新型三层玻璃单元与PCM墙体结合的性能研究.pptxVIP

新型三层玻璃单元与PCM墙体结合的性能研究;1、摘要 2、引言 3、材料和方法 3.1 实验室 3.2 测量 3.3 计算 4、结果与讨论 5、结论; A PCM wall includes phase change material (PCM) as a heat storage medium. In the current project, the south fa?ade of a test room was constructed using PCM walls that were made of (from inside to outside) insulation, brick, plaster (including PCMs), an air gap and a novel triple glazing unit (TGU). Although the annual behaviour of the PCM walls were investigated in the project, the current paper covers an evaluation of the performance of PCM walls in the summer only. The solar transmittance of the TGU decreased approximately 100% during summer compared to winter. There were no overheating problems observed for the PCM wall during the summer.;1、摘要 一个PCM墙体包括相变材料（PCM）作为为储热介质。在当前的项目中，测试房间的南立面是PCM墙体，它从内到外是由保温砖、石膏（包括相变材料）、空气间隙和新型的三层玻璃单元（TGU））构成。虽然对项目中的PCM墙体的性能进行了全年的调查，但是本文只包含了对PCM墙体在夏季性能的评价。相比于冬季，夏季时TGC的太阳光透射率下降了大约100%。目前还没有监测到PCM墙体在夏季时有过热问题。;实验室的结构图;2、Introduction Solar energy can be directly stored in a building structure by incorporating phase change materials (PCMs) into standard building materials, such as concrete, gypsum board, and plaster. Latent heat storage (LHS) in PCMs has been studied for potential heating and cooling applications for buildings since 1980. LHS in PCMs is an attractive method for thermal energy storage because PCMs have a high-energy storage density over a relatively small temperature range.;2、引言 通过将相变材料结合到标准建材如混凝土，石膏板，抹灰中，可以将太阳能直接储存在建筑结构中。自1980年以来，关于相变材料的潜热储存（LHS）方面在建筑物中的潜在加热和冷却应用的研究一直在持续着。相变材料的潜热储存是一种吸引人的热量储存方法，因为相变材料在相对小的温度范围内有高能量的储存密度。 ;Recent comprehensive literature reviews covering all of the aspects of LHS in building structure can be found in [1e4]. The following conclusions have been reached from studies in the current literature. PCM has usually been placed in a plastic container. The outer face of a PCM wall has generally been covered with an ordinary single or double glazing unit that leads to an overheating problem in