Search results
21 – 30 of over 29000Meshack O. Efeoma and Ola Uduku
The purpose of this paper is to adduce the most appropriate thermal comfort assessment method for determining human thermal comfort and energy efficient temperature control in…
Abstract
Purpose
The purpose of this paper is to adduce the most appropriate thermal comfort assessment method for determining human thermal comfort and energy efficient temperature control in office buildings in tropical West Africa.
Design/methodology/approach
This paper examines the Adaptive Thermal Comfort Standard, from its research evolution to its contemporary use as an environmental design assessment Standard. It compares the adaptive component of ASHRAE Standard 55 and the European CEN/EN 15251. It begins by reviewing relevant literature and then produces a comparative analysis of the two standards, before suggesting the most appropriate Adaptive Thermal Comfort Standard for use in assessing conditions in tropical climate conditions. The suggested Standard was then used to analyse data collected from the author's pilot research into thermal conditions, in five office buildings situated in the city of Enugu, South Eastern Nigeria.
Findings
The paper provides insight as to why the ASHRAE adaptive model is more suitable for thermal comfort assessment of office buildings in the tropical West African climate. This was demonstrated by using the ASHRAE Thermal Comfort Standard to assess comfort conditions from pilot research study data collected on Nigerian office buildings by the author.
Originality/value
The paper compares the adaptive component of ASHRAE Standard 55 with CEN/EN 15251, and their different benefits for use in tropical climates. It suggested the need for further research studies and application of the ASHRAE Adaptive Thermal Comfort Standard in the tropical West African climate.
Details
Keywords
Mark Scott Rosenbaum, Tali Seger-Guttmann and Ofir Mimran
The purpose of this paper is to explore the concept of customer discomfort in service settings when employees and customers who share social incompatibilities, stemming from war…
Abstract
Purpose
The purpose of this paper is to explore the concept of customer discomfort in service settings when employees and customers who share social incompatibilities, stemming from war, nationalism, religious differences or terrorism, work together in service settings.
Design/methodology/approach
The authors engage in triangulation research to understand how Israeli Arabs and Jews experience comfort/discomfort in services. Study 1 uses an experimental design to show how comfort differs when Israeli Jews work with Arabs and Jews in three different service settings. Study 2 employs survey methodology to explore how comfort differs among Israeli Arabs when they work with either an Arab or a Jewish employee. Study 3 uses grounded theory methodology to provide a theoretical framework that explains reasons for customer discomfort occurrence between Israel’s Arabs and Jews, its impact on customers’ attitudes and behaviors and suggestions for increasing comfort.
Findings
Israeli Arabs and Jews express various feelings of discomfort when working with each other, and Druze, in service settings. Israeli Jews express higher levels of discomfort when working with Arabs than vice versa, while Israeli Arabs express discomfort when working with Druze employees. Five strategies for increasing customer comfort are defined and developed.
Research limitations/implications
Social incompatibilities prevent many consumers and employees from experiencing comfort during service exchanges; however, managers can alleviate some of the factors that exacerbate customer discomfort.
Practical implications
Managers need to realize that customer discomfort leads to place avoidance and thus should implement strategies to assuage it.
Social implications
Unabated service situations that result in customer discomfort may lead to customer ill-being, including fear.
Originality/value
This study is the first to explore customer discomfort due to social incompatibilities in depth.
Details
Keywords
Mohammad Yasser Arafat and Sonal Atreya
The study investigates the relationship between hospital environmental factors and the well-being of geriatric in-patients. It aims to identify the impact of architectural design…
Abstract
Purpose
The study investigates the relationship between hospital environmental factors and the well-being of geriatric in-patients. It aims to identify the impact of architectural design on comfort, safety, privacy and stress levels experienced by elderly patients during their hospital stays.
Design/methodology/approach
Employing a mixed-methods approach, the research assesses the experiences of 100 geriatric in-patients across various hospital types through surveys, observational checklists and state anxiety measurements. The methodology involves examining architectural features, patient perceptions and correlations among environmental variables and patient experiences. Statistical analyses, including correlations and chi-square tests, were employed to discern associations between environmental variables and patient experiences.
Findings
The research identified key architectural features significantly impacting geriatric patients' experiences. Factors such as sturdy beds, furniture quantity, lighting conditions, proximity to facilities and ward occupancy levels were found to influence spatial, sensory and social comfort. Notably, proximity to facilities and control over the immediate environment were crucial for self-control and safety perceptions. Privacy, highly valued by patients, correlated with the presence of curtains and ward occupancy. Moreover, patient stress levels exhibited correlations with autonomy, privacy and ward occupancy.
Originality/value
This research offers significant insights into the criticality of specific architectural elements in enhancing comfort and reducing stress for geriatric in-patients. These findings hold substantial value for healthcare facility design, emphasizing the need to prioritize certain design aspects to promote the well-being of elderly patients during hospitalization.
Details
Keywords
Fateme Akhlaghinezhad, Amir Tabadkani, Hadi Bagheri Sabzevar, Nastaran Seyed Shafavi and Arman Nikkhah Dehnavi
Occupant behavior can lead to considerable uncertainties in thermal comfort and air quality within buildings. To tackle this challenge, the use of probabilistic controls to…
Abstract
Purpose
Occupant behavior can lead to considerable uncertainties in thermal comfort and air quality within buildings. To tackle this challenge, the use of probabilistic controls to simulate occupant behavior has emerged as a potential solution. This study seeks to analyze the performance of free-running households by examining adaptive thermal comfort and CO2 concentration, both crucial variables in indoor air quality. The investigation of indoor environment dynamics caused by the occupants' behavior, especially after the COVID-19 pandemic, became increasingly important. Specifically, it investigates 13 distinct window and shading control strategies in courtyard houses to identify the factors that prompt occupants to interact with shading and windows and determine which control approach effectively minimizes the performance gap.
Design/methodology/approach
This paper compares commonly used deterministic and probabilistic control functions and their effects on occupant comfort and indoor air quality in four zones surrounding a courtyard. The zones are differentiated by windows facing the courtyard. The study utilizes the energy management system (EMS) functionality of EnergyPlus within an algorithmic interface called Ladybug Tools. By modifying geometrical dimensions, orientation, window-to-wall ratio (WWR) and window operable fraction, a total of 465 cases are analyzed to identify effective control scenarios. According to the literature, these factors were selected because of their potential significant impact on occupants’ thermal comfort and indoor air quality, in addition to the natural ventilation flow rate. Additionally, the Random Forest algorithm is employed to estimate the individual impact of each control scenario on indoor thermal comfort and air quality metrics, including operative temperature and CO2 concentration.
Findings
The findings of the study confirmed that both deterministic and probabilistic window control algorithms were effective in reducing thermal discomfort hours, with reductions of 56.7 and 41.1%, respectively. Deterministic shading controls resulted in a reduction of 18.5%. Implementing the window control strategies led to a significant decrease of 87.8% in indoor CO2 concentration. The sensitivity analysis revealed that outdoor temperature exhibited the strongest positive correlation with indoor operative temperature while showing a negative correlation with indoor CO2 concentration. Furthermore, zone orientation and length were identified as the most influential design variables in achieving the desired performance outcomes.
Research limitations/implications
It’s important to acknowledge the limitations of this study. Firstly, the potential impact of air circulation through the central zone was not considered. Secondly, the investigated control scenarios may have different impacts on air-conditioned buildings, especially when considering energy consumption. Thirdly, the study heavily relied on simulation tools and algorithms, which may limit its real-world applicability. The accuracy of the simulations depends on the quality of the input data and the assumptions made in the models. Fourthly, the case study is hypothetical in nature to be able to compare different control scenarios and their implications. Lastly, the comparative analysis was limited to a specific climate, which may restrict the generalizability of the findings in different climates.
Originality/value
Occupant behavior represents a significant source of uncertainty, particularly during the early stages of design. This study aims to offer a comparative analysis of various deterministic and probabilistic control scenarios that are based on occupant behavior. The study evaluates the effectiveness and validity of these proposed control scenarios, providing valuable insights for design decision-making.
Details
Keywords
Saghar Hashemi, Amirhosein Ghaffarianhoseini, Ali Ghaffarianhoseini, Nicola Naismith and Elmira Jamei
Given the distinct and unique climates in these countries, research conducted in other parts of the world may not be directly applicable. Therefore, it is crucial to conduct…
Abstract
Purpose
Given the distinct and unique climates in these countries, research conducted in other parts of the world may not be directly applicable. Therefore, it is crucial to conduct research tailored to the specific climatic conditions of Australia and New Zealand to ensure accuracy and relevance.
Design/methodology/approach
Given population growth, urban expansions and predicted climate change, researchers should provide a deeper understanding of microclimatic conditions and outdoor thermal comfort in Australia and New Zealand. The study’s objectives can be classified into three categories: (1) to analyze previous research works on urban microclimate and outdoor thermal comfort in Australia and New Zealand; (2) to highlight the gaps in urban microclimate studies and (3) to provide a summary of recommendations for the neglected but critical aspects of urban microclimate.
Findings
The findings of this study indicate that, despite the various climate challenges in these countries, there has been limited investigation. According to the selected papers, Melbourne has the highest number of microclimatic studies among various cities. It is a significant area for past researchers to examine people’s thermal perceptions in residential areas during the summer through field measurements and surveys. An obvious gap in previous research is investigating the impacts of various urban contexts on microclimatic conditions through software simulations over the course of a year and considering the predicted future climate changes in these countries.
Originality/value
This paper aims to review existing studies in these countries, provide a foundation for future research, identify research gaps and highlight areas requiring further investigation.
Details
Keywords
Rawi Roongruangsee, Paul Patterson and Liem Viet Ngo
The inherent characteristics of professional services (i.e. high in credence properties, customized and featuring information asymmetry) often cause difficulties for clients to…
Abstract
Purpose
The inherent characteristics of professional services (i.e. high in credence properties, customized and featuring information asymmetry) often cause difficulties for clients to confidently evaluate technical outcomes before, during or even after service delivery. This results in considerable client psychological discomfort. This study aims to blend a revised social interaction model and uncertainty reduction theory to investigate the role that service provider’s interpersonal communication style plays in establishing client psychological comfort and satisfaction in a health-care context.
Design/methodology/approach
The study draws on cross-sectional data collected from 355 hospital patients following visiting a physician plus an experimental design in an Eastern culture (Thailand).
Findings
The study reveals three key findings. First, an affiliative communication style is positively associated with psychological comfort, but not so a dominant communications style. When both styles are presented, the high-affiliative style overshadows the low-dominant style and creates the highest psychological comfort. Second, clients’ perceptions of professional’s affiliative and dominant styles influence psychological comfort differentially under varying conditions of clients’ cognitive social capital, collectivist value-orientation but not service criticality. Third, a competing model suggests psychological comfort acts as a partial mediator between affiliative communication style and satisfaction.
Research limitations/implications
To generalize the findings, further studies might be conducted in other professional services and in individualist Western cultures.
Practical implications
The findings have important managerial implications for the appropriate use of communication style to build psychological comfort and engage clients of professional services firms.
Social implications
The findings shed light on the important role of an everyday social function – interpersonal communications and how this impacts client psychological comfort and satisfaction.
Originality/value
This is one of the few studies in a services context that examines the impact of professionals’ communications style. Moreover, it examines the impact of cultural value-orientation, cognitive social capital, service criticality in moderating the communications style – client psychological comfort relationship.
Details
Keywords
Alvaro Garay, Angie Ruiz and Jose Guevara
This study aims to analyze the technical, environmental, economic and thermal comfort impacts of implementing passive measures and heating systems in Ciudad Verde, a large-scale…
Abstract
Purpose
This study aims to analyze the technical, environmental, economic and thermal comfort impacts of implementing passive measures and heating systems in Ciudad Verde, a large-scale social housing project located at the periphery of Bogota, Colombia.
Design/methodology/approach
A system dynamics (SD) model is proposed to evaluate scenarios through counterfactual experiments, including technical, environmental and economic components. Model inputs are obtained from building energy simulation models and data collected from official reports, public policy documents and construction records.
Findings
Results suggest that the use of heating systems is the best choice to achieve thermal comfort conditions throughout the day. However, both the capital expenditures and CO2 emissions associated with such system make their adoption very difficult. In line with that, the use of heating systems in combination with passive measures stands out as a viable solution since their costs are affordable and their use contributes to reducing CO2 emissions.
Originality/value
The proposed model recreates the dynamics underlying social housing construction processes, the adoption of heating systems and passive measures in low-income dwellings and their corresponding impact on CO2 emissions and indoor thermal comfort conditions. The model can be employed as a support tool in the formulation of social housing policies associated with thermal comfort specifications. In this way, the model represents a first step toward incorporating thermal-related variables into the decision-making processes related to social housing planning and development.
Details
Keywords
Albert P.C. Chan, Yang Yang, Francis K.W. Wong, Daniel W.M. Chan and Edmond W.M. Lam
– The aim of this study is to investigate wearing comfort of summer work uniforms judged by construction workers.
Abstract
Purpose
The aim of this study is to investigate wearing comfort of summer work uniforms judged by construction workers.
Design/methodology/approach
A total of 189 male construction workers participated in a series of wear trials and questionnaire surveys in the summer of 2014. They were asked to randomly wear two types of work uniforms (i.e. uniforms A and B) in the two-day field survey and the subjective attributes of these uniforms were assessed. Three analytical techniques, namely, multiple regression, artificial neural network and fuzzy logic were used to predict wearing comfort affected by the six subjective sensations.
Findings
The results revealed that fuzzy logic was a robust and practical tool for predicting wearing comfort in terms of better prediction performance and more interpretable results than the other models. Pressure attributes were further found to exert a greater effect than thermal–wet attributes on wearing comfort. Overall, the use of uniform B exhibited profound benefits on wearing comfort because it kept workers cooler, drier and more comfortable with less work performance interference than wearing uniform A.
Originality/value
The findings provide a fresh insight into construction workers’ needs for work clothes, which further facilitates the improvement in the clothing tailor-made design and the enhancement of the well-being of workers.
Details
Keywords
Omar Al-Hafith, Satish BK and Pieter de Wilde
Traditional central courtyards have been advocated for being thermally efficient for hot-climate regions. However, exploring previous literature shows that it is not clear to what…
Abstract
Purpose
Traditional central courtyards have been advocated for being thermally efficient for hot-climate regions. However, exploring previous literature shows that it is not clear to what extent courtyards are truly thermally comfortable. This study determines the level of thermal comfort in residential courtyards in hot-climate regions, taking Baghdad as a case study.
Design/methodology/approach
This study develops a novel Courtyard Thermal Usability Index (CTUI) to quantify the ability of courtyards to provide thermal comfort to occupants. CTUI is the fraction of useable thermally comfortable hours in courtyards of the total occupation hours during a specific period. To operationalise CTUI, the research employs the Envi-met 4.2 simulation tool to determine the annual thermal conditions of 360 courtyards. An adaptive thermal comfort model developed by Al-Hafith in 2020 for Iraq is used to judge simulated thermal conditions and determine CTUI.
Findings
CTUI enables determining the level of thermal comfort courtyards offer to occupants by showing the ratio of the thermally comfortable period versus the occupation period. Results show that, in Iraq, annually, courtyards offer up to 38% comfortable hours out of the total potential occupation hours. The rest of the time the courtyard will not be comfortable, mostly due to overheating. When designing courtyards, the most effective geometric property impacting courtyards' thermal conditions is width/height. The most important microclimatic factor impacting occupants' thermal sensation is mean radiant temperature (MRT). This study can be used to inform designing thermally efficient courtyards for hot-climate regions.
Originality/value
This study presents the first assessment of the thermal efficiency of courtyards in hot-climate regions depending on an assessment of their ability to provide thermal comfort to occupants. The study presents a novel index that can be used to quantify the ability of courtyards to provide a thermally comfortable environment to occupants.
Details
Keywords
Alison E. Lloyd and Sherriff T.K. Luk
This study seeks to investigate the service interaction behaviors that elicit a sense of comfort for the customer in the service encounter, and to investigate the mediating role…
Abstract
Purpose
This study seeks to investigate the service interaction behaviors that elicit a sense of comfort for the customer in the service encounter, and to investigate the mediating role of comfort on assessments of quality, customer satisfaction and positive word‐of‐mouth in two industries.
Design/methodology/approach
In‐depth interviews were used to create an initial list of interaction behaviors displayed by service employees in an encounter. A quantitative study was then used to collect data to empirically examine the relationship between the constructs of interest.
Findings
Two key groups of interaction behavior are identified and contain specific behaviors that create a sense of overall comfort for the customer. Overall comfort positively impacts both overall quality and customer satisfaction, and this ultimately leads to positive word‐of‐mouth.
Research limitations/implications
The research focuses on two industries only: fashion apparel retailing and casual dining restaurants. Future research needs to examine other industries, experiential or credence services, level of involvement or the impact of culture.
Practical implications
Managers are recommended to incorporate interaction behaviors into front‐line employee training and design of comfort‐enhancing strategies.
Originality/value
Research on employee behaviors and emotional aspects of the encounter is relatively scant, and this study investigates the specific behavioral repertoire that gives rise to an overall feeling of comfort in the service encounter. Although employee behavior is widely acknowledged to have an immense impact on the customer's evaluation of the encounter, there still exists much room to explore specific behaviors that are important for successful service delivery.
Details