An overview of solutions for airborne viral transmission reduction related to HVAC systems including liquid desiccant air-scrubbing.
An overview of solutions for airborne viral transmission reduction related to HVAC systems including liquid desiccant air-scrubbing.
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DOI：
10.1016/j.energy.2021.122709
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发表时间：
2022-04-01
期刊：
影响因子：
--
通讯作者：
Smallbone AJ
中科院分区：
文献类型：
--
作者：
Giampieri A;Ma Z;Ling-Chin J;Roskilly AP;Smallbone AJ
冠状病毒 SARS-CoV-2 的传播影响着全世界人民的健康和经济。由于空气传播病毒，建筑物、封闭空间和公共交通中的供暖、通风和空调 (HVAC) 系统在限制空气传播病原体的传播方面发挥着重要作用，但代价是增加能源消耗并可能降低热舒适度。另一方面，液体干燥剂技术可用作空气洗涤器，提高室内空气质量，并通过温度和湿度控制来灭活病原体，使其不利于微生物的生长、繁殖和传染。本研究的目的是回顾暖通空调在空气传播病毒中的作用，估计与采用暖通空调减少传播相关的能源损失，并了解液体干燥剂技术的潜力。还描述了影响液体干燥剂溶液灭活病原体的因素，以及为增加其传热传质和消毒特性而可能进行的修改，然后进行了经济评估。结论是，液体干燥剂技术可能有益于建筑物（需要湿度控制或除湿，特别是当病毒可能出现时）或高人流量的封闭空间（在病毒爆发期间）。
The spread of the coronavirus SARS-CoV-2 affects the health of people and the economy worldwide. As air transmits the virus, heating, ventilation and air-conditioning (HVAC) systems in buildings, enclosed spaces and public transport play a significant role in limiting the transmission of airborne pathogens at the expenses of increased energy consumption and possibly reduced thermal comfort. On the other hand, liquid desiccant technology could be adopted as an air scrubber to increase indoor air quality and inactivate pathogens through temperature and humidity control, making them less favourable to the growth, proliferation and infectivity of microorganisms. The objectives of this study are to review the role of HVAC in airborne viral transmission, estimate its energy penalty associated with the adoption of HVAC for transmission reduction and understand the potential of liquid desiccant technology. Factors affecting the inactivation of pathogens by liquid desiccant solutions and possible modifications to increase their heat and mass transfer and sanitising characteristics are also described, followed by an economic evaluation. It is concluded that the liquid desiccant technology could be beneficial in buildings (requiring humidity control or moisture removal in particular when viruses are likely to present) or in high-footfall enclosed spaces (during virus outbreaks).
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