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林业科学 ›› 2018, Vol. 54 ›› Issue (11): 73-78.doi: 10.11707/j.1001-7488.20181111

• 论文与研究报告 • 上一篇    下一篇

实木复合地采暖地板运行工况下的甲醛和VOC释放浓度

朱科1, 杜光月2, 郑焕琪2, 周玉成2   

  1. 1. 山东建筑大学热能工程学院 济南 250101;
    2. 山东建筑大学信息与电子工程学院 济南 250101
  • 收稿日期:2018-04-02 修回日期:2018-07-31 出版日期:2018-11-25 发布日期:2018-12-04
  • 基金资助:
    泰山学者优势特色学科人才团队(2015162);国家自然科学基金项目(41702325)。

The Concentration of Formaldehyde and VOC Released from Running Multi-Layer Parquet for Ground with Heating System

Zhu Ke1, Du Guangyue2, Zheng Huanqi2, Zhou Yucheng2   

  1. 1. School of Thermal Engineering, Shandong Jianzhu University Jinan 250101;
    2. School of Information and Electrical Engineering, Shandong Jianzhu University Jinan 250101
  • Received:2018-04-02 Revised:2018-07-31 Online:2018-11-25 Published:2018-12-04

摘要: [目的]研究实木复合地采暖地板在冬季运行工况下室内温湿度变化及其对地板甲醛和VOC释放浓度的影响,为地采暖地板使用过程中的室内环境质量控制以及相关地采暖用地板的质量检测标准提供参考依据。[方法]构建一个面积约36 m2的多层实木复合地板辐射供暖系统,供暖末端采用低温热水地板辐射形式。研究供暖季不同运行工况下(包括不同室外温度、不同系统供水温度等)室内温度和湿度分布以及实木复合地采暖地板中甲醛和VOC等有机污染物释放浓度的变化情况,分析地板辐射供暖系统的供热温度分布,探索多层实木复合地采暖地板甲醛和VOC的释放规律及相关影响因素。[结果]在40℃恒定水温地板辐射供暖条件下,室内平均初始温度为14.6℃,甲醛和VOC初始浓度分别为0.01和0.50 mg·m-3,随着持续供暖,室内温度逐渐升高,50 h后室内温度上升为20.3℃,甲醛和VOC释放浓度分别为0.04和0.70 mg·m-3,运行第20天甲醛和VOC释放浓度达到峰值,分别为0.05和0.86 mg·m-3。在供暖温度上升至50℃时,50 h后室内平均温度为24.2℃,甲醛和VOC释放峰值浓度分别上升为0.11和1.01 mg·m-3,在试验供暖周期结束时浓度分别为0.03和0.72 mg·m-3。甲醛和VOC释放浓度与室外温度和室内相对湿度具有一定正相关性,但其波动幅度较小。[结论]多层实木复合地采暖地板的甲醛和VOC释放与室内温湿度都具有正相关性,且受系统运行工况和室外环境的影响;当供暖系统运行温度较高时,在密闭的室内容易造成空气中甲醛等有机污染物含量超标,需进行开窗通风。本研究结果可用于指导实木复合地板采暖系统的使用以及地采暖用地板甲醛和VOC释放限量标准的补充。

关键词: 地板采暖系统, 多层实木复合地板, 挥发性有机化合物, 甲醛释放

Abstract: [Objective] This study focus on a radiant ground with heating system using multi-layer parquet. The indoor temperature and humidity variations, and the concentrations of formaldehyde and volatile organic compounds (VOC) are measured and analyzed in order to provide experimental result for indoor environment quality control of multi-layer parquet for ground with heating system, and as also to provide references of quality standards for multi-layer parquet which is used for ground heating purpose.[Method] A 36 m2 room is used to install the radiant ground heating system. The heat carrier fluid is flowing through pipes under the multi-layer parquet floor and the whole system was running under standard conditions. During the entire heating period of the experiment, the outdoor temperature, temperature of supplying water, indoor temperature and humidity, and the formaldehyde and VOC concentrations were measured at certain time intervals. Based on the recorded data, the differences of temperature distribution and the concentration of formaldehyde and VOC released from multi-layer parquet were analysed. The principle and impact factors of pollutants releasing from multi-layer parquet floor were also discussed.[Result] The result showed that, the initial room temperature was 14.6℃ and the background concentrations of formaldehyde and VOC were 0.01 mg·m-3 and 0.50 mg·m-3, respectively. The temperature of supplying water was firstly set at 40℃. The room temperature increased to 20.3℃ after 50 h of heating, and the concentrations of formaldehyde and VOC increased to 0.04 mg·m-3 and 0.70 mg·m-3, respectively. The peak concentrations, which are 0.05 mg·m-3 and 0.86 mg·m-3, appear on the 20th day of the experiment. When the temperature of supplying water was set at 50℃, the room temperature increased to 24.2℃ after 50 h, and the formaldehyde and VOC peak concentrations are 0.11 mg·m-3 and 1.01 mg·m-3 respectively. At the end of the heating experiment, the corresponding reduced to 0.03 mg·m-3 and 0.72 mg·m-3 separately.[Conclusion] During the running period of ground with heating system, the release of formaldehyde and VOC from the multi-layer parquet has a positive correlation to the indoor air temperature and humidity, and influenced by the system running mode and outdoor environment. When the room is insulated and the system is running with high water temperature, the indoor VOC concentration might exceed the standard and the windows need to be open. The result of this study could be used to guide the use of multi-layer parquet for ground with heating system and also as a reference of formaldehyde and VOC release limit standards for such kind of system.

Key words: floor for ground with heating system, multi-layer parquet, volatile organic compounds (VOC), formaldehyde release

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