Thermal comfort and productivity in offices under mandatory electricity savings after the Great East Japan earthquake

Tanabe, Shin‐ichi; Iwahashi, Yuko; Tsushima, Sayana; Nishihara, Naoe

doi:10.1080/00038628.2012.744296

Cited by 83 publications

(46 citation statements)

References 4 publications

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“…Various questionnaires are applied to building evaluation with the aim of obtaining feedback from occupants concerning the performance of their buildings. They include the CBE occupant questionnaire (Tanabe et al, 2013;) the BUS questionnaire Lenior et al, 2012;Thomas, 2010) and others designed specifically for the study purpose Kaarlela-Tuomaala et al, 2009;Newsham et al, 2009). These questionnaires are designed to obtain the perception of occupants in the best way possible.…”

Section: Productivity Proxy Indicatorsmentioning

confidence: 99%

“…The results highlighted the importance of cultural and contextual factors (qualitative) that facilitate or limit comfort-related adaptions. Tanabe et al, (2013) used the CBE questionnaire to investigate thermal comfort and productivity in offices during mandatory electricity saving implementation. This survey was carried out in five office buildings in Tokyo under controlled temperature, illumination and ventilation levels.…”

Section: Page 18 Of 31 Facilitiesmentioning

confidence: 99%

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Can self-evaluation measure the effect of IEQ on productivity? A review of literature

Rasheed

Byrd

2017

Facilities

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The purpose of this review is to investigate the use of self-evaluation as a method for measuring the productivity of office workers. The objective is to highlight issues associated with self-evaluation and barriers to its insufficiency in capturing occupant productivity in its totality. The literature includes referred journal and conference papers. A review of available literature was carried out on the subject of perceptions studies and self-evaluation as well as occupant performance in the office environment. Studies that employed the use of self-evaluation (questionnaires or interview) as the sole method of measuring the effect of IEQ on productivity/performance were reviewed. The discussions carried out in this paper show that self-evaluation is compromised by various issues that significantly affect the validity of their results. As such, it is insufficient as a sole method for measuring occupant productivity (cognitive performance) and the influence of IEQ on it. This review is carried out on available literature on past studies. Empirical evidence is required to test the reliability of self -evaluation in measuring productivity and the effect of factors such as IEQ on it. We demonstrated that self-evaluation methods of measuring productivity were affected by various research related issues. They are insufficient and do not accurately measure productivity. As such, it cannot be claimed that a comfortable IEQ results in a productive occupant based on results from self-evaluation studies. If such claims are to be made, more accurate methods of assessment are required. This paper provides a novel view on the reliability of self -evaluation results on the effect of IEQ on productivity.Keywords: Occupant productivity, Indoor Environment Quality, Office environments. IntroductionBuilding performance concerning indoor environment quality (IEQ) has gained increasing attention in recent years. The fact that people spend around 90% of their time indoors (Klepeis et al., 2001) has made the implications of the indoor environment imperative to designers. There is evidence towards a consensus view that the IEQ conditions that result in comfort do, in fact, increase the productivity of occupants (Lan and Lain, 2009;Hameed and Amjad, 2009;Liu et al., 2010; Kekalainen et al., 2010). However, recent studies have findings that indicate that there is no causal link between occupant productivity and IEQ (Zhang et al., 2011;Mak and Lui, 2012;McCunn and Gifford, 2012;Healey and Webster-Mannison, 2012) in office environments. But this assumes that the methods of measuring productivity have validity. Perception study, expressly questionnaires that ask occupants to evaluate their perceived productivity ) is a conventional method that has been used to measure the cognitive performance of workers. A literature review carried out by Onyeizu (2015) wherein the author review past works on the relationship between IEQ and occupant productivity in Green office spaces showed that majority of studies in this subject area had empl...

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Section: Productivity Proxy Indicatorsmentioning

confidence: 99%

Section: Page 18 Of 31 Facilitiesmentioning

confidence: 99%

Can self-evaluation measure the effect of IEQ on productivity? A review of literature

Rasheed

Byrd

2017

Facilities

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“…Tanabe et al (2013) mostram, contudo, que houve uma queda de produtividade em escritórios, afetada pelas condições térmicas após as medidas de setsuden. Yu et al (2012) testaram o efeito do uso frequente de climatização artificial versus o não-uso (indivíduos habituados a ambientes naturalmente ventilados) em câmara climática.…”

Section: Tabela 2 -Comparações Agrupadas De Votos De Sensação Térmicaunclassified

Quantificação dos impactos da climatização artificial na sensação térmica de transeuntes em termos de alterações no microclima

Krüger

Drach

2017

urbe, Rev. Bras. Gest. Urbana

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Quantificação dos impactos da climatização artificial na sensação térmica de transeuntes em termos de alterações no microclimaQuantifying the impacts of air conditioning on the thermal sensation of pedestrians in terms of changes in microclimate [a] Universidade Tecnológica Federal do Paraná, Curitiba, PR, Brasil [b] Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brasil ResumoO presente estudo analisa efeitos do uso de ar-condicionado na sensação térmica devido a interferências na aclimatação de indivíduos no espaço aberto, a partir de estudo de campo no centro do Rio de Janeiro. Campanhas de monitoramento foram realizadas em períodos quentes entre 2012 e 2015, com uso de estação meteorológica concomitantemente à aplicação de questionários estruturados segundo a ISO 10551, aos quais se incluíram questões acerca do uso de ar-condicionado. O índice de conforto utilizado para interpretar dados microclimáticos foi o UTCI (Universal Thermal Climate Index). Dos resultados obtidos, notou-se que o uso frequente de ar-condicionado impacta a percepção térmica dos usuários, interferindo na definição de limites de conforto. Verificou-se uma queda de 2°C em unidades UTCI para uma situação de início de estresse térmico por calor para o grupo menos aclimatado (usuários habituais de ambientes climatizados artificialmente), fato que sugere redução na tolerância térmica ao calor dessa população. A partir dos resultados encontrados e para o desenvolvimento da área de conforto em espaços abertos no Brasil (cuja maior parte do território apresenta clima tropical), no que tange a levantamentos de percepção térmica junto à população, recomenda-se a introdução do questionamento acerca do uso de ar-condicionado.Palavras-chave: Microclima urbano. Climatização artificial. Conforto em espaços abertos.EK é Engenheiro civil, Doutor em Arquitetura -Leiniz Universität Hannover,

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“…Since 2005, the government of Japan has run a "Cool Biz" campaign encouraging the wearing of more casual clothing at work in order to make higher indoor air temperatures more tolerable. Although some reports indicate annoyance at the higher temperatures (Tanabe, Iwahashi, Tsushima, & Nishihara, 2013), that the scheme has been running for nearly a decade indicates some success, particularly as the annoyance appears to occur mainly at temperatures greater than 27 C. Both the "Cool Biz" campaign and the fundamental re-examination of comfort highlight the hitherto little-considered role of policy on the requirements of a control system. A further issue is the necessity to define the controlled states, e.g.…”

Section: The Role Of Occupantsmentioning

confidence: 99%

Model-predictive control for non-domestic buildings: a critical review and prospects

Rockett

Hathway

2016

Building Research & Information

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Model-predictive control (MPC) has recently excited a great deal of interest as a new control paradigm for non-domestic buildings. Since it is based on the notion of optimisation, MPC is, in principle, well-placed to deliver significant energy savings and reduction in carbon emissions compared to existing rule-based control systems. In this paper, we critically review the prospects for buildings MPC and, in particular, the central role of the predictive mathematical model that lies at its heart; our clear emphasis is on practical implementation rather than control-theoretic aspects, and covers the role of occupants as well as the form of the predictive model. The most appropriate structure for such a model is still an open question, which we discuss alongside the development of the initial model, and the process of updating the model during the building's operational life. The importance of sensor placement is highlighted alongside the possibility of updating the model with occupants' comfort perception. We conclude that there is an urgent need for research on the automated creation and updating of predictive models if MPC is to become an economically-viable control methodology for non-domestic buildings. Finally, more evidence through operating full scale buildings with MPC is required to demonstrate the viability of this method.

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Thermal comfort and productivity in offices under mandatory electricity savings after the Great East Japan earthquake

Cited by 83 publications

References 4 publications

Can self-evaluation measure the effect of IEQ on productivity? A review of literature

Can self-evaluation measure the effect of IEQ on productivity? A review of literature

Quantificação dos impactos da climatização artificial na sensação térmica de transeuntes em termos de alterações no microclima

Model-predictive control for non-domestic buildings: a critical review and prospects

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