Improving Indoor Air Quality through the Use of Ultraviolet Technology in Commercial Buildings

Robles, Daniel de; Kramer, Scott

doi:10.1016/j.proeng.2017.08.021

Cited by 32 publications

(23 citation statements)

References 2 publications

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“…In a study, stated that the air flow in the room was influenced by the difference in temperature and air pressure because the air would flow from a place with a higher temperature and pressure to a lower temperature through ventilation holes and windows (26). Lack of indoor air exchange will lead to accumulation of indoor air contaminants which can cause health effects, such as building related illness (BRI) and sick building syndrome (SBS) (27). SBS is a result of trapped air pollutants and higher humidity levels indoors (28).…”

Section: Discussionmentioning

confidence: 99%

Environmental Management Strategy to Control Air Germs in Tjitrowardojo District Hospital

Praptiwi

Rahardjo

Sunarto

2021

JKL

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Introduction: The presence of air germs in the hospital patient rooms is potentially to cause health problems for patients. This study aimed to identify andanalyze environmental factors associated with air germs, and formulate environmental management strategi to control air germs in the patient rooms. Methods: This study was an observational analytic survey, used a mixed method and a cross sectional design. Data collection was conducted through laboratory tests and interviews. Data was analysed by pearson correllation test to analyze environmental factors associated with air germs. The appropriate environmental management strategies was determined through SWOT analysis (Strength, Weakness, Opportunities, Threats). Results and Discussion: Several factors related to air germs were temperature (p = 0.032), lighting (p = 0.01) and the staff knowledge (p = 0.001). Humidity was not significantly related to air germs (p = 0.178), The results of SWOT analysis indicated that aggressive strategies (Strengths and Opportunities) were arranging internal hospital policies regarding to air quality management based on the Ministry of Health, utilizing educational qualifications and knowledge of room staff to support policy implementation, improving the performance of outsourcing personnel in cleaning services and maintaining hospitals infrastructure, increasing Inhouse Training activities. Conclusion: Environmental factors play an important role in the presence of air germs in the patient rooms so appropriate environmental management strategies are needed to control the presence of air germs.

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Section: Discussionmentioning

confidence: 99%

Environmental Management Strategy to Control Air Germs in Tjitrowardojo District Hospital

Praptiwi

Rahardjo

Sunarto

2021

JKL

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“…Some research proposes solutions to obtain clean fresh air. One of these proposed solutions is to install an ultraviolet unit at the entrance to the HVAC systems which enables indoor air quality (IAQ) by killing various airborne pollutants [ [119] , [120] , [121] , [122] , [123] , [124] , [125] , [126] ]. Various research studies have been carried out experimentally and theoretically on the effect of using UV irradiance in the HVAC system.…”

Section: Indoor Air Quality (Iaq)mentioning

confidence: 99%

Indoor Air Quality Strategies for Air-Conditioning and Ventilation Systems with the Spread of the Global Coronavirus (COVID-19) Epidemic: Improvements and Recommendations

Elsaid

Ahmed

2021

Environmental Research

120

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The coronavirus has come to the world and spread with great wide among the countries of the world and has resulted in numerous infections that exceeded 110,518,566 million patients and are close to 2.5 deaths by September 2020. It also brought with it panic and fear, halted many activities, and led to the decline of the global economy. It changed human behavior and forced people to change their lifestyles to avoid infection. One of the most sectors that must be taken into consideration through pandemic coronavirus (COVID-19) around the globe is the air conditioning systems. The HVAC systems depend on the air as a heat transfer medium. The air contains a group of pollutants, viruses, and bacteria, and it affects and destroys human life. The air filter plays a major role as an important component in the air conditioning systems. Thus, it requires more effort by researchers to improve its design to prevent the ultra-size of particles loaded with coronavirus (COVID-19). This paper provides insight into the design of existing combined air-conditioners on their suitability and their impact on the spread of the hybrid coronavirus epidemic and review efforts to obtain a highly efficient air filter to get rid of super-sized particles for protection against epidemic infection. In addition, important guideline recommendations have been made to limit the spread of the COVID-19 virus and to obtain indoor air quality in air-conditioned places.

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“…70–72 Germicidal ultraviolet (UV)-C lamps may be installed both in the incoming air portion and the outgoing air portion of the HVAC system. 73-75 Some advisories list working in a well-ventilated area as an option wherein natural ventilation is harnessed, provided this can be unidirectional, with no buffeting that might create turbulence, and provided the location of the contaminated-air exhaust poses no risk. 65, 67 As regards dental operatory, an ideal HVAC installation should allow for fresh filtered air to enter either from the side of the operator (the right side of the dental chair) towards the spittoon and out (the left side of the dental chair), as shown in Figure 1, or from the foot end of the patient at a lower level, finally exiting toward the head end by way of ceiling exhausts, especially if the HVAC option is to provide air that is cool, as in hotter climates.…”

Section: Engineering Controlsmentioning

confidence: 99%

An Emphasis on Engineering Controls and Administrative Controls in the Prevention and Control of COVID-19 in an Orthodontic Setting: Thinking Beyond Tomorrow

Prakash

Digumarthi

2021

J Indian Orthod Soc

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Introduction: Most of the initial focus in handling COVID-19 had been based on avoiding exposure by refraining from rendering most treatments other than those considered an emergency or urgent. Post-lockdown, with the resumption of most activities, there has been concern over the possibility of transmission scenarios if sufficient care is not taken. The control and prevention of the spread of infections when elimination of exposure is not possible is chiefly achieved through the judicious use of engineering controls and administrative controls in a clinical setting in addition to the standard protocols and transmission-based protocols. True safety lies in being one step ahead. There have been mentions of the possibility that COVID-19 could be opportunistic airborne in its spread, in addition to being spread via saliva, droplets, and contaminated surfaces or objects. Method: A literature search of PubMed, Google Scholar, Cochrane Library, and advisories released by such organizations as the World Health Organization (WHO), Centers for Disease Control and Prevention (CDC), Ministry of Health and Family Welfare (MOFHW), European Centre for Disease Prevention and Control (ECDC), Chinese Center for Disease Control and Prevention (China CDC), American Dental Association (ADA), Canadian Dental Association (CDA), French National Dentists Association, Dental Council of Belgium, National Health Service, England (NHS UK), National Health Service Scotland (NHS Scotland), and International Society for Infectious Diseases (ISID) was performed, with search parameters aimed at gathering information pertaining to infection control and cross infection control in dental settings as related to orthodontics. Result: There have been numerous articles and advisories published over the last 20 years, but the main focus has been on safe practices and to an extent on personal protective equipment, with relatively less emphasis on the need for respiratory protection by way of engineering controls and administrative controls. This review highlights the engineering and administrative controls that can be put into effect to make infection control and prevention much more effective. Conclusion: Any health care facility must be able to prevent, contain, and control infections with no risk of nosocomial infections. For this, an assumption has to be made that every individual in a health care setting is either at risk or a risk, depending on whether the person is infected or not. Meticulous attention to stringent policies of hygiene and infection control and prevention, coupled with suitable supporting engineering and administrative controls, is to be made a standard way of life in such facilities.

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Improving Indoor Air Quality through the Use of Ultraviolet Technology in Commercial Buildings

Cited by 32 publications

References 2 publications

Environmental Management Strategy to Control Air Germs in Tjitrowardojo District Hospital

Environmental Management Strategy to Control Air Germs in Tjitrowardojo District Hospital

Indoor Air Quality Strategies for Air-Conditioning and Ventilation Systems with the Spread of the Global Coronavirus (COVID-19) Epidemic: Improvements and Recommendations

An Emphasis on Engineering Controls and Administrative Controls in the Prevention and Control of COVID-19 in an Orthodontic Setting: Thinking Beyond Tomorrow

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