scholarly journals Noise Calculation Charts and Indoor Environmental Quality for Evaluating Industrial Indoor Environment and Health

2019 ◽  
Author(s):  
Himanshu Dehra
Keyword(s):  
Environmental Quality ◽  
Indoor Environment ◽  
Indoor Environmental Quality ◽  
Environment And Health

Indoor environmental quality assessment: Part 1: Choice of the indoor environmental quality sub-component models

2017 ◽  
Vol 41 (3) ◽  
pp. 264-289 ◽  
Author(s):  
Michał Piasecki ◽  
Krystyna Kostyrko ◽  
Sławomir Pykacz
Keyword(s):  
Environmental Quality ◽  
Indoor Air ◽  
Indoor Environment ◽  
Energy Performance ◽  
Indoor Environmental Quality ◽  
Quality Model ◽  
Metrological Analysis ◽  
Environmental Quality Assessment ◽  
Comfort Perception ◽  
Acoustic Comfort

Indoor environment quality is a relative measure of comfort perception by people exposed to the indoor conditions. It is expected that any assessment of energy performance should also include indoor comfort. This study is to review indoor environmental quality models (with respect to thermal and acoustic comfort, indoor air and lighting quality). A simplified indoor environmental quality model is also developed with consideration of EN 15251 draft ‘Guideline for using indoor environmental input parameters for the design and assessment of energy performance of buildings’. This article analyses what components should be modelled and in particular discusses the effect of different weighting schemes on the overall indoor environmental quality index. The analysis includes thermal comfort models, indoor air quality, acoustic comfort and daylight illumination versus lightning. The proposed indoor environmental quality component sub-models will give the most reliable results when the model indoor environment input data are correctly measured and disturbing influences of indoor environmental quality monitoring process are well defined and properly assessed. The final indoor environmental quality result is based on subjoining the uncertainty values achieved in panel analysis of percentage of persons dissatisfied with indoor environmental quality with corrected measurement uncertainty. All simulations for IEQindex sub-components and preliminary metrological analysis of the whole indoor environmental quality model were performed with the NIST program for Monte Carlo tests. The presented indoor environmental quality model proposal is developed to support engineers’ practice as the convenient tool for a practical assessment of building’s occupational satisfaction.

scholarly journals Indoor Environmental Quality in Latin American Buildings: A Systematic Literature Review

2020 ◽  
Vol 12 (2) ◽  
pp. 643 ◽  
Author(s):  
Claudia Valderrama-Ulloa ◽  
Lorena Silva-Castillo ◽  
Catalina Sandoval-Grandi ◽  
Carlos Robles-Calderon ◽  
Fabien Rouault
Keyword(s):  
Latin America ◽  
Literature Review ◽  
Latin American ◽  
Environmental Quality ◽  
Systematic Literature Review ◽  
Indoor Environment ◽  
Indoor Environmental Quality ◽  
Indoor Environments ◽  
Environment Quality ◽  
Indoor Environment Quality

The amount of time people spend inside buildings is significant. Indoor environment quality deficiencies in some of these buildings may affect the health of its users. Therefore, a systematic literature review has been conducted to assess the quality of indoor environments in existing buildings in Latin America. The objectives of this review are (1) identifying countries and building types whose indoor environment quality has been analyzed the most, (2) identifying most used evaluation strategies, (3) identifying comfort types and most evaluated variables, and (4) determining whether or not Latin American buildings are comfortable and what local factors contribute to that effect. From the 100 selected papers for this analysis, it was noted that Brazil and Argentina led the studies on residences and schools. It was also noted that hygrothermal comfort was the most analyzed comfort type, with temperature and humidity leading the number of studies. Finally, this review shows a lack of studies including buildings whose users are sensitive to indoor environmental quality, such as nurseries, senior homes, or health facilities. Additionally, there is a sustained discrepancy between objective measuring methods and user perception. Furthermore, a detailed analysis of 88 buildings shows that in Latin America, 67.5% of buildings are uncomfortable; thus, it is necessary to improve the designs and regulatory standards, to educate users, and to improve building monitoring management at the operational stage.

scholarly journals The Effect of External Blinds on Selected Parameters of the Indoor Environment of an office Building

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Pavol Ďurica ◽  
Peter Barňák
Keyword(s):  
Environmental Quality ◽  
Indoor Environment ◽  
Environmental Parameters ◽  
Summer Season ◽  
Office Building ◽  
Indoor Environmental Quality ◽  
Heating Season

Abstract This contribution focuses on the indoor environmental quality in summer due to overheating of the interior of a west-facing office, since buildings designed in passive standard do not have a problem in the winter heating season but have a problem with cooling in the summer season. Therefore, the article focuses on the effect of external blinds on the indoor environmental parameters.

scholarly journals The impact of interior construction on the indoor environmental quality

2020 ◽  
Vol 15 (2) ◽  
pp. 103-112
Author(s):  
Katarína Harčárová ◽  
Silvia Vilčeková
Keyword(s):  
Particulate Matter ◽  
Surface Treatment ◽  
Environmental Quality ◽  
Initial Phase ◽  
Indoor Environment ◽  
Indoor Environmental Quality ◽  
Final Phase ◽  
Operative Temperature ◽  
The Impact

AbstractThe presented paper deals with the evaluation of the indoor environmental quality (IEQ) in two apartment units in different phases of interior construction. The first apartment is in the initial phase of an unfurnished apartment and the second in the final phase of a fully furnished apartment. The results of IEQ monitoring indicate that in terms of thermal-humidity microclimate, the required legislative limits were met and the differences between the unfurnished and the fully furnished apartment were minimal. Only the operative temperature values were not in the legislative range. The average particulate matter (PM) concentrations of the two representative fractions (PM2.5 and PM10) were 21.10 μg/m3 and 564.72 μg/m3 for the unfurnished apartment and 4.67 μg/m3 and 68.15 μg/m3 for the furnished apartment. The legislative limit of 50 μg/m3 for PM10 was therefore significantly exceeded, especially in the case of an unfurnished apartment in the initial phase. The average TVOC concentration expressed in toluene equivalents was 1955 μg/m3 in a furnished apartment and 910 μg/m3 in an unfurnished apartment. Both of these values exceeded Mølhave’s recommended limit of 200 μg/m3. The presence of xylenes (51.19 μg/m3) and ethylbenzene (17.27 μg/m3) was detected in an unfurnished apartment. In addition to xylenes (171.63 μg/m3) and ethylbenzene (79.25 μg/m3), toluene (78.34 μg/m3) was also present in the furnished apartment. The concentrations of these compounds were below the legislative limits, except for ethylbenzene for which no legislative limits are set. The above results show that further surface treatment and furnishing of the apartment contribute to the increase of the VOC levels in the indoor environment. In the case of unfurnished apartment, workers are exposed not only to elevated concentrations of TVOC but also to elevated concentrations of PM10 and should therefore pay attention to the protection and safety of health during the work.

scholarly journals The impact of IEQ on occupants’ satisfaction in Malaysian buildings

2017 ◽  
Vol 27 (5) ◽  
pp. 715-725 ◽  
Author(s):  
Syahrul Nizam Kamaruzzaman ◽  
Charles O. Egbu ◽  
Norhayati Mahyuddin ◽  
Emma Marinie Ahmad Zawawi ◽  
Shirley Jin Lin Chua ◽  
...  
Keyword(s):  
Environmental Quality ◽  
Indoor Environment ◽  
Comfort Level ◽  
Indoor Environmental Quality ◽  
Aesthetic Perception ◽  
Study Approach ◽  
Post Occupancy Evaluation ◽  
The Impact ◽  
Occupant Satisfaction

This paper focuses on the importance of occupant satisfaction with indoor environmental quality in buildings as well as the effect of indoor environmental quality towards occupants’ satisfaction. This research applied post-occupancy evaluation as a method to indicate the building occupants’ needs, their satisfaction and comfort level. The research is based on a case study approach whereby a questionnaire survey was conducted among 25 organizations involved in managing office buildings. A total of 115 questionnaires were returned for evaluation of occupants’ overall satisfaction from aspects of indoor environmental quality in these buildings and to determine the occupants’ satisfaction level within these buildings. The findings revealed that indoor environment factors that could contribute to occupants’ satisfaction consists of lighting, air quality and aesthetic perception. These classifications were made based on the factor analysis done with 22 attributes of the indoor environment. The majority of occupants are satisfied with their health conditions and do not face any serious health problems. However, occupants highlighted that some environmental conditions, health effects, air movement, ventilation and air freshness are important criteria for their satisfaction and comfort. This study provides insights into how occupants perceive their indoor environment and comfort, and identify problems that could arise in buildings.

Residents’ Satisfaction of Indoor Environmental Quality in Their Old Apartment Homes

2010 ◽  
Vol 20 (1) ◽  
pp. 16-25 ◽  
Author(s):  
Sung Heui Cho ◽  
Tae Kyung Lee ◽  
Jeong Tai Kim
Keyword(s):  
Environmental Quality ◽  
Indoor Environment ◽  
Objective Evaluation ◽  
Indoor Environmental Quality ◽  
Analytic Hierarchy ◽  
High Rise ◽  
Technical Evaluation ◽  
Composition Factors ◽  
Hierarchy Process

The purpose of this study is to determine the characteristics of indoor environmental quality (IEQ) of old apartment homes and the residents’ satisfaction with living in these properties. About 168 households were surveyed in this study. The survey was based on the evaluation of deterioration using housing performance indicators and the questionnaire study. First, this study compared and analysed the results of both technical evaluation and residents’ satisfaction on the IEQ of old apartments based on case studies. Second, the study validated the IEQ evaluation of the home environments using multiple regression analyses based on residents’ satisfaction and their perception about the indoor environment. Third, the importance of the indoor environment composition factors contributing to the home environmental quality was assessed based on the survey of residents’ perception and experts’ opinions. Analytic hierarchy process was used to evaluate the housing experts’ opinions. The objective evaluation by technical criteria was also carried out to determine the conditions of the apartment homes. This study should contribute to elaborate evaluation models for the development of guidelines for the home environmental quality of high-rise and high-density old apartment buildings in Korea.

scholarly journals Indoor Environmental Quality performance of mixed-mode ventilated shopping malls in hot-humid climatic region

2018 ◽  
Vol 5 (3) ◽  
Author(s):  
Ibiyeye Aminat Idowu ◽  
Mohd Fakri Zaky Ja’afar ◽  
Zalina Shari ◽  
Nur Dalilah Dahlan
Keyword(s):  
Carbon Dioxide ◽  
Air Temperature ◽  
Environmental Quality ◽  
Indoor Air ◽  
Mixed Mode ◽  
Indoor Environment ◽  
Indoor Environmental Quality ◽  
Shopping Malls ◽  
Ventilation Strategies ◽  
Air Speed

Studies have revealed important roles quality indoor environment plays on human health and productivity; consequently, its influence on certain shopping behavior has also been well spelt out. In other to keep up with the demand for quality indoor environment, new trend has been evolving in the design of Malaysian shopping malls. From fully air-conditioned to newly designed ones that integrate passive ventilation strategies; and as such operating under mixed-mode ventilation system. These passive ventilation strategies are implemented to reduce energy consumption and also to improve the indoor environment within the mall’s indoor space. However, the potentials of these designs in terms of their indoor environmental quality (IEQ) performance have not been studied nor have their advantages been revealed. In this study, occupants’ thermal perception and IEQ performance was investigated in two mixed-mode ventilated malls selected based on their design concept (‘open’ and ‘enclosed’). Both subjective and objective measurements were carried out in accordance with the ASHRAE performance measurement protocol for commercial buildings. Five IEQ factors (indoor air temperature, operative temperature, relative humidity, air speed, and carbon dioxide concentration level) were evaluated in the two malls. The results revealed that both malls fell below the ASHRAE comfort requirement but majority of the occupants still found the indoor thermal performance acceptable despite the high indoor air temperature recorded. For both malls, high air speed and low humidity level were recorded. However, higher air movement was still preferred by the occupants while the recorded mean carbon dioxide (CO2) concentration was within the recommended level. The ‘open’ concept mixed-mode ventilated mall proved superior compared to the ‘enclosed’ concept by providing a more thermally tolerance indoor environment for its occupants. Generally, results from this study contribute to the knowledge on the advantages of adopting sustainable designs in commercial buildings for improving the indoor environment as well as the health and general well-being of the occupants. The study will open more opportunities for future IEQ studies to be carried out in hot-humid climatic regions.

scholarly journals An Assessment of Indoor Environmental Quality in School Buildings in the State of Kuwait

2019 ◽  
Vol 2 (2) ◽  
pp. 5
Author(s):  
Jamal Al-Hubail ◽  
Abdul-Salam Al-Temeemi
Keyword(s):  
Environmental Quality ◽  
Indoor Environment ◽  
Measured Data ◽  
The State ◽  
School Buildings ◽  
Indoor Environmental Quality ◽  
Environment Quality ◽  
Design Engineers ◽  
Indoor Environment Quality ◽  
The State Of Kuwait

In this study, indoor quality and environmental comfort were investigated in secondary school buildings located in the State of Kuwait. Comfort variables such as temperature and relative humidity (thermal comfort), noise (acoustic comfort), illumination (visual comfort), as well as allocated classroom floor area per student (spatial comfort) were measured. Data was collected over a 7-month period on a spot basis during school hours in student-occupied classrooms at 46 selected schools. The measured data was then compared to international guidelines and standards related to indoor environment quality. The data for noise and allocated space were shown to be in the comfort ranges in all the schools. However, 11% of the schools are not adequately illuminated, 33% had temperatures not within the recommended limits, and 22% of the schools had humidity levels either higher or lower than the recommended levels. Also, 9% of the schools had low illumination readings.In addition, during the data monitoring, a survey was conducted by which the student occupants completed a questionnaire so that subjective and objective evaluations could be compared. The findings of the questionnaire displayed significant correlations between the measured data and some ailments and other complaints experienced by the students.Ultimately, the results found in this research will provide a baseline for comparison with future indoor environment quality assessments in buildings. Furthermore, recommendations are suggested in order to improve the environmental quality problems encountered in some of the schools, which may be beneficial for policymakers, facilities managers, and design engineers. 

scholarly journals Developing an Indoor Environment Assessment Tool for Residential Buildings

2020 ◽  
Vol 26 (11) ◽  
pp. 62-83
Author(s):  
Shalaw Hamza Hamad ◽  
Muamal Ibrahim
Keyword(s):  
Interior Design ◽  
Environmental Quality ◽  
Indoor Environment ◽  
Assessment Tool ◽  
Residential Buildings ◽  
Action Plan ◽  
Measurement Tool ◽  
Indoor Environmental Quality ◽  
Kurdistan Region ◽  
Space Condition

The Indoor Environmental Quality (IEQ) describes an indoor space condition that the wellbeing and comfortability are provided for the users. Many researchers have highlighted the importance of adopting IEQ criteria, although they are not yet well defined in the Kurdistan region. However, environmental quality is not necessary for the contemporary buildings of the Kurdistan Region, and there is no measurement tool in the Region. This research aims to develop an IEQ assessment tool for the Kurdistan region using Mixed method methodology, both qualitative and quantitative. Therefore, a Delphi Technique was used as a method initially developed as systematic, interactive forecasting on a panel of experts. Thirty-five Delphi Candidates have reached an agreement on selecting the criteria for the IEQ, as Spss and a particular equation has used to find criteria weights. As a result, seven criteria with 22 indicators have been selected by expert ratings. A computer-based tool (KIEQA) has been created based on the scores selected by experts. Research results show that good IEQ is essential for interior design. It also offers a suitable indoor environment for users. This research has many significant advantages since it can raise awareness of issues of indoor environmental quality for architects, experts, and policymakers. Furthermore, to draw up an action plan for existing and new interior design projects in the Kurdistan Region. Future researches may concentrate on the correlation between IEQ criteria and to develop this tool regarding different building typologies.

scholarly journals A methodology for the determination of indoor environmental quality in residential buildings through the monitoring of fundamental environmental parameters: A proposed Dwelling Environmental Quality Index

2016 ◽  
Vol 26 (6) ◽  
pp. 813-827 ◽  
Author(s):  
Marina Laskari ◽  
Stavroula Karatasou ◽  
Mat Santamouris
Keyword(s):  
Environmental Quality ◽  
Quality Index ◽  
Indoor Environment ◽  
Residential Buildings ◽  
Environmental Parameters ◽  
Building Blocks ◽  
Management Tool ◽  
Indoor Environmental Quality

This paper presents the methodology for the calculation of an indoor environmental quality indicator for residential buildings. The ‘Dwelling Environmental Quality Index’ has been developed with the purpose of assisting both households and property managers to identify potential problems with the indoor environment whilst ensuring that indoor environmental quality is not compromised in favour of energy saving. Based on the combined effect of three simple and commonly measured indoor environmental parameters – air temperature, relative humidity and CO2 concentrations; the index reflects in a single value the quality of indoor environmental conditions for the monitored period, in compliance with the European standard EN15251:2007. The application of the Dwelling Environmental Quality Index in single dwellings and in building blocks is demonstrated. The usability of the index as a communication and management tool for individual households and property managers is also demonstrated.

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