Inspection and Analysis for IAQ at the Waiting Room in Lingui Bus Station

2011 ◽  
Vol 250-253 ◽  
pp. 3079-3082
Author(s):  
Zhi Ping Zhou ◽  
Rong Wang ◽  
Chao Huang
Keyword(s):  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Waiting Room ◽  
Index Method ◽  
Synthetic Index ◽  
Indoor Pollutant ◽  
Standard Value ◽  
Bus Station ◽  
Standard Limit

Indoor air quality has an important impact on human health.In order to find out indoor air quality (IAQ) condition at the waiting room in Guilin Lingui bus station, in the survey, the waiting room IAQ had been investigated with the carry-home fast inspect instrument from Dec 20th to Dec 30th in Lingui Bus Station. The levels of CO2, formaldehyde(HCHO), particles with diameters of 10 um or less(PM10) and total volatile organic compound(TVOC) had been inspected mostly. Data were analyzed by the SPSS 11.0 and evaluated with synthetic index method of air quality. Results showed that CO2 concentration was biggest to 878 ppm(standard limit of 1000ppm), PM10 concentration was biggest to 0.14mg/m3(standard value of 0.15 mg/m3), HCHO concentration was biggest to 0.08 mg/m3(standard value of 0.10 mg/m3). The concentration of other pollutants were lower comparatively. The winter air quality of the waiting room in Lingui bus station belongs to the no pollution. It showed that the levels of indoor pollutant were higher than outdoors', too.

Comparative Study on Indoor Air Quality Evaluation Method

2012 ◽  
Vol 178-181 ◽  
pp. 267-271
Author(s):  
Xing Yang Leng ◽  
Ping Jiang
Keyword(s):  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Index Method ◽  
Comprehensive Evaluation Method ◽  
Comprehensive Index Method ◽  
Grey Relational

This paper reviewed six kinds of indoor air quality (IAQ) evaluation methods, by which the same IAQ status were evaluated. Besides, the relations and distinctions of six methods were also analyzed. The results indicate that the evaluation results of different methods on the same sample are not identical. Fuzzy comprehensive evaluation method, pollution loss rate method and comprehensive index method are relatively accurate, and improved grey relational analysis method has the largest error.

The Study on University Gymnasium Indoor Air Pollution Control

2012 ◽  
Vol 573-574 ◽  
pp. 288-292 ◽  
Author(s):  
Yong Qiao
Keyword(s):  
Air Pollution ◽  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Pollution Control ◽  
Indoor Air Pollution ◽  
Air Pollution Control ◽  
Air Conditioning System ◽  
Outdoor Concentration ◽  
Indoor Pollutant

People spend 80% of your time indoors. Because indoor pollutant concentration is generally higher than the corresponding outdoor concentration, indoor air quality (IAQ) is obviously an environment of the component, about the human health and comfortable sense. This paper introduced the main source of the classification and main air pollution indoor environmental impact stadium. We analyses the main influencing factors on indoor air conditioning system of indoor air quality. Paper proposes some measures to improve the indoor air quality indoor stadium.

scholarly journals Effect of Non-Coal Heating and Traditional Heating on Indoor Environment of Rural Houses in Tianjin

2018 ◽  
Vol 16 (1) ◽  
pp. 77 ◽  
Author(s):  
Liansheng Liu ◽  
Hua Yang ◽  
Runze Duan ◽  
Minghai Liu ◽  
Ruifang Zhang ◽  
...  
Keyword(s):  
Air Quality ◽  
Natural Gas ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Indoor Environment ◽  
Ventilation Rate ◽  
Pollutant Emission ◽  
Coal Fire ◽  
Indoor Pollutant ◽  
Total Volatile Organic Compounds

In order to understand the effect of the non-coal heating and the traditional coal-fired heating on the indoor environment of the rural houses, the humidity environment and indoor air quality in several households were investigated during the heating period in Beichen District and Wuqing District of Tianjin, China. The results showed that the indoor average temperature for the heating by the electricity and the natural gas was higher than that by the traditional coal fire. The indoor relative humidity for the heating by the electricity and the natural gas was lower than that by the traditional coal fire. The indoor air quality (IAQ) for the heating by the electricity and the natural gas was better than that by the traditional coal fire. For traditional coal-fire heating households, the indoor pollutant emission (CO emission) by using the clean coal was lower than that by using the raw coal. The indoor ventilation rate which was an important parameter for the indoor air quality was generally poor in winter. The total volatile organic compounds (TVOC) emission in the indoors of the coal-fired heating households was generally higher than that of the non-coaled heating households.

scholarly journals Bad Air Can Also Kill: Residential Indoor Air Quality and Pollutant Exposure Risk during the COVID-19 Crisis

2020 ◽  
Vol 17 (19) ◽  
pp. 7183 ◽  
Author(s):  
Samuel Domínguez-Amarillo ◽  
Jesica Fernández-Agüera ◽  
Sonia Cesteros-García ◽  
Roberto Alonso González-Lezcano
Keyword(s):  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Energy Savings ◽  
Indoor Pollutants ◽  
Indoor Pollutant ◽  
Domestic Environments ◽  
The City ◽  
Pm2.5 Concentration

During the first outbreak of the SARS-CoV-2 pandemic the population, focusing primarily on the risk of infection, was generally inattentive to the quality of indoor air. Spain, and the city of Madrid in particular, were among the world’s coronavirus hotspots. The country’s entire population was subject to a 24/7 lockdown for 45 days. This paper describes a comparative longitudinal survey of air quality in four types of housing in the city of Madrid before and during lockdown. The paper analysed indoor temperatures and variations in CO2, 2.5 μm particulate matter (PM2.5) and total volatile organic compound (TVOC) concentrations before and during lockdown. The mean daily outdoor PM2.5 concentration declined from 11.04 µg/m3 before to 7.10 µg/m3 during lockdown. Before lockdown the NO2 concentration values scored as ‘very good’ 46% of the time, compared to 90.9% during that period. Although the city’s outdoor air quality improved, during lockdown the population’s exposure to indoor pollutants was generally more acute and prolonged. Due primarily to concern over domestic energy savings, the lack of suitable ventilation and more intensive use of cleaning products and disinfectants during the covid-19 crisis, indoor pollutant levels were typically higher than compatible with healthy environments. Mean daily PM2.5 concentration rose by approximately 12% and mean TVOC concentration by 37% to 559%. The paper also puts forward a series of recommendations to improve indoor domestic environments in future pandemics and spells out urgent action to be taken around indoor air quality (IAQ) in the event of total or partial quarantining to protect residents from respiratory ailments and concomitantly enhanced susceptibility to SARS-CoV-2, as identified by international medical research.

IAQ ASSESSMENT IN UPNM MEDICAL CENTER

2015 ◽  
Vol 77 (32) ◽  
Author(s):  
Khairunnisa Ahmad ◽  
Chew Sue Ping
Keyword(s):  
Air Quality ◽  
Relative Humidity ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Medical Center ◽  
Environmental Data ◽  
Medical Centre ◽  
Waiting Room ◽  
Real Time System ◽  
Number Of Patients

The number of cases involving human death has increased due to scattered virus in the air. This has become a major concern on air quality, especially indoor air quality. The chemical compounds found in the building have limited exchange of outdoor and indoor, which results in building of contaminants such as CO2 emitted by occupants activity in the building. The usage of air conditioner is unable to removes pathogens because its only circulates in air within the area. Medical Centre has a very high potential to centralize the patient with diseases related to health problems such as asthma, respiratory and cardiovascular related-diseases. This study is conducted at medical centre of NDUM, in Kuala Lumpur. The number of patients admitted was compared to the level of CO2, temperature and relative humidity in the Medical Centre. The outdoor air index is collected from DOE Malaysia. Wireless Sensor Network (WSN) is used in this system as it can collect and disseminate the environmental data. Zigbee with 2.4GHz band is used as the wireless standard for the measurement. Sensors were attached to several points at the wall of the waiting room and were controlled by the PC module. Lab View is used to manage the data acquisition due to its ability to program a real-time system. The collected data of temperature, relative humidity and level of C02 determined the indoor air quality in the medical centre. This study brought to the assessment on the medical practice and the air quality that met the standard suggested by ASHRAE.

Indoor Air Quality of an Educational Building and its Effects on Occupants’ Comfort and Performance

2017 ◽  
Author(s):  
Ahmed Khalfan Al-Rawahi ◽  
Ali Al-Alili
Keyword(s):  
Air Quality ◽  
Thermal Comfort ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Indoor Air Pollution ◽  
Good Condition ◽  
Personal Time ◽  
Indoor Pollutant ◽  
High Concentrations ◽  
And Performance

Indoor Air Quality (IAQ) studies the air quality inside different types of environments and relates it to the health and comfort of occupants. Understanding and controlling common pollutants indoors can help in decreasing effects and the risks associated with these pollutants. Unhealthy indoor environment could lead to serious problems in people health and productivity. According to ASHRAE, 80–90% of personal time is spent indoors. As a result, indoor air pollution has gained a lot of interest and the number of studies on occupant health inside buildings grew very significantly in the last decades. The purpose of this study is to investigate the effect of indoor air quality inside an educational buildings on occupants’ comfort and performance. Various indoor pollutant such as, Carbon dioxide, Carbon monoxide, Volatile organic compounds, Particulates, and formaldehyde, are measured. The indoor air contaminants will be detected using IAQ measurement devices. The value of the pollutants is compared to maximum allowed values in ASHRAE standard 62.1. In addition, the occupant thermal comfort is reported using two indices which are Predicted Mean Vote (PMV) and Predicted Percentage of Dissatisfied (PPD). The relationship between the performance and the indoor air quality is also discussed. The results will discover the sources of the indoor air pollutants and accordingly suggestions will be given toward improving the indoor air quality. The final results showed that the IAQ is generally in a good condition for the majority of classrooms except for the TVOC which was always at high concentrations. Also, for some classrooms, the CO2 level and the relative humidity were exceeding the maximum limit. Regarding the thermal comfort, all the classrooms do not comply with ASHRAE Standard 55-2013. Therefore, they are not thermally comfortable.

Application of Sorptive Building Materials Reducing Indoor Air Pollution for Improving Indoor Air Quality

2015 ◽  
Vol 749 ◽  
pp. 358-361
Author(s):  
Jang Hoo Seo ◽  
Seong Hyun Park ◽  
Sun Woo Lee
Keyword(s):  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Building Materials ◽  
Indoor Air Pollution ◽  
Air Pollutant ◽  
Cfd Simulations ◽  
Air Exchange Rate ◽  
Indoor Pollutant ◽  
Computational Fluid Dynamics Cfd

In order to improve indoor air quality, the interest in and the use of sorptive building materials that decrease the concentration of an indoor air pollutant have increased. The use of sorptive building materials is one way to decrease the concentration of an indoor pollutant that can adversely affect human health. In this study, we evaluated the effects of sorptive building materials applied to a wall on the decrease in the concentration of toluene emitted from the flooring. We also examined how the air exchange rate of the room, the loading factor of the sorptive materials, and the mass transfer coefficient influenced the sorptive performance; these effects were well reproduced experimentally with computational fluid dynamics (CFD) simulations. The results show that sorptive building materials have a fairly strong effect on the decrease in toluene concentrations in rooms and that this effect can be expected in real-world scenarios.

Improving occupational health by modelling indoor pollutant distribution

Facilities ◽  
2016 ◽  
Vol 34 (5/6) ◽  
pp. 289-301 ◽  
Author(s):  
Rui Pitarma ◽  
Miguel Lourenço ◽  
João Ramos
Keyword(s):  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Design Procedure ◽  
Distribution Patterns ◽  
Indoor Environments ◽  
Content Type ◽  
Indoor Pollutant ◽  
Pollutant Source ◽  
Pollutant Distribution

Purpose Indoor environments are characterized by several pollutant sources. Some of these can be sufficiently characterized through the prediction of the airflow and pollutant distribution patterns. The purpose of this study was to simulate, analyze and compare different locations of known pollutant source inside a ventilated room. Design/methodology/approach Computational fluid dynamics modelling approach was used to analyze the prediction of the airflow and pollutant distribution patterns for different locations of known pollutant source inside a ventilated room by mixing ventilation. Findings Distinct areas of poor air quality, perfectly identified by concentration fields, were given. The indoor air quality obtained by the different simulated conditions was analyzed and compared. Research limitations/implications Pollutant concentration was not measured in the validation experiments (qualitative validation based on the velocity fields). Practical implications Once the contaminant concentration fields are calculated based on the source location, the model is very useful to choose the best place to install any pollutant indoor equipment to preserve breathing zones. Originality/value Providing an effective indoor air quality assessment to prevent exposure risk. The results would be useful for making decisions to optimize the design procedure, such as establish the best location to install polluting equipment, occupied areas and their interdependence with ventilation systems. In addition, this tool also helps to choose the best location and correct set point adjustment for the pollutant sensors.

scholarly journals Indoor Air Quality including Respiratory Viruses

Toxics ◽  
2021 ◽  
Vol 9 (11) ◽  
pp. 274
Author(s):  
Antonio López ◽  
Esther Fuentes ◽  
Vicent Yusà ◽  
F. Xavier López-Labrador ◽  
Marisa Camaró ◽  
...  
Keyword(s):  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Methodological Approach ◽  
Respiratory Viruses ◽  
Indoor Environments ◽  
Waiting Room ◽  
Consultation Room ◽  
Carbon Dioxide Co2 ◽  
Airborne Viruses

The detection of SARS-CoV-2 in indoor environments is a cause of increasing concern. In this study, three sampling methodologies have been used in order to collect SARS-CoV-2 and 17 other respiratory viruses in indoor air, combined with a new analytical process to analyze respiratory viruses. Different areas of an ophthalmological hospital were investigated for the presence of these airborne viruses. Moreover, indoor air quality (IAQ) parameters (carbon dioxide, CO2; carbon monoxide, CO; nitrogen dioxide, NO2; volatile organic compounds, VOCs; formaldehyde, HCHO; and particulate matter, PM) have been examined to study the relationship between IAQ and airborne viruses. All indoor air and surface samples assessed were found to be negative for SARS-CoV-2. Nevertheless, another airborne respiratory virus (HRV/ENV) was detected, illustrating that the methodology set out here is a suitable one. Regarding the results for the IAQ, chemical parameters studied in the hall and waiting room of the hospital presented acceptable values. However, in the doctor′s consultation room VOCs and HCHO show some instantaneous levels higher than the recommended guide values. The methodological approach described in this paper, integrating conventional IAQ and the assessment of bioaerosols, can be used in research and control programs aimed at promoting a healthy indoor environment.

scholarly journals Pengaruh Ventilasi Alami Terhadap Sick Building Syndrome

Arsitektura ◽  
2019 ◽  
Vol 17 (2) ◽  
pp. 211
Author(s):  
Fisa Savanti ◽  
Gagoek Hardiman ◽  
Erni Setyowati
Keyword(s):  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Natural Ventilation ◽  
Sick Building Syndrome ◽  
Air Conditioner ◽  
Waiting Room ◽  
Air Change Rate ◽  
Sick Building ◽  
Quantitative Descriptive

<p><em>The number of buildings that use air conditioner (AC), causing a lack of air change rate from the outside into the room or vice versa that can reduce indoor air quality. A bad indoor air quality is often give rise to complaints on its occupants called the "Sick Building Syndrome" (SBS). The presence of ventilation is expected to improve air quality and increase user comfort and wellness rooms. Therefore, the research on the influence of natural ventilation against sick building syndrome (SBS) is needed. This research was conducted with quantitative-descriptive methods with direct measurements of temperature, humidity and vloumetric air flow rate on samples of objects namely RSND clinic waiting room on the 2nd floor. As for analysis is carried out descriptively based on recommended standards. The purpose of doing this research is to know the influence of natural ventilation to the indoor air quality towards sick buiding syndrome. The result of this research show that the temperature, humidity and the clean air needs of the room doesn’t meet the standarts, meanwhile the air change per hour meet the standarts on some spots. So, there is some influence of the use of natural ventilation that can improve the indoor air quality which is relating to sick building syndrome.</em></p>

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