scholarly journals Microclimate in Rooms Equipped with Decentralized Façade Ventilation Device

Atmosphere ◽  
2020 ◽  
Vol 11 (8) ◽  
pp. 800
Author(s):  
Ewa Zender-Świercz
Keyword(s):  
Carbon Dioxide ◽  
Mechanical Ventilation ◽  
Indoor Air ◽  
Natural Ventilation ◽  
Sick Building Syndrome ◽  
Existing Buildings ◽  
Outdoor Air ◽  
Air Humidity ◽  
Thermal Isolation ◽  
Sick Building

Many building are characterized by insufficient air exchange, which may result in the symptoms of sick building syndrome (SBS). A large number of existing buildings are equipped with natural ventilation, whose work is disturbed by activities going to energy-saving. The thermomodernization activities are about mounting new sealed windows and laying thermal isolation, which reduces the amount of infiltrating/exfiltrating air. In many cases, the mechanical ventilation cannot be used due to a lack of a place in building or architectural and construction requirements. One of the solutions to improve the indoor microclimate is the decentralized façade ventilation. In the article, the internal air parameters in an office room equipped with decentralized façade ventilation device were analyzed. The room was equipped with a decentralized façade unit, which cyclically supplied and removed air from the room. The time of the supply/exhaust was changed to 2 min, 4 min, and 10 min. The temperature and the humidity of the indoor air and the outdoor air and the concentration of carbon dioxide inside the room were measured. The analysis showed that despite the lack of a heater in the device, the air temperature in the workplace and in the central point of the room was in the range of 20–22 °C. The air humidity was in the range of 27–43%.

scholarly journals Correlation amongst Indoor Air Quality, Ventilation and Carbon Dioxide

2017 ◽  
Vol 9 (2) ◽  
pp. 179-192 ◽  
Author(s):  
N. L. Sireesha
Keyword(s):  
Carbon Dioxide ◽  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Sick Building Syndrome ◽  
Well Being ◽  
Ventilation Rate ◽  
Indoor Contaminants ◽  
Sick Building ◽  
Carbon Dioxide Co2

The calculation of carbon dioxide (CO2)  intensities can be employed to see the quality of indoor air and ventilation. The studies undertaken till date have been distorted. The current study summaries the association amongst carbon dioxide and building air quality and ventilation, with carbon dioxide being the marker to evaluate air quality and ventilation performance. High carbon dioxide intensities may show insufficient ventilation per occupant and high indoor contaminants intensities, resulting in the Sick Building Syndrome (SBI) Symptoms. The researcher assessed the literature related to indoor air quality (IAQ), ventilation, and building-linked health issues in schools linked to CO2 discharges and recognised general indicated building-linked well-being signs found in schools. A high rise in the ventilation rate or enhancement in ventilation efficacy and/or indoor contaminant source regulation would be anticipated to reduce the occurrence of chosen signs to its optimum.

scholarly journals Development of a Ventilation System Using Window Cavity

2020 ◽  
Vol 12 (20) ◽  
pp. 8391
Author(s):  
Jinuk Lee ◽  
Sanghoon Park ◽  
Taeyeon Kim
Keyword(s):  
Carbon Dioxide ◽  
Particulate Matter ◽  
Indoor Air ◽  
Natural Ventilation ◽  
Ventilation System ◽  
Measurement Data ◽  
Outdoor Air ◽  
Forced Ventilation ◽  
Negative Impacts ◽  
Carbon Dioxide Co2

A household unit of an existing apartment in which residents lived was selected, and the indoor air quality in each space of the unit was measured for analysis. Analysis of the measurement data indicated that the concentration of carbon dioxide (CO2) constantly increased beyond 1000 ppm when a resident stayed indoors for an hour or more. Specifically, the concentration of CO2 increased when the resident was asleep to a level wherein negative impacts on health were observed. Moreover, the inflow of particulate matter (PM) was mainly caused by natural ventilation from the outside rather than the behavior of indoor residents, which generated an insignificant amount of PM. This study proposes a new ventilation system for solving the above-described problems. According to the system, when a window is closed, the window cavity created between a new frame and the existing frame is utilized as an air path for ventilation. The application of this system ensures a stable amount of ventilation through forced ventilation and prevents the inflow of external PM. Moreover, this system was designed to recover indoor heat through the window cavity and facilitate the pre-heating of outdoor air through heat collection based on solar radiation during the day.

The Possibility of Building Classification for Mould Threat Using Gas Sensors Array

2015 ◽  
Vol 1126 ◽  
pp. 161-168 ◽  
Author(s):  
Zbigniew Suchorab ◽  
Łukasz Guz ◽  
Grzegorz Łagód ◽  
Henryk Sobczuk
Keyword(s):  
Gas Sensors ◽  
Indoor Air ◽  
Natural Ventilation ◽  
Building Materials ◽  
Sick Building Syndrome ◽  
Principal Component ◽  
Oxide Semiconductor ◽  
Environmental Research ◽  
Sick Building ◽  
Sensors Array

Mould risk is an increasing problem in current housing branch. Mould is considered to be one of the most important features of Sick Building Syndrome. In most cases it is caused by the increased moisture of building barriers and improper humidity of indoor air. In old buildings it is caused by improper raising techniques, lack of isolation against moisture and insufficient building materials applied for construction. Modern housing also suffers problem of mould risk which is connected to introducing of the new materials and technologies for external envelopes of the buildings. These often increase the tightness of the buildings and cause improper performance of natural ventilation systems, which makes suitable conditions for mould to grow.In the paper there is proposed an attempt to evaluate mould risk in the buildings using e-nose, being a gas sensors array which consists of eight metal oxide semiconductor (MOS) gas sensors. This device is commonly applied for air quality assessment in environmental research. First part of the article is a description of e-nose technology and its possible applications in constructions. The second part shows the exemplary e-nose readouts of indoor air sampled in clean reference rooms and threatened with mould development. Obtained multivariate data are processed and visualized using a Principal Component Analysis (PCA).

scholarly journals A Review of Performance Specifications and Studies of Trickle Vents

Buildings ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 152 ◽  
Author(s):  
Ahmet Biler ◽  
Aslihan Unlu Tavil ◽  
Yuehong Su ◽  
Naghman Khan
Keyword(s):  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Natural Ventilation ◽  
Control Strategies ◽  
Sick Building Syndrome ◽  
Living Environment ◽  
Comprehensive Overview ◽  
Performance Specifications ◽  
Sick Building

The air quality of indoor spaces is the most significant parameter in providing a healthy living environment. Low indoor air quality (IAQ) leads to Sick Building Syndrome—one of the major reasons for labor loss in office buildings. The fundamental measure to ensure indoor air quality is ventilation, which includes two basic types: mechanical ventilation and natural ventilation. Natural ventilation is an exchange of stale indoor air with fresh outdoor air by means of a pressure difference due to wind and/or stack effect. Trickle Vents, known also as background ventilators, are natural ventilation devices which can be integrated into façades or window systems as an alternative to operable vents, specifically in high-rise buildings. The major design criteria of Trickle Vents are ventilation capacity, controllability, actuation, thermal insulation, air permeability, water tightness, climatic adaptation, security, and acoustic attenuation. Other important parameters in Trickle Vents design are positioning, equivalent area, and control strategy. This paper aims to review all these aspects, particularly with reference to building regulations and commercial products. Furthermore, simulation, experimental, monitoring, and survey studies of Trickle Vents are also discussed. This literature review is presented from the perspective of performance parameters, control strategies, positioning, etc., with an aim to provide a comprehensive overview of such technology.

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>

scholarly journals INDOOR AIR QUALITY ASSESSMENT FOR A MULTISTOREY UNIVERSITY OFFICE BUILDING IN MALAYSIA

2019 ◽  
Vol 14 (4) ◽  
pp. 93-109
Author(s):  
Abd Halid Abdullah ◽  
Yee Yong Lee ◽  
Eeydzah Aminudin ◽  
Yeong Huei Lee
Keyword(s):  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Work Performance ◽  
Sick Building Syndrome ◽  
Office Building ◽  
Physical Parameters ◽  
Contributing Factors ◽  
Air Quality Assessment ◽  
Sick Building

The indoor air quality (IAQ) in office buildings should be assessed for public health concerns as it relates to work performance and productivity. Therefore, this paper aims to assess the IAQ in a university office building. From this investigation, the level of contaminated indoor air is examined, the significant causes and contributing factors of contaminated indoor air are determined and a recommendation to improve the existing condition has been proposed. The physical parameters measured include air temperature, air velocity, relative humidity, and concentrations of carbon dioxide (CO2), carbon monoxide (CO), sulphur dioxide (SO2), and also air particles. It was found that the number of air particles of 0.5 μm in diameter is about 197,748 particles/m3, while air particles of 5.0 μm in diameter is around 534 particles/m3. The collected data were then compared with a questionnaire and IAQ standards. In conclusion, the indoor air quality within the multi-storey central office building of Universiti Tun Hussein Onn Malaysia (UTHM) is acceptable and suitable for occupation even though there were countable symptoms of Sick Building Syndrome (SBS) among its occupants.

scholarly journals The quality of the microclimate in educational buildings subjected to thermal modernization

2019 ◽  
Vol 100 ◽  
pp. 00048
Author(s):  
Anna Lis ◽  
Nadiia Spodyniuk
Keyword(s):  
Carbon Dioxide ◽  
Energy Consumption ◽  
Energy Intensity ◽  
Sick Building Syndrome ◽  
Total Energy Consumption ◽  
Educational Buildings ◽  
Before And After ◽  
Sick Building ◽  
Microclimate Conditions

Realization and exploitation of buildings involves in European Union about 40% of total energy consumption [1]. One of the elements of rationalization of energy consumption in buildings are the undertakings related with thermal modernization of buildings. The actions related with reducing the energy intensity of buildings are not always correlated with improvement of microclimate conditions in the rooms. Errors in the implementation of the energy efficiency program led to the phenomenon of sick building syndrome. The paper presents the results of the research conducted in a few educational buildings before and after thermal modernization. The research includes energy consumption for the heating of building and selected parameters of the interior microclimate. This analysis was carried out to evaluate the influence of energy saving activities on microclimate interior conditions. It was found that in many cases commonly used gravitational ventilation is not able to ensure the proper conditions of the interior microclimate, and the concentrations of carbon dioxide recorded in the tested rooms exceeded the applicable standards.

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