Field Study on Energy Consumption and Thermal Comfort of a Nzeb Using Radiant Ceiling Panel and Open-Loop Groundwater Heat Pump System in a Cold Region

作     者：Ye, Minzhi Nagano, Katsunori Serageldin, Ahmed Awwad Sato, Hideki 

作者机构：Graduate School of Engineering Hokkaido University Hokkaido Sapporo060-8628 Japan Division of Human Environmental Systems Faculty of Engineering Hokkaido University N13-W8 Kita Ku Sapporo060-8628 Japan Department of Mechanical Engineering Shoubra Faculty of Engineering Benha University Cairo11629 Egypt Sanken Setsubi Kogyo Co. Ltd. Japan 

出 版 物：《SSRN》 

年 卷 期：2022年

核心收录：

主　　题：Energy utilization 

摘      要：A field study was conducted in both summer and winter in an office building, which is equipped with a radiant ceiling panel ( RCP ) and an open-loop groundwater heat pump ( GWHP ) system. All energy systems in this building were controlled and monitored using a building energy management system. First, the annual energy consumption was analyzed and it was clear this building can meet the requirements of the ZEB-ready level in Japan. The energy consumption of the air-conditioning system accounted for 46 % of the total energy consumption, which was the largest contributor to the total energy consumption. Second, indoor thermal comfort was evaluated based on the results obtained from the physical measurements and survey questionnaire. The results showed that the free-suspended RCP system could achieve the required indoor thermal conditions for the entire year. In addition, intermittent and continuous operation methods were compared in terms of both thermal comfort and energy consumption. Under the continuous operation method, a stable indoor environment was maintained, and the COP of the GWHP system was increased by 10 %. The results showed the potential to further reduce energy consumption and maintain a high thermal comfort level through system operation optimization. © 2022, The Authors. All rights reserved.