Research on Comfort Performance of Green Building and Conventional Building

2013 ◽  
Vol 312 ◽  
pp. 822-825
Author(s):  
Na Li
Keyword(s):  
Life Cycle ◽  
Cost Effectiveness ◽  
Work Environment ◽  
Environmental Quality ◽  
Green Building ◽  
Green Buildings ◽  
Indoor Environmental Quality ◽  
Development Costs

t has been argued that green buildings have a better indoor environmental quality than conventional buildings and that this translates into a more satisfying workplace for the building's occupants and, inturn, a more productive workforce. Assessing a building's cost effectiveness means taking into account all the costs that will be incurred during its life cycle not just development costs. People found no evidence to believe that green buildings are more comfortable than conventional building. In fact, the only difference between the buildings was that occupants of the green building were more likely to perceive their work environment as warm, and occupants who felt warm were more likely to describe their work environment as poor.

scholarly journals Performance Assessment of Green Rated Built Environment using Post Occupancy Evaluation

2019 ◽  
Vol 8 (4) ◽  
pp. 1449-1454
Keyword(s):  
Energy Efficiency ◽  
Life Cycle ◽  
Built Environment ◽  
Environmental Quality ◽  
Green Building ◽  
Quality Parameters ◽  
Indoor Environmental Quality ◽  
Habitat Assessment ◽  
Performance Parameters ◽  
Post Occupancy Evaluation

Green Rating Certification is one of the important mechanism developed in last few decades worldwide to achieve sustainability in Built Environment life cycle. The early generations of Green Rated Built Environment from India have occupied for several years now. Therefore, it has become inevitable to assess whether these Built Environment are living up to expectations in their objective terms. Post Occupancy Evaluation is a process of systematic monitoring of Building's performance with predefined parameters and objectives after it is occupied for few years. Present research focuses on assessment of Green Rated Built Environment on the basis of performance parameters. Indoor Environmental Quality (IEQ) and Energy Efficiency are two performance parameters identified for current research. Seven Green Rated Institutional/office projects have been selected for Post Occupancy Evaluation. Indian Green Building Council (IGBC) has rated three projects and Green Rating for Integrated Habitat Assessment (GRIHA) has rated remaining four buildings. All seven projects are located in warm and humid climatic zone of India. Questionnaire Survey, on site measurement of Indoor Environmental Quality parameters and Energy consumption records are selected as a tool to measure performance of Green rated project.

EVALUATION OF CREDIT ACHIEVEMENTS OF LEED-CERTIFIED BUILDINGS

2018 ◽  
Vol 5 (1) ◽  
Author(s):  
Gul Polat ◽  
Harun Turkoglu ◽  
Asli Pelin Gurgun ◽  
Naz Yikilmaz
Keyword(s):  
Environmental Quality ◽  
Green Building ◽  
Green Buildings ◽  
Indoor Environmental Quality ◽  
Water Efficiency ◽  
Renewable Materials ◽  
Investment Cost ◽  
High Investment ◽  
Low Levels ◽  
Different Levels

Nowadays, the concept of green building is no longer an alternative but a necessity. The acceptance of a building as “green” depends on having a certificate. LEED is one of the widely used green building certification systems in Turkey. The main objective of this study is to find out whether there were statistically significant differences between the credit achievements of 105 newly constructed and certified buildings in Turkey, which were certified according to four different levels, and to determine which of these credit achievements are weak. For this purpose, Kruskal-Wallis and Mann-Whitney U tests were performed and the findings were interpreted. Findings revealed that the highest level of achievement of these buildings was in sustainable sites, water efficiency, innovation in design, and regional priority credits, while the lowest level of achievement was in energy and atmosphere, materials and resources, and indoor environmental quality credits. Analyses revealed that the achievements in the energy and atmosphere, materials and resources, and indoor environmental quality credits of green buildings are relatively low when compared to the ones in other credits. There may be several reasons behind these low levels of achievement such as poor green culture, high investment cost of necessary systems, absence of reusable, recycled, and renewable materials. If these problems, most of which are peculiar to developing countries, can be overcome, higher certification levels can be achieved.

PERFORMANCE OF A GREEN BUILDING'S INDOOR ENVIRONMENTAL QUALITY ON BUILDING OCCUPANTS IN SOUTH AFRICA

2019 ◽  
Vol 14 (1) ◽  
pp. 131-148 ◽  
Author(s):  
Clinton Aigbavboa ◽  
Wellington Didibhuku Thwala
Keyword(s):  
South Africa ◽  
Environmental Quality ◽  
Negative Impact ◽  
Green Building ◽  
Building Design ◽  
Well Being ◽  
Green Buildings ◽  
The Body ◽  
Indoor Environmental Quality ◽  
Health Implications

Indoor environmental quality (IEQ) is important to the health, comfort, and well-being of building occupants. Unsatisfactory IEQ is associated with a number of phenomena, most notably, sick building syndrome (SBS), building-related illnesses (BRIs), and multiple chemical sensitivity (MCS), which have major negative effects on productivity. However, green building investors (owners) are not only concerned about reducing the negative impact of their buildings on the environment, but also about the potentially negative impact green buildings can have on their employees' productivity. This research sets out to address, through a questionnaire survey in South Africa, what constitutes the determinants of green building occupants' satisfaction with the IEQ elements of a green building and the health implications of a building's IEQ on the building occupants. Data analysis (involving a one-sample t-test) reveals some interesting findings in regard to what constitutes the determinants of green building occupants' satisfaction with the IEQ elements and the health implications of the IEQ elements of a five-star green rated building in South Africa. Findings from the survey revealed that the occupants of the building were not satisfied with the green building's IEQ, most especially the ineffectiveness of blocking natural and artificial lighting. Also, it was revealed that the IEQ with particular reference to the noise level and ventilation of the space has some serious health implications for the building occupants. The occupants' evaluation revealed that the major health issues from which they suffer include fatigue, headache, common cold, coughing, and influenza, and these affect their productivity and performance. Since building occupants are a rich source of information about IEQ assessment and its effect on productivity, the study can be used to assess the performance of green buildings, identify areas needing improvement, and provide useful feedback to designers and operators about specific aspects of green building design features and operating strategies that need improvement. This study adds to the body of knowledge on green buildings' IEQ performance.

scholarly journals Green Building Occupant Satisfaction: Evidence from the Australian Higher Education Sector

2018 ◽  
Vol 10 (8) ◽  
pp. 2890 ◽  
Author(s):  
Maryam Khoshbakht ◽  
Zhonghua Gou ◽  
Xiaohuan Xie ◽  
Baojie He ◽  
Amos Darko
Keyword(s):  
Environmental Control ◽  
Green Building ◽  
Building Design ◽  
Green Buildings ◽  
Facilities Management ◽  
Subtropical Climate ◽  
Indoor Environmental Quality ◽  
Artificial Lighting ◽  
The Individual ◽  
Occupant Satisfaction

Universities spend billions of dollars on green buildings as a sustainability commitment. This research investigates occupant satisfaction with indoor environmental quality (IEQ), building design (BD), and facilities management (FM) in five highly ranked green higher educational buildings in the subtropical climate of Australia, in comparison to nine non-green counterparts. The results disclose that the green building users were more consistently satisfied than the non-green building users with BD&FM elements, such as design, needs from facilities, building image, cleaning, the availability of meeting rooms, and storage. On the other hand, the study revealed weaknesses of green buildings in IEQ, such as noise, ventilation, and artificial lighting. The individual environmental control positively correlated with satisfaction in non-green buildings, but did not significantly affect satisfaction in green buildings. This study also identified the influences of non-environmental factors on occupant satisfaction, such as gender, age, sitting close to a window, hours spent in the building and in the workstation, and the number of people sharing office space. The research provides evidence and guidance for investing in, designing, and managing green educational facilities.

scholarly journals Assessing occupant comfort in an iconic sustainable education building

2012 ◽  
Vol 12 (3) ◽  
pp. 55-65 ◽  
Author(s):  
Rick Best ◽  
Brian Purdey
Keyword(s):  
Work Environment ◽  
Natural Ventilation ◽  
Green Building ◽  
Evaluation Study ◽  
Green Buildings ◽  
Sustainable Building ◽  
Post Occupancy Evaluation ◽  
Royal Institution ◽  
Occupant Comfort ◽  
Occupant Satisfaction

The building that houses the Mirvac School of Sustainable Development at Bond University is the first educational building to achieve a six Green Star rating from the Green Building Council of Australia. It has won numerous awards since opening in August 2008 including being judged the RICS (Royal Institution of Chartered Surveyors) Sustainable Building of 2009. After more than two years in use a post-occupancy evaluation study was carried out to assess the performance of the building from the viewpoint of the users; both resident staff and transient students. Results for factors such as lighting, thermal comfort, noise and air quality. were compared to benchmarks established by the Usable Buildings Trust. The evaluation also assessed the occupants’ perceptions of the building’s impact on their own productivity. Users generally find the building provides a comfortable work environment although a number of areas of performance were noted as posing some concerns. These included intrusive noise in some parts of the building and some issues with glare in daylit teaching spaces. Such concerns were found to be in accord with the results of previous studies and they highlight some recurrent problems in “green” buildings designed to maximise the use of natural ventilation and natural light. These design challenges and how occupant satisfaction is to be measured and benchmarked are also discussed in the context of this comparative building study.

Importance-performance analysis (IPA) of the indoor environmental quality (IEQ) of an EDGE-certified building in Ghana

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Kofi Agyekum ◽  
Elorm Emil Koku Akli-Nartey ◽  
Augustine Senanu Kukah ◽  
Amma Kyewaa Agyekum
Keyword(s):  
Performance Analysis ◽  
Environmental Quality ◽  
Gap Analysis ◽  
Green Buildings ◽  
Indoor Environmental Quality ◽  
Content Type ◽  
Artificial Lighting ◽  
Survey Results ◽  
Space Layout ◽  
Visual Privacy

PurposeThe excellence in design and greater efficiencies (EDGE) certification system has seen a gradual adoption worldwide, with Ghana having six out of its eight certified green buildings bearing an EDGE certification. However, little is known about occupants’ satisfaction with the indoor environmental quality (IEQ) of EDGE-certified buildings. Therefore, the purpose of this study is to examine the satisfaction of occupants with the IEQ of an EDGE-certified building in Ghana by identifying their perceived performance of the indoor environment relative to their perceived importance.Design/methodology/approachA survey was conducted to evaluate the performance of 12 IEQ parameters with the occupants of an EDGE-certified office building. The survey results were evaluated using a gap analysis and both traditional and alternative Importance-Performance Analysis (IPA) matrices.FindingsThe findings revealed that noise level, temperature, cleanliness, sound privacy, air quality and humidity were IEQs that required the highest priority for improvement. Daylight and artificial lighting showed no appreciable performance gap. Space layout was adequately satisfied, whereas space size was overly satisfied. Visual privacy and outdoor view were found to require low priority of improvement.Originality/valueThis study contributes to the state-of-the-art of the IEQ of green buildings. It pioneers the research that seeks to examine the IEQ of EDGE-certified buildings. The gap analysis and the IPA were effective in prioritizing the IEQs for improvement action and provided a practical research framework that helped researchers examine the performance of green buildings, thereby giving valuable feedback to policymakers and building owners.

GREEN CLEANING: AN ESSENTIAL ASPECT OF MALAYSIAN GREEN BUILDINGS

2015 ◽  
Vol 75 (10) ◽  
Author(s):  
Nurul Nadiah Zainol ◽  
Izran Sarrazin Mohammad ◽  
Maizan Baba ◽  
Neo Bee Woon ◽  
Abdul Qayyum Nazri
Keyword(s):  
Assessment Tool ◽  
Green Building ◽  
Green Buildings ◽  
Building Performance ◽  
Indoor Environmental Quality ◽  
Green Cleaning ◽  
Maintenance Stage ◽  
Operations And Maintenance ◽  
Reduce Energy Consumption ◽  
Specific Regulation

This paper discusses the importance of green cleaning for green buildings during the operations and maintenance stage. The investment on green buildings is often driven by the aim to reduce energy consumption. However, many tend to overlook the importance of the operations and maintenance aspect of the building, particularly the green cleaning aspect. Green cleaning is a major contributor to Indoor Environmental Quality (IEQ) where IEQ is one of the important criteria that should be considered during the assessment of green building performance. In Malaysia, there is no specific regulation set for green cleaning. Green Building Index (GBI) tools itself does not specifically highlighting green cleaning in their assessment tool. Thus, based on literature review, this paper discusses the benefits of implementing green cleaning and how green cleaning can contribute to achieving better green building performance.

scholarly journals Life Cycle Assessment and Indoor Environmental Quality of Wooden Family Houses

2020 ◽  
Vol 12 (24) ◽  
pp. 10557
Author(s):  
Silvia Vilčeková ◽  
Katarína Harčárová ◽  
Andrea Moňoková ◽  
Eva Krídlová Burdová
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Environmental Quality ◽  
Concrete Structures ◽  
Actual State ◽  
Indoor Environmental Quality ◽  
Suitable Alternative ◽  
Wooden Frame ◽  
The Creation ◽  
The Impact

This article analyzes in detail the impact of wooden houses on the environment using the life cycle assessment (LCA) methodology and at the same time evaluates the indoor environmental quality (IEQ) in these houses. The investigated detached family houses had a wooden structure. The first one had a bearing system made of a wooden frame; other materials were conventional. The second house was built entirely of log wood. Given the high risk of greenhouse gas emissions, the concentration of which in the atmosphere is causing global climate change, the global warming potential (GWP) indicator is crucial. According to results, the family house built entirely of wood and with a biomass boiler significantly reduces CO2 emissions and is therefore considered from the LCA point of view as a more suitable alternative compared to a house with a wooden frame structure. The building materials with the highest share involved in the creation of GWP include concrete structures (38–48%), ceramic roof tiles (33%) and plasterboard (15%). Plasterboard cladding (55%), concrete structures (17–19%), oriented strand board OSB (9–22%), impregnated wooden structures (31–52%) and plastic windows (9%) are the most involved in acidification potential (AP) and eutrophication potential (EP). Plasterboard structures (21%), impregnated wood materials (47.4%), reinforced concrete structures (12%) and mineral wool and roof tiles significantly contribute to the creation of photochemical ozone creation potential (POCP) and ozone depletion potential (ODP). The indoor environmental quality was evaluated through short-term measurements of basic physico-chemical parameters. Since both houses have different characteristics, the aim of this monitoring was to evaluate the actual state of IEQ in selected wooden houses under real conditions. Based on the recorded results, it can be stated that neither presented wooden house, in terms of thermal-humidity microclimate, concentration of CO2 and particulate matter, represents an environment with a negative impact on their occupants. With regards to volatile organic compounds (VOCs), the increased concentrations of xylenes and tetrachlorethylene in the log house were probably caused by the application of impregnation and protective coatings six months before monitoring. In this case, the concentration of tetrachloroethene, which is considered a potential carcinogen, was six times higher than the legislative limit. For VOCs, such as limonene, isobutylene and n-butylacetate, which were found in the wooden frame house, no limits are set. The legislative limits for xylenes and tetrachlorethylene in this house have not been exceeded, and therefore the IEQ cannot yet be considered harmful for health. The presence of all the mentioned VOCs in the interior air of the wooden frame house is more related to the activities of occupants, as this house has been inhabited for several years.

scholarly journals BIM-VE-Based Optimization of Green Building Envelope from the Perspective of both Energy Saving and Life Cycle Cost

2020 ◽  
Vol 12 (19) ◽  
pp. 7862
Author(s):  
Zhenmin Yuan ◽  
Jianliang Zhou ◽  
Yaning Qiao ◽  
Yadi Zhang ◽  
Dandan Liu ◽  
...  
Keyword(s):  
Life Cycle ◽  
Energy Saving ◽  
Life Cycle Cost ◽  
Architectural Design ◽  
Green Building ◽  
Building Energy ◽  
Green Buildings ◽  
Building Envelope ◽  
Analysis Model ◽  
Mathematical Formula

In the context of the increasingly severe energy crisis and global warming, green buildings and their energy-saving issues are being paid more attention in the world. Since envelope optimization can significantly reduce the energy consumption of green buildings, value engineering (VE) technology and building information modeling (BIM) technology are used to optimize the envelope of green buildings, which takes into account both energy saving and life cycle cost. The theoretical framework of optimization for green building envelope based on BIM-VE is proposed, including a BIM model for architecture, a life cycle cost analysis model, energy-saving analysis model, and a value analysis model. In the life-cycle cost model, a mathematical formula for the life-cycle cost is established, and BIM technology is used to generate a bill of quantity. In the energy-saving analysis model, a mathematical formula for energy saving is established, and BIM technology is used for the building energy simulation. In the scheme decision-making sub-model, VE technology integrating life cycle cost with energy saving is used to assess the envelope schemes and select the optimal one. A prefabricated project case is used to simulate and test the established methodology. The important results show that the 16 envelope schemes make the 16 corresponding designed buildings meet the green building evaluation standards, and the optimal envelope scheme is the “energy-saving and anti-theft door + exterior window 2+ floor 1+ exterior wall 1 + inner shear wall + inner partition wall 2 + planted roof” with the value 10.80 × 10−2 MW·h/ten thousand yuan. A significant finding is that the value generally rises with the increase of energy-saving rate while the life cycle cost is irregular with the increase of energy-saving rate. Compared with previous efforts in the literature, this study introduces VE technology into architectural design to further expand the current boundary of building energy-saving theory. The findings and suggestions will provide a valuable reference and guidance for the architectural design industry to optimize the envelope of green buildings from the perspective of both energy saving and life cycle cost.

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