究

发布时间：2018-09-11 21:14

【摘要】：长期以来，不同的暖通工程师对于高大空间工业建筑的采暖设计，都有着不同的看法，而合理的采暖方式不仅能改善室内环境，提高室内舒适度，而且还能降低采暖能耗，节约社会能源。本文以实际工程的改造为基础，用数值模拟的方法对高大空间工业建筑不同的采暖方式进行了对比研究。 前期，对神木某厂房进行了调研，调研后发现工业建筑仅采用散热器采暖时，会出现诸多问题，如中部工作区温度偏低，且地面有结冰现象；竖直方向上温度梯度大，出现了严重的“分层”现象；室内升温慢；热量集中在顶部存在有大量的能源浪费等。因此有了对厂房采暖系统的改造和论文主体的提出。 之后，通过理论对比分析，并且运用AIRPAK数值模拟软件，对工业建筑常用的五种采暖方式，即散热器采暖、辐射采暖、辐射采暖+散热器值班采暖、热风采暖+散热器值班采暖和横向热风幕采暖，进行了数值模拟。在保证工作区平均温度一定的条件下，计算出不同采暖工况下工作区温度场、竖直方向上的温度梯度，并对采暖能耗进行了分析比对。结果显示： （1）工作区温度分布均匀性从好到较差的依次为：辐射采暖+散热器值班采暖、辐射采暖、热风采暖+散热器值班采暖、横向热风幕采暖、散热器采暖； （2）辐射采暖+散热器值班采暖、辐射采暖、横向热风幕采暖、热风采暖+散热器值班采暖和散热器采暖在垂直方向上的温度梯度分别为0.21℃/m2、0.23℃/m2、0.28℃/m2、0.35℃/m2、0.61℃/m2； （3）横向热风幕采暖、辐射采暖、热风采暖+散热器值班采暖、辐射采暖+散热器值班采暖的节能率分别为传统散热器采暖形式的28%、26%、22%、18%。 当采用辐射采暖时，，若适当的降低2-3℃的设计温度，模拟后得出的辐射采暖、辐射采暖+散热器值班采暖的节能率升高至33%与30%，其节能效果更加明显。 模拟结果可为今后高大空间工业厂房的采暖设计提供有益参考。
[Abstract]:For a long time, different HVAC engineers have different views on the heating design of industrial buildings in large space, and reasonable heating methods can not only improve indoor environment, increase indoor comfort, but also reduce heating energy consumption. Economize on social energy. Based on the transformation of practical engineering, this paper makes a comparative study on different heating modes of industrial buildings in large space by numerical simulation. In the early stage, a factory in Shenmu was investigated. After investigation, it was found that when industrial buildings only use radiator heating, there will be many problems, such as the low temperature in the central working area and the ice phenomenon on the ground, and the large vertical temperature gradient. There is a serious phenomenon of stratification, slow indoor warming, and a large amount of energy waste at the top of the heat concentration. Therefore, there is the transformation of the workshop heating system and the main body of the paper. After that, through theoretical comparison and analysis, and using AIRPAK numerical simulation software, five kinds of heating methods commonly used in industrial buildings, namely radiator heating, radiation heating radiator on duty heating, are applied to industrial buildings. The hot air heating radiator on duty heating and the transverse hot air curtain heating are numerically simulated. Under the condition that the average temperature of the working area is constant, the temperature gradient in the vertical direction of the working area under different heating conditions is calculated, and the heating energy consumption is analyzed and compared. The results show that: (1) the uniformity of temperature distribution in the working area from good to bad is as follows: radiating radiator on duty, radiation heating, hot air heating radiator on duty heating, transverse hot air curtain heating, radiator heating; (2) the temperature gradient of the radiating radiator on duty, radiation heating, transverse hot air curtain heating, hot wind heating radiator on duty heating and radiator heating in the vertical direction is 0.21 鈩

本文编号：2237856