【摘要】：長(zhǎng)期以來(lái)，不同的暖通工程師對(duì)于高大空間工業(yè)建筑的采暖設(shè)計(jì)，都有著不同的看法，而合理的采暖方式不僅能改善室內(nèi)環(huán)境，提高室內(nèi)舒適度，而且還能降低采暖能耗，節(jié)約社會(huì)能源。本文以實(shí)際工程的改造為基礎(chǔ)，用數(shù)值模擬的方法對(duì)高大空間工業(yè)建筑不同的采暖方式進(jìn)行了對(duì)比研究。 前期，對(duì)神木某廠房進(jìn)行了調(diào)研，調(diào)研后發(fā)現(xiàn)工業(yè)建筑僅采用散熱器采暖時(shí)，會(huì)出現(xiàn)諸多問(wèn)題，如中部工作區(qū)溫度偏低，且地面有結(jié)冰現(xiàn)象；豎直方向上溫度梯度大，出現(xiàn)了嚴(yán)重的“分層”現(xiàn)象；室內(nèi)升溫慢；熱量集中在頂部存在有大量的能源浪費(fèi)等。因此有了對(duì)廠房采暖系統(tǒng)的改造和論文主體的提出。 之后，通過(guò)理論對(duì)比分析，并且運(yùn)用AIRPAK數(shù)值模擬軟件，對(duì)工業(yè)建筑常用的五種采暖方式，即散熱器采暖、輻射采暖、輻射采暖+散熱器值班采暖、熱風(fēng)采暖+散熱器值班采暖和橫向熱風(fēng)幕采暖，進(jìn)行了數(shù)值模擬。在保證工作區(qū)平均溫度一定的條件下，計(jì)算出不同采暖工況下工作區(qū)溫度場(chǎng)、豎直方向上的溫度梯度，并對(duì)采暖能耗進(jìn)行了分析比對(duì)。結(jié)果顯示： （1）工作區(qū)溫度分布均勻性從好到較差的依次為：輻射采暖+散熱器值班采暖、輻射采暖、熱風(fēng)采暖+散熱器值班采暖、橫向熱風(fēng)幕采暖、散熱器采暖； （2）輻射采暖+散熱器值班采暖、輻射采暖、橫向熱風(fēng)幕采暖、熱風(fēng)采暖+散熱器值班采暖和散熱器采暖在垂直方向上的溫度梯度分別為0.21℃/m2、0.23℃/m2、0.28℃/m2、0.35℃/m2、0.61℃/m2； （3）橫向熱風(fēng)幕采暖、輻射采暖、熱風(fēng)采暖+散熱器值班采暖、輻射采暖+散熱器值班采暖的節(jié)能率分別為傳統(tǒng)散熱器采暖形式的28%、26%、22%、18%。 當(dāng)采用輻射采暖時(shí)，，若適當(dāng)?shù)慕档?-3℃的設(shè)計(jì)溫度，模擬后得出的輻射采暖、輻射采暖+散熱器值班采暖的節(jié)能率升高至33%與30%，其節(jié)能效果更加明顯。 模擬結(jié)果可為今后高大空間工業(yè)廠房的采暖設(shè)計(jì)提供有益參考。
[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

本文編號(hào)：2237856