| 摘要: |
| 为探索调湿性竹炭（BC）作为建筑填充材料对建筑构件和围护空间热湿性能的影响，测试了其平衡含水率(u)和蒸汽渗透系数(δ)；在WUFI Plus软件中选择3组气候区的6个代表城市，对18组外墙进行了全年热湿性能模拟.湿物性测试结果表明：在测试范围内与3种竹板相比，BC调湿容量在相对湿度为334%～854%时得到扩大；BC蒸汽渗透系数为932×10-11kg/(m·s·Pa)，是竹板的100～2132倍.建筑构造和围护空间热湿性能模拟结果显示：BC对构造填充层含湿量起显著稳定作用，并减小了外墙热湿流量和构件内表面温度振幅；BC有助于减小室内空气温湿度振幅，缩短暖通空调系统（HVAC）开启时间，降低围护空间供暖和制冷量，但对加湿和除湿量影响不明显. |
| 关键词: 竹炭 湿物性 外墙 热湿性能 |
| DOI：103969/j.issn.1007 9629201803018 |
| 分类号: |
| 基金项目:广州市科技计划资助项目（201707020041）；国家自然科学基金资助项目（51761135025） |
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| Bamboo Charcoal Hygric Properties Test and Its Impact Simulation on Hygrothermal Performance of Exterior Wall |
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HUANG Zujian1, SUN Yimin1, MUSSO Florian2
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1.School of Architecture, South China University of Technology, Guangzhou 510640, China;2.Chair of Building Construction and Material Science, Technical University of Munich, Munich 80333, Germany
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| Abstract: |
| For clarifying the impact of applying moisture control bamboo charcoal(BC) as a filler on hygrothermal performance of building component and enclosed space, BC samples carbonized at 600℃ were tested for hygric properties including equilibrium moisture content(u) and water vapor transmission coefficient(δ). Afterwards, 18 exterior walls in 6 typical cities from 3climate zones were constructed in WUFI Plus software for full year simulation. Hygric properties test results show that, compared with 3 bamboo based panels, the moisture control capacity of BC is enhanced when relative humidity is 334%854%. Water vapor transmission coefficient of BC is 932×10-11kg/(m·s·Pa), which is 1002132 times that of the bamboo based panels. The building component and enclosed space simulation results show that BC contributes significantly to improve the moisture content stability of construction layers, weaken the annual moisture and heat flow, and reduce internal surface temperature amplitude of the exterior walls. BC can help reduce the annual amplitudes of the indoor relative humidity and air temperature, shorten the heating, ventilation and air conditioning(HVAC) period, and lower the heating and cooling demand, However, the impact on humidification and dehumidification demand is insignificant. |
| Key words: bamboo charcoal(BC) hygric property exterior wall hygrothermal performance |
