暖通空调
暖通空調
난통공조
HEATING,VENTILATING & AIR CONDITIONING
2015年
1期
64-67
,共4页
金属面夹芯轻质围护结构%蒸汽渗透%材料湿度%传热系数%热湿分布
金屬麵夾芯輕質圍護結構%蒸汽滲透%材料濕度%傳熱繫數%熱濕分佈
금속면협심경질위호결구%증기삼투%재료습도%전열계수%열습분포
light metal insulating sandwich building envelope%vapor penetration%material humidity%heat transfer coefficient%temperature and humidity distribution
采用稳态热箱实验法，对采用岩棉作为保温材料的金属面夹芯轻质绝热围护结构进行传热传湿实验，研究蒸汽渗透对其热工性能的影响。通过对典型构造试件在稳定传热状态下的温度、湿度和热流的测量和分析，得到了不同蒸汽渗透情况下保温材料层的热湿分布，比较了5种工况下试件热流的差别，分析了传热系数与湿度的关系。结果表明，蒸汽渗透可导致围护结构传热量增大很多倍，围护结构传热系数与保温材料平均湿度呈指数关系。
採用穩態熱箱實驗法，對採用巖棉作為保溫材料的金屬麵夾芯輕質絕熱圍護結構進行傳熱傳濕實驗，研究蒸汽滲透對其熱工性能的影響。通過對典型構造試件在穩定傳熱狀態下的溫度、濕度和熱流的測量和分析，得到瞭不同蒸汽滲透情況下保溫材料層的熱濕分佈，比較瞭5種工況下試件熱流的差彆，分析瞭傳熱繫數與濕度的關繫。結果錶明，蒸汽滲透可導緻圍護結構傳熱量增大很多倍，圍護結構傳熱繫數與保溫材料平均濕度呈指數關繫。
채용은태열상실험법，대채용암면작위보온재료적금속면협심경질절열위호결구진행전열전습실험，연구증기삼투대기열공성능적영향。통과대전형구조시건재은정전열상태하적온도、습도화열류적측량화분석，득도료불동증기삼투정황하보온재료층적열습분포，비교료5충공황하시건열류적차별，분석료전열계수여습도적관계。결과표명，증기삼투가도치위호결구전열량증대흔다배，위호결구전열계수여보온재료평균습도정지수관계。
Using the steady heat transfer testing method in the guarded hot box,conducts heat and humidity transfer experiments for the light metal insulating sandwich building envelope,which adopts rock wool as the thermal insulation material,and studies the effect of vapor penetration on the thermal performance.Measures the temperature,humidity and heat flow rate for the typical light metal insulated constructions in steady heat transfer condition,and obtains the temperature and humidity distribution in rock wool of the specimen with different vapor penetration cases.Compares the difference of the heat flow rate of the specimen in five cases,and analyses the correlation between the heat transfer coefficient and humidity.The results show that the heat flow rate through the specimen with vapor penetration increases by many times than that without vapor penetration,and there is an exponential relationship between the heat transfer coefficient of building envelope and the average humidity of thermal insulation material.
