CAJ | 학술논문

以南京地区为例,研究与分析了相变通风蓄能砌体南外墙不同构造时,夜间通风风速变化对热响应的影响。结果表明,相变材料置于空心砌块内侧时优于外置,内置时墙体内表面温度波最大振幅仅为外置时的58.3%；构造A与构造B的最佳流速均为2m/s,且墙体内表面温度波最小振幅以及最大延迟系数分别为1.74℃、8h和3.72℃、7h,较之不通风,流入室内热量分别减少了38.2%和29.3%,当量热阻分别增大了115.8%和88.6%。
이남경지구위례,연구여분석료상변통풍축능체체남외장불동구조시,야간통풍풍속변화대열향응적영향。결과표명,상변재료치우공심체괴내측시우우외치,내치시장체내표면온도파최대진폭부위외치시적58.3%；구조A여구조B적최가류속균위2m/s,차장체내표면온도파최소진폭이급최대연지계수분별위1.74℃、8h화3.72℃、7h,교지불통풍,류입실내열량분별감소료38.2%화29.3%,당량열조분별증대료115.8%화88.6%。
Taking Nanjing area for example, the effects of variation of night ventilation velocity on thermal response of the south wall of storage block of phase-change-materials (PCMs) with type-A and type-B structures are investigated and analyzed. The results show that PCMs placing in hollow block perform better than that outside. Meanwhile, the maximum amplitude of surface temperature wave in the wall of the former is mere 58.3% of that outside. The optimal flow velocities of the two structures are all 2m/s, and the minimum amplitudes of surface temperature wave in the wall are respectively 1.74?C and 3.72?C as well as the retardation coefficients are 8h and 7h. Compared to badly ventilated, influx heats indoor reduce 38.2%and 29.3%while equivalent heat resistances increase 115.8%and 88.6%.