Thermal Inactivation of Airborne SARS-CoV-2 by an Electric Fan Heater in Winter and Defining Conditions to Ensure That All the Air Passes through the Fan

IF 1.6 4区工程技术 Q3 ENGINEERING, MECHANICAL

Journal of Thermal Science and Engineering Applications Pub Date : 2023-10-27 DOI:10.1115/1.4063911

Murat Canpolat, Çagri Sakalar, Serhat Bozkurt, Ahmet Yilmaz Çoban, Deniz Karaçayli, Emre Toker

{"title":"Thermal Inactivation of Airborne SARS-CoV-2 by an Electric Fan Heater in Winter and Defining Conditions to Ensure That All the Air Passes through the Fan","authors":"Murat Canpolat, Çagri Sakalar, Serhat Bozkurt, Ahmet Yilmaz Çoban, Deniz Karaçayli, Emre Toker","doi":"10.1115/1.4063911","DOIUrl":null,"url":null,"abstract":"Abstract The way the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is spread, especially in closed environments, is airborne transmission. The study aims to assess the thermal inactivation of airborne SARS-CoV-2 in a 30 m3 test room as a function of outlet temperature, airflow rate, and operating time of an electric heater, then define a condition to ensure that all air in the room passes through the electric heater. Aerosolized SARS-CoV-2 was delivered to the test room at an ambient temperature of 20 C and 40% humidity. Two electric heaters with different power and airflow rates were operated respectively in the test room to compare their efficiencies in the inactivation of airborne SARS-CoV-2. The first and second electric heaters had power, airflow rates, and outlet temperatures of 1.5 kW, 44 m3/h, 220 °C, and 3 kW, 324 m3/h, and 150 °C, respectively. A fan drew the outside air into the heater. In the first experiment, a 1.5 kW electric heater was operated in the test room for 80 minutes. In the second experiment, a 3 kW electric heater was used in the test room for 75 minutes. Airborne SARS-CoV-2 in the test room was inactivated by 99.00% and 99.96% in the first and second experiments, respectively. A condition is defined to ensure that all the air in the room passes at least once through the electric heater fan.","PeriodicalId":17404,"journal":{"name":"Journal of Thermal Science and Engineering Applications","volume":"21 4","pages":"0"},"PeriodicalIF":1.6000,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Thermal Science and Engineering Applications","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1115/1.4063911","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}

引用次数: 0

Abstract

Abstract The way the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is spread, especially in closed environments, is airborne transmission. The study aims to assess the thermal inactivation of airborne SARS-CoV-2 in a 30 m3 test room as a function of outlet temperature, airflow rate, and operating time of an electric heater, then define a condition to ensure that all air in the room passes through the electric heater. Aerosolized SARS-CoV-2 was delivered to the test room at an ambient temperature of 20 C and 40% humidity. Two electric heaters with different power and airflow rates were operated respectively in the test room to compare their efficiencies in the inactivation of airborne SARS-CoV-2. The first and second electric heaters had power, airflow rates, and outlet temperatures of 1.5 kW, 44 m3/h, 220 °C, and 3 kW, 324 m3/h, and 150 °C, respectively. A fan drew the outside air into the heater. In the first experiment, a 1.5 kW electric heater was operated in the test room for 80 minutes. In the second experiment, a 3 kW electric heater was used in the test room for 75 minutes. Airborne SARS-CoV-2 in the test room was inactivated by 99.00% and 99.96% in the first and second experiments, respectively. A condition is defined to ensure that all the air in the room passes at least once through the electric heater fan.

查看原文本刊更多论文

电风扇加热器在冬季机载SARS-CoV-2的热灭活及确保所有空气通过风扇的条件

严重急性呼吸综合征冠状病毒2 (SARS-CoV-2)的传播方式主要是空气传播，特别是在封闭环境中传播。本研究旨在评估在一个30 m3的测试室内，空气中SARS-CoV-2的热失活与出口温度、流速和电加热器运行时间的关系，并确定一个条件，以确保房间内的所有空气都通过电加热器。雾化后的SARS-CoV-2在环境温度为20℃、湿度为40%的条件下被送到试验室。在试验室中分别运行两台不同功率和风量的电加热器，比较它们对空气中SARS-CoV-2的灭活效率。第一和第二电加热器的功率、气流速率和出口温度分别为1.5 kW、44 m3/h、220°C和3 kW、324 m3/h、150°C。风扇把外面的空气吸入加热器。在第一个实验中，一台1.5 kW的电加热器在试验室运行80分钟。在第二个实验中，在测试室内使用3kw电加热器75分钟。第一次和第二次实验中，试验室空气传播的SARS-CoV-2灭活率分别为99.00%和99.96%。设定条件，保证室内所有空气至少一次通过电加热风扇。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of Thermal Science and Engineering Applications THERMODYNAMICSENGINEERING, MECHANICAL -ENGINEERING, MECHANICAL

CiteScore

3.60

自引率

9.50%

发文量

120

期刊介绍： Applications in: Aerospace systems; Gas turbines; Biotechnology; Defense systems; Electronic and photonic equipment; Energy systems; Manufacturing; Refrigeration and air conditioning; Homeland security systems; Micro- and nanoscale devices; Petrochemical processing; Medical systems; Energy efficiency; Sustainability; Solar systems; Combustion systems