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Article

Comparative Analysis of Energy Consumption, Indoor Thermal–Hygrometric Conditions, and Air Quality for HVAC, LDAC, and RDAC Systems Used in Operating Rooms

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Administration Center, Chang Gung Medical Foundation, Taoyuan 333008, Taiwan
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Department of Engineering Management, Chang Gung Memorial Hospital, Taoyuan 333008, Taiwan
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Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan 333323, Taiwan
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Department of Respiratory Therapy, College of Medicine, Chang Gung University, Taoyuan 333323, Taiwan
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Department of Respiratory Care, Chang Gung University of Science and Technology, Chiayi 613016, Taiwan
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Department of Obstetrics and Gynaecology, Taipei Chang Gung Memorial Hospital, Taipei 105406, Taiwan
*
Author to whom correspondence should be addressed.
Appl. Sci. 2020, 10(11), 3721; https://doi.org/10.3390/app10113721
Received: 1 May 2020 / Revised: 23 May 2020 / Accepted: 24 May 2020 / Published: 27 May 2020
As controlling temperature and humidity is crucial for maintaining comfort and preventing microbial growth, operating rooms (ORs) are the most energy-intensive areas in hospitals. We aimed to evaluate the energy consumption of three dehumidification air conditioning systems used in ORs and their corresponding air quality for ORs at rest. This study selected three ORs using a conventional heating, ventilation, and air conditioning (HVAC) system; a liquid desiccant air conditioning (LDAC) system; and a rotary desiccant air conditioning (RDAC) system, respectively. The indoor thermal–hygrometric conditions, air quality, and energy consumption of the ORs were monitored in this study. The median levels of relative humidity (RH) were 66.7% in the OR using the conventional HVAC system, 60.8% in the OR using the LDAC system, and 60.5% in the OR using the RDAC system. The median daily total energy consumption of the RDAC system (10.1 kWh/m2) and LDAC system (11.8 kWh/m2) were 28.12% and 16.54% lower, respectively, than that of the conventional HVAC system (14.1 kWh/m2). The PM≥0.5 levels and airborne bacterial concentrations in the ORs met the ISO 14644-1 Class 7 standard and China’s GB50333-2013 standard, respectively. The RDAC system was clearly superior to the LDAC and conventional HVAC systems in terms of energy consumption. View Full-Text
Keywords: dehumidification air conditioning system; humidity; energy consumption; air quality; operating room; ventilation dehumidification air conditioning system; humidity; energy consumption; air quality; operating room; ventilation
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MDPI and ACS Style

Chien, T.-Y.; Liang, C.-C.; Wu, F.-J.; Chen, C.-T.; Pan, T.-H.; Wan, G.-H. Comparative Analysis of Energy Consumption, Indoor Thermal–Hygrometric Conditions, and Air Quality for HVAC, LDAC, and RDAC Systems Used in Operating Rooms. Appl. Sci. 2020, 10, 3721. https://doi.org/10.3390/app10113721

AMA Style

Chien T-Y, Liang C-C, Wu F-J, Chen C-T, Pan T-H, Wan G-H. Comparative Analysis of Energy Consumption, Indoor Thermal–Hygrometric Conditions, and Air Quality for HVAC, LDAC, and RDAC Systems Used in Operating Rooms. Applied Sciences. 2020; 10(11):3721. https://doi.org/10.3390/app10113721

Chicago/Turabian Style

Chien, Tsung-Yi, Ching-Chieh Liang, Feng-Jen Wu, Chi-Tsung Chen, Ting-Hsin Pan, and Gwo-Hwa Wan. 2020. "Comparative Analysis of Energy Consumption, Indoor Thermal–Hygrometric Conditions, and Air Quality for HVAC, LDAC, and RDAC Systems Used in Operating Rooms" Applied Sciences 10, no. 11: 3721. https://doi.org/10.3390/app10113721

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