THERMAL COMFORT AND VENTILATION CONDITIONS IN HEALTHCARE FACILITIES - PART 2: IMPROVING INDOOR ENVIRONMENT QUALITY (IEQ) THROUGH VENTILATION RETROFITTING

2020 ◽  
Vol 19 (11) ◽  
pp. 2059-2075
Author(s):  
Muhammad Jamaluddin Thaheem ◽  
Mawara Khan ◽  
Musfira Khan ◽  
Ahsen Maqsoom ◽  
Muhammad Zeeshan
Keyword(s):  
Thermal Comfort ◽  
Indoor Environment ◽  
Healthcare Facilities ◽  
Environment Quality ◽  
Indoor Environment Quality ◽  
Ventilation Conditions

Review on the Research of Indoor Environment Quality and Building Energy Consumption

2011 ◽  
Vol 90-93 ◽  
pp. 3043-3046 ◽  
Author(s):  
Xue Bin Yang ◽  
Zhi Pan Gu ◽  
Ji Chun Yang ◽  
Guang Ping Lin
Keyword(s):  
Energy Consumption ◽  
Thermal Comfort ◽  
Indoor Environment ◽  
Environmental Parameters ◽  
Building Energy ◽  
Building Energy Consumption ◽  
Humid Climate ◽  
Environment Quality ◽  
Adaptive Thermal Comfort ◽  
Indoor Environment Quality

This study reviews some published literatures to survey the recent research on indoor environment quality and building energy consumption. The indoor environment quality is categorized and defined as different indices and variables. The building energy consumption can be determined by ventilation rates, thermal comfort, adaptive thermal comfort, neutral temperature, set-point temperature, indoor air quality, air velocity, and non-occupied hours. Various climates or regions such as subtropical climates in Hong Kong, Italy, three climatic zones in Greece, hot and dry climates in Africa, hot and humid climate in Thailand, are contained. The building types include office buildings, commercial buildings and school buildings, and the data can be obtained from a simulation model or the field database. It can be concluded that the indoor environment quality has a significant influence on the building energy consumption, and a validated thermal model is be a practical tool to investigate the effect of the indoor environmental parameters.

scholarly journals Investigation of subjective and objective thermal comfort in the case of ceiling and wall cooling systems

2017 ◽  
Vol 8 (2) ◽  
pp. 153-162
Author(s):  
G. L. Szabó ◽  
F. Kalmár
Keyword(s):  
Thermal Comfort ◽  
Energy Saving ◽  
Indoor Environment ◽  
Heat Waves ◽  
Point Of View ◽  
Cooling Systems ◽  
Research Directions ◽  
Environment Quality ◽  
Summer Heat ◽  
Indoor Environment Quality

Energy saving in buildings is one of the most important research directions in the building sector. Energy saving solutions should not lead to decreased indoor environment quality. Because of the increased number of summer heat waves, cooling systems are widely used to assure thermal comfort in buildings. In this paper, ceiling cooling and wall cooling systems were tested and compared from the thermal comfort point of view using 24 subjects (12 women and 12 men). The cooling ceiling and wall surface and the supply/return temperatures were similar. Analysing the obtained subjective answers, no significant differences were obtained on average or by gender. However, significant differences were obtained between the subjective answers and the calculated PMV values. Furthermore, the occupant’s reaction was different after switching off the ventilation and cooling systems.

scholarly journals Assessment of Thermal Comfort in the Intelligent Buildings in View of Providing High Quality Indoor Environment

Energies ◽  
2020 ◽  
Vol 13 (8) ◽  
pp. 1973
Author(s):  
Grzegorz Majewski ◽  
Łukasz J. Orman ◽  
Marek Telejko ◽  
Norbert Radek ◽  
Jacek Pietraszek ◽  
...  
Keyword(s):  
Thermal Comfort ◽  
Indoor Environment ◽  
Thermal Environment ◽  
Thermal Sensation ◽  
Carbon Dioxide Concentration ◽  
Well Being ◽  
Environment Quality ◽  
Intelligent Buildings ◽  
Indoor Environment Quality ◽  
Very High

The paper analyses the indoor environment in two modern intelligent buildings located in Poland. Measurements of air and globe temperatures, relative humidity and carbon dioxide concentration in 117 rooms carried out in the space of 1.5 years were presented. Thermal comfort of the occupants has been investigated using a questionnaire survey. Based on 1369 questionnaires, thermal sensation, acceptability and preference votes were analysed in view of their interdependency as well as their dependency on operative temperature, which proved to be very strong. It has been found that the respondents did not completely rate thermal comfort and indoor environment quality as very high, although the overwhelming sensations were positive. Apart from the operation of heating, ventilation and air conditioning (HVAC) systems, this might have also been the cause of individual human factors, such as body mass index, as tested in the study, or the finding that people were generally in favour of a warmer environment. Moreover, thermal environment proved to be the most important element for ensuring the well-being of the occupants.

Literature Surveys on Benchmarking and Rating of Buildings

2011 ◽  
Vol 71-78 ◽  
pp. 3520-3523
Author(s):  
Xue Bin Yang ◽  
De Fa Sun ◽  
Xiang Jiang Zhou ◽  
Ji Chun Yang
Keyword(s):  
Air Quality ◽  
Thermal Comfort ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Indoor Environment ◽  
Energy Performance ◽  
Environment Quality ◽  
Indoor Environment Quality ◽  
Occupant Satisfaction ◽  
Comfort Criteria

This study reviews some published literatures on the benchmarking and ranking guidelines, tools and comparison of buildings. Energy performance, Indoor air quality and thermal comfort can be covered for the rating tools for buildings. Further, the energy performance can also be calculated by the other parameters related to the room thermal properties. A rating system to benchmark buildings can employ several parameters including indoor environment quality, clothing volume, predicted mean vote, operative temperature, and thermal energy consumption. It can be concluded that the indoor air quality or thermal comfort can be used to evaluate buildings due to their influence on the occupant satisfaction and job performance. Also, building benchmarking or rating will be various because Different comfort criteria may lead to different comfort temperature.

A Report on The Acoustic Conditions of IEQ Laboratory Using ISO 3382-3

2018 ◽  
Vol 10 (1) ◽  
pp. 19-26
Author(s):  
Jason Obadiah
Keyword(s):  
Indoor Environment ◽  
Environment Quality ◽  
Indoor Environment Quality ◽  
The Future ◽  
Open Plan ◽  
Acoustic Conditions

Recently, many facilities have completed new laboratories that may be used to assess various measures of Indoor Environment Quality (IEQ) in office spaces. Also recently, a new standard, ISO 3382-3, was released for assessing the effects of speech on IEQ in open plan offices. The aim of this report is to assess one room of the IEQ lab using the ISO 3382-3 standard. It is expected that the data gained will be of help to researchers using the facility in the future. Keywords: ISO 3382-3, Indoor Environment Quality, Acoustics

scholarly journals Polycyclic Aromatic Hydrocarbons in Indoor Dust Collected during the COVID-19 Pandemic Lockdown in Saudi Arabia: Status, Sources and Human Health Risks

2021 ◽  
Vol 18 (5) ◽  
pp. 2743
Author(s):  
Sultan Hassan Alamri ◽  
Nadeem Ali ◽  
Hussain Mohammed Salem Ali Albar ◽  
Muhammad Imtiaz Rashid ◽  
Nisreen Rajeh ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Saudi Arabia ◽  
Polycyclic Aromatic Hydrocarbons ◽  
Human Health ◽  
Aromatic Hydrocarbons ◽  
Indoor Environment ◽  
Indoor Dust ◽  
Environment Quality ◽  
Indoor Environment Quality ◽  
Polycyclic Aromatic

To control the spread of coronavirus disease (COVID-19), Saudi Arabia’s government imposed a strict lockdown during March–July 2020. As a result, the public was confined to indoors, and most of their daily activities were happening in their indoor places, which might have resulted in lower indoor environment quality. Polycyclic aromatic hydrocarbons (PAHs) were analyzed in household dust (n = 40) collected from different residential districts of Jeddah, Saudi Arabia, during the lockdown period. PAHs’ levels were two folds higher than the previously reported PAHs in indoor dust from this region. We detected low molecular weight (LMW) with two to four aromatic ring PAHs in all the samples with a significant contribution from Phenanthrene (Phe), present at an average concentration of 1590 ng/g of dust. Although high molecular weight (HMW) (5–6 aromatic ring) PAHs were detected at lower concentrations than LMW PAHs, however, they contributed >90% in the carcinogenic index of PAHs. The estimated daily intake (EDI) of specific PAHs was above the reference dose (RfD) for young children in high-end exposure and the calculated Incremental Lifetime Cancer Risk (ILCR) was >1.00 × 10−4 for both Saudi adults and young children. The study highlighted that indoor pollution has increased significantly during lockdown due to the increased indoor activities and inversely affect human health. This study also warrants to conduct more studies involving different chemicals to understand the indoor environment quality during strict lockdown conditions.

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