Adaptive Thermal Comfort: Foundations and Analysis

Humphreys, Michael; Nicol, Fergus; Roaf, Susan

doi:10.4324/9781315765815

Cited by 106 publications

(123 citation statements)

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“…PMV model was deterministic in nature and was based on physics of heat exchange and physiology of human thermal regulation. 25 It did not consider the aspect of adaptive human behavior and assumed building occupants as passive recipients to environmental conditions which do not interact with the space. 20,26 After the introduction of PMV model in the 1970s, several experimental and laboratory studies were carried out to test its validity and application range.…”

Section: Backg Rou N Dmentioning

confidence: 99%

Rethinking indoor thermal comfort in the era of rebound and pre‐bound effect for the developing world: A systematic review

2020

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Indoor Air. 2020;30:377-395. | 377 wileyonlinelibrary.com/journal/ina | INTRODUC TI ONThermal comfort is defined as the condition of mind which expresses satisfaction within the thermal environment and is assessed by subjective evaluation. 1 Though this definition aptly stresses on judgment of comfort being a cognitive process, it does not describe precisely as to what is meant by the condition of mind or satisfaction. 2 Thermal comfort, in general, depends on six environmental and personal parameters-air temperature, mean radiant temperature, air velocity, relative humidity, clothing level, and metabolic rate. 3 The adaptive model further considers the effects of psychological, physiological, and behavioral aspects in determining comfort but only at an aggregated level. Moreover, aspects related to sociocultural practices, thermal history, context, and income are not comprehensively considered in the existing thermal comfort models. 4-6 This increases the complexities in evaluating thermal comfort and hence even after significant years of research in this domain, predicting conditions to ensure comfort remains imprecise.Thermal comfort studies are necessary because they have a significant impact on occupant's health, well-being, and productivity. [7][8][9] Long-term exposure of subjects to indoor environments, which are not acceptable, causes discomfort leading to negative health impacts. 8 At the same time, in the era of energy deficit and prudent energy consumption, the need to study thermal comfort becomes even more crucial as it dictates the energy use in buildings. 10,11 Additionally, increasing dispensable income, lowering cost of energy services and the desire for thermal delight among the occupants has led to changes in comfort preferences, behavior, and usage patterns. AbstractThis paper presents a review on thermal comfort research that is informed by changes in occupant behavior, lifestyle, and income leading to rebound or pre-bound effect. It explores the current state of research in thermal comfort domain through a systematic review to identify the gaps and opportunities specifically focusing on energyintensive developing countries. This review argues that adaptive thermal comfort is a continuously evolving domain owing to dynamic modifications in occupant behavior occurring from changes in the cost of energy services and preference of comfort (rebound/pre-bound effect). A conceptual framework linking thermal comfort, rebound/pre-bound effect, and occupant behavior is forwarded through the introduction of an exogenous factor related to occupant well-being. The results ascertain that there is a need of localized thermal comfort model with an occupant-centric approach that can help in enhancing comfort and reducing energy consumption. K E Y W O R D Sadaptation, behavior, India, occupant, rebound, thermal comfort

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Section: Backg Rou N Dmentioning

confidence: 99%

Rethinking indoor thermal comfort in the era of rebound and pre‐bound effect for the developing world: A systematic review

2020

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“…The adaptive comfort temperature in an adaptive model is predicted on the basis of the outside air temperature [2] [3]. Since, exergy is calculated by considering the outside air temperature as the environmental temperature [1], it can be surmised that there is a certain relationship between adaptation and exergy.…”

Section: Introductionmentioning

confidence: 99%

Sensitivity Numerical Analysis of Human Body Exergy Balance under an Unsteady-State Thermal Environment<br/> —Behavioral Adaptation Induced by Undesirable Cold Storage by Building Envelope in Winter

Isawa¹,

Shukuya²

2016

Health

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We analyzed the relationships between the human body exergy balance and behavioral adaptations induced by undesirable cold storage by a building envelope under an unsteady-state thermal environment in winter. The complex interaction of the warm exergy production by shivering, lifting of the shell ratio, and reduction of the blood flow rate was considered to constitute the physiological adaptation necessary for maintaining the constant core temperature, which was an important aspect in living organisms. In the case of intermittent use room, it was suggested that better thermal comfort and desirable behavioral adaptations, which decreased the consumption of fossil fuels, could be achieved if interior wooden cladding was used in constructions with building envelopes that had a comparatively large heat capacity, or in cases of wooden constructions in which the building envelope heat capacity was comparatively small.

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“…Sue Roaf, Fergus Nicol and Michael Humphreys worked with a team who over the years systematically not only provided the theoretical underpinnings for such a move through their work on thermal comfort in different climates but also sought to show through demonstrations and publications that way forward (Humphreys, Nicol, and Roaf 2015). Back then there was palpable hostility encountered when giving papers promoting the importance of using natural energy to power buildings (e.g.…”

Section: Running Buildings On Natural Energy: Design Thinking For a Dmentioning

confidence: 99%

Running buildings on natural energy: design thinking for a different future

Roaf

Nicol

2017

Architectural Science Review

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Adaptive Thermal Comfort: Foundations and Analysis

Cited by 106 publications

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Rethinking indoor thermal comfort in the era of rebound and pre‐bound effect for the developing world: A systematic review

Rethinking indoor thermal comfort in the era of rebound and pre‐bound effect for the developing world: A systematic review

Sensitivity Numerical Analysis of Human Body Exergy Balance under an Unsteady-State Thermal Environment<br/> —Behavioral Adaptation Induced by Undesirable Cold Storage by Building Envelope in Winter

Running buildings on natural energy: design thinking for a different future

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Adaptive Thermal Comfort: Foundations and Analysis

Cited by 106 publications

References 0 publications

Rethinking indoor thermal comfort in the era of rebound and pre‐bound effect for the developing world: A systematic review

Rethinking indoor thermal comfort in the era of rebound and pre‐bound effect for the developing world: A systematic review

Sensitivity Numerical Analysis of Human Body Exergy Balance under an Unsteady-State Thermal Environment&lt;br/&gt; —Behavioral Adaptation Induced by Undesirable Cold Storage by Building Envelope in Winter

Running buildings on natural energy: design thinking for a different future

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Sensitivity Numerical Analysis of Human Body Exergy Balance under an Unsteady-State Thermal Environment<br/> —Behavioral Adaptation Induced by Undesirable Cold Storage by Building Envelope in Winter