Field studies on the energy consumption and thermal comfort of a nZEB using radiant ceiling panel and open-loop groundwater heat pump system in a cold region
Field studies on the energy consumption and thermal comfort of a nZEB using radiant ceiling panel and open-loop groundwater heat pump system in a cold region
复制标题
DOI：
10.1016/j.jobe.2023.105999
复制
发表时间：
2023-02
影响因子：
6.4
通讯作者：
Minzhi Ye;K. Nagano;Ahmed A. Serageldin;Hideki Sato
中科院分区：
文献类型：
--
作者：
Minzhi Ye;K. Nagano;Ahmed A. Serageldin;Hideki Sato
现场研究在寒冷地区的一座办公楼中进行，该办公楼配备了辐射天花板（RCP）和开环地下水热泵（GWHP）系统。首先，根据物理测量和调查问卷的结果评估目标办公室的室内热舒适度。结果表明，悬挂式RCP系统可以全年实现舒适的室内热条件。室内温度保持在22-26°C范围内，湿度在30-60%范围内，CO2浓度大多在1000 ppm以下。其次，同时测试能源性能，并对间歇和连续运行方式进行比较。在连续运行方式下，维持了稳定的室内环境，GWHP系统的COP提高了10%。结果表明，通过优化系统运行，有可能进一步降低能耗并保持高水平的热舒适度。最后，根据记录的测量结果计算出年能耗。结果表明，该建筑可以达到日本ZEB-ready的水平。采用组合系统后，一次能源消耗较参考值可降低约67%。
Field studies were conducted in an office building in a cold region equipped with a radiant ceiling panel (RCP) and open-loop groundwater heat pump (GWHP) system. First, the indoor thermal comfort in a target office was evaluated based on the results obtained from the physical measurements and survey questionnaire. The results showed that the suspendedRCPsystem could achieve comfortable indoor thermal conditions throughout the year. The indoor temperature was maintained within the range of 22–26 °C, the humidity was within 30–60%, and CO2concentration was mostly below 1000 ppm. Second, the energy performance was tested simultaneously, and intermittent and continuous operation methods were compared. Under the continuous operation method, a stable indoor environment was maintained, and theCOPof theGWHPsystem increased by 10%. The results showed the potential to further reduce energy consumption and maintain a high level of thermal comfort through the optimization of system operations. Finally, the annual energy consumption was calculated based on the recorded measurements. The results illustrate that this building can reach theZEB-ready level in Japan. The primary energy consumption can be decreased by approximately 67% compared to the reference by applying the combined system.