Impact of building-integrated PCM on the indoor thermal environment and energy performance of an office zone.

This paper investigates different design options for the integration of active Phase Change Material (PCM) in an office zone. The charging and discharging of the PCM, arranged in layers, is managed by a controlled airflow passing through these layers. Two configurations are considered: (a) PCM in a wall in which a PCM layer is in contact with the room air and; (b) PCM within a duct heat exchanger in a ceiling plenum. Several control strategies are also evaluated. In comparison with a room without PCM, it was found that the annual heating energy use can be reduced by 29% for the first configuration, and 33% for the second. An enhanced control strategy may yield a 38% reduction with the Configuration B. Furthermore, the morning peak load could be reduced by 22% by improving the charging/discharging strategy of the PCM in the ceiling plenum.

本文针对办公区域内主动式相变材料（Phase Change Material，PCM）的集成设计方案展开研究。分层布置的相变材料的充放热过程，由流经该层的可控气流进行调控。本次研究共考虑两种配置方案：(a) 墙体内置相变材料：相变材料层与室内空气直接接触；(b) 吊顶静压箱内风道换热器内置相变材料。同时还对多种控制策略进行了评估。与未搭载相变材料的房间相比，第一种配置方案可将年度采暖能耗降低29%，第二种方案则可降低33%。针对第二种配置方案，采用优化后的控制策略可实现38%的能耗降幅。此外，通过优化吊顶静压箱内相变材料的充放热策略，可将晨间峰值负荷降低22%。