Yang Ja-Kang, Lee Hyun-Je, Park Sun-Hyo, Chae Young-Tae, Choi Jong-Su, Park Doo-Yong
Korea Research Institute of Mechanical Facilities Industry, South Korea.
Research Institute, WooWon M&E Inc, South Korea.
Heliyon. 2023 Mar;9(3):e13927. doi: 10.1016/j.heliyon.2023.e13927. Epub 2023 Feb 21.
Recently, the importance of mechanical facilities in charge of the safety and comfort of occupants in buildings has once again been highlighted in accordance with global social issues such as the spread of COVID-19. In response, various ventilation systems are being developed to improve indoor air quality, and efforts are being made to satisfy the indoor comfort of the occupants. Such advanced facilities allow occupants to secure indoor air quality, while frequent ventilation systems can affect the cooling and heating load in the building, and there is also a problem that it can occupy a relatively large amount of space in the building. This study proposes an integrated, outdoor fan-ventilated cooling device and analyzes its performance and economic efficiency. The EnergyPlus simulation program was used to model two types of systems for comparison: an existing (base) model with a condenser located in the outdoor unit, and a developed model with the condenser integrated within the cooling system. The state of the air passing through the condenser was analyzed prior to comparing the efficiency of the integrated, outdoor fan-ventilated cooling device, followed by an in-depth analysis of the performance and economic efficiency based on total energy consumption. In Case 1, the air passing through the cooling system was approximately 5 lower than the base model and showed 11% peak load reduction in comparison to the maximum energy consumption. Additionally, a comparison between regions with different outdoor air temperatures showed an average cost reduction of 16% in Daejeon and Busan City.
最近，随着新冠疫情传播等全球社会问题的出现，负责建筑物内居住者安全与舒适的机械设施的重要性再次得到凸显。对此，人们正在开发各种通风系统以改善室内空气质量，并努力满足居住者的室内舒适度。这类先进设施能让居住者确保室内空气质量，然而频繁的通风系统会影响建筑物的制冷和制热负荷，而且还存在在建筑物内会占据相对较大空间的问题。本研究提出了一种集成式室外风扇通风冷却装置，并分析了其性能和经济效益。使用EnergyPlus模拟程序对两种系统进行建模以作比较：一种是室外机中设有冷凝器的现有（基础）模型，另一种是冷凝器集成在冷却系统内的改进模型。在比较集成式室外风扇通风冷却装置的效率之前，先分析了流经冷凝器的空气状态，随后基于总能耗对性能和经济效益进行了深入分析。在案例1中，流经冷却系统的空气比基础模型低约5 ，与最大能耗相比峰值负荷降低了11%。此外，不同室外气温区域之间的比较显示，大田市和釜山市的平均成本降低了16%。
