Sukarno Ragil, Putra Nandy, Hakim Imansyah Ibnu, Rachman Fadhil Fuad, Indra Mahlia Teuku Meurah
Applied Heat Transfer Research Group, Department of Mechanical Engineering, Universitas Indonesia, Kampus UI, Depok, 16424, Indonesia.
School of Information, Systems and Modelling, Faculty of Engineering and Information Technology, University of Technology Sydney, NSW, 2007, Australia.
J Build Eng. 2021 Mar;35:102116. doi: 10.1016/j.jobe.2020.102116. Epub 2020 Dec 26.
The COVID-19 pandemic in early 2020 became a global issue and received substantial attention worldwide. In a hospital, airborne infection isolation (AII) room is significant to prevent the spread of the virus to patients and medical personnel. This research aims to improve the design of the HVAC system of AII room used for removing contaminated air by making physical changes through the addition of heat pipe heat exchanger (HPHE). Experiments were conducted with varying fresh air inlet temperature between 30 and 45 °C and velocity between 1.5 and 2.5 m/s with three configurations of HPHE to investigate the performance of the HVAC system in the AII room. To ensure the HVAC system with HPHE meets the AII room requirements, this study carried out a smoke test as well as pressure and hourly air volume measurement tests between the exhaust and supply air sides. The results showed that the design of ventilation coupled with HPHE could meet the standards for the AII room. The HPHE succeeded in reducing energy consumption through pre-cooling of fresh air before entering the cooling coil device, with the highest temperature difference of 9.4 °C. The highest energy recovery was 767 W at 0.080 m/s air volume, which can handle 46% of the total HVAC system load at operating conditions and enhance the combined efficiency of the HVAC system. Based on the results, it can be concluded that the HPHE can be coupled in the HVAC system of the hospital AII room that is safe from cross-contamination which significantly reduces the energy consumption.
2020年初的新冠疫情成为一个全球性问题，受到了全世界的广泛关注。在医院中，空气传播感染隔离（AII）病房对于防止病毒传播给患者和医护人员至关重要。本研究旨在通过添加热管换热器（HPHE）进行物理改造，以改进用于去除污染空气的AII病房暖通空调（HVAC）系统的设计。实验在30至45°C的不同新风入口温度和1.5至2.5 m/s的风速下进行，采用三种HPHE配置，以研究AII病房中HVAC系统的性能。为确保带有HPHE的HVAC系统符合AII病房的要求，本研究进行了烟雾测试以及排气侧和送风侧之间的压力和每小时风量测量测试。结果表明，结合HPHE的通风设计能够满足AII病房的标准。HPHE通过在新风进入冷却盘管装置之前进行预冷成功降低了能耗，最高温差为9.4°C。在风量为0.080 m/s时，最高能量回收为767 W，在运行条件下可处理HVAC系统总负荷的46%，并提高了HVAC系统的综合效率。基于这些结果，可以得出结论，HPHE可应用于医院AII病房的HVAC系统中，能有效防止交叉污染，显著降低能耗。
