Field studies of thermal comfort across multiple climate zones for the subcontinent: India Model for Adaptive Comfort (IMAC)

Manu, Sanyogita; Shukla, Yash; Rawal, Rajan; Thomas, Leena; Dear, Richard de

doi:10.1016/j.buildenv.2015.12.019

Cited by 256 publications

(176 citation statements)

References 17 publications

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“…Six of the seven buildings (except Ind4) were designed with an explicit intent to include environmentally sustainable design features and principles, as detailed below. The Indian study buildings were part of the India Model for Adaptive Thermal Comfort (IMAC) (Manu et al, 2016) dataset and in all cases included active systems for cooling. Given the emphasis on combating overheating in this paper, some of the mixed-mode buildings in the IMAC study are not included here because they used active systems only for winter heating.…”

Section: Methodsmentioning

confidence: 99%

“…These data were originally collated to distil the adaptive models for naturally ventilated and mixed-mode buildings in the IMAC study (Manu et al, 2016) using the field methods and data analyses protocols of the ASHRAE RP-884 precedent (de Dear & Brager, 1998). The 'right here right now' survey was administered to occupants at each workplace, once per season -summer, winter and monsoon, with responses sought for thermal sensation, temperature preference and thermal acceptability, air movement preference, clothing insulation level and metabolic activity.…”

Section: Methodsmentioning

confidence: 99%

“…A recent field study (India Model of Adaptive Thermal Comfort -IMAC) (Manu, Shukla, Rawal, Thomas, & de Dear, 2016) found Indian occupants to be even more adaptive than predicted by the adaptive models for naturally ventilated buildings within ASHRAE-55, 2013 andEN 1525, reinforcing the socio-cultural notion of thermal comfort. Significantly, the IMAC study also established a single model of comfort for mixed-mode buildings that is statistically valid for both AC and naturally ventilated modes.…”

Section: Introductionmentioning

confidence: 99%

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Combating overheating: mixed-mode conditioning for workplace comfort

Thomas

2016

Building Research & Information

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Using post-occupancy evaluations of seven mixed-mode buildings -three in Australia and four in India -this paper demonstrates that effective mixed-mode conditioning (instead of year-round airconditioning) can deliver comfortable workspaces. Occupant feedback reinforces strong associations between overheating, thermal comfort, overall comfort and perceived productivity. However, differing levels of thermal acceptability within and between the Australian and Indian contexts are evident. Occupants in the Indian buildings were found to tolerate a wider range of temperatures when compared with Western contexts where lower temperature limits entrench an energy demand through a greater reliance on air-conditioning. The outcomes from the study suggest that the perception of overheating and consequent risk to building performance can be intensified when occupants perceive limited adaptive opportunity or problems are not rectified quickly, whereas perceived control is less important where building systems are user responsive. Occupants in three of the study buildings also perceived higher-than-anticipated comfort which could be attributable to well-liked attributes, such as break-out spaces, daylight and fresh air included in these buildings. The findings challenge designers and clients to develop userresponsive climate interactive workplaces that capitalize on spatial and mixed-mode environmental control to tackle the question of overheating.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Combating overheating: mixed-mode conditioning for workplace comfort

Thomas

2016

Building Research & Information

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“…Among research proving this very fact is the one in India claiming that PMV predicts warmer AMV (actual mean vote) [13]. Another research discovering a distinct result from PMV theory is the one in the Netherlands by using qualitative and quantitative data.…”

Section: Introductionmentioning

confidence: 99%

The comparison of vernacular residences’ thermal comfort in coastal with that in mountainous regions of tropical areas

Hermawan

Prianto

Setyowati

et al. 2017

AIP Conference Proceedings

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“…17). BH data was additionally compared to the newly created India Model for Adaptive Comfort (IMAC) (Manu et al 2016). For these comparisons, discomfort degree hours (DDH), as used by Pfafferott et al (2003Pfafferott et al ( , 2004 and Artmann et al (2008) were calculated for each case (Eqns.…”

Section: Comparison To Comfort Standardsmentioning

confidence: 99%

Performance, prediction, optimization, and user behavior of night ventilation

Landsman

Brager

Doctor-Pingel

2018

Energy and Buildings

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Previous studies have demonstrated a potential reduction in cooling load and improvement in comfort from the implementation of night ventilation. This paper describes the performance, in terms of indoor environmental conditions, of three buildings from both the U.S. and India that use night ventilation as their primary cooling method. The research methods used the following approach: 1) Assess the cooling strategy in relation to the adaptive comfort model; 2) Develop a hybrid model, using both first principle equations and the collected data, to predict the instantaneous air and mass temperatures within each building and use the model to assess performance of the cooling strategy; 3) Determine an optimized ventilation control strategy for each building to minimize energy and maintain comfortable temperatures. 4) Develop a statistical model using collected data to predict the window opening pattern for occupants of a building using natural night ventilation. The study yielded the following results: 1) The buildings in the mild climate are successfully keeping the indoor temperature low, but also tend to be overcooling; 2) The night ventilation strategy has very little impact on indoor conditions of the buildings in the mild climate;3) The impact of night ventilation is less significant when there is low internal loads and heavy mass; 4) The building in the hot and humid climate is keeping the indoor temperature within the comfort bounds for 88% of the year; 5) The night ventilation strategy has advantageous impact on indoor conditons of the building in the hot and humid climate, but not enough to cool the space on its own; 6) Model predictive control has the potential to further improve the performance of night ventilation. 7) Window opening behavior for the building using natural night ventilation is most heavily dependent on indoor air temperature and mass temperature.

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Field studies of thermal comfort across multiple climate zones for the subcontinent: India Model for Adaptive Comfort (IMAC)

Cited by 256 publications

References 17 publications

Combating overheating: mixed-mode conditioning for workplace comfort

Combating overheating: mixed-mode conditioning for workplace comfort

The comparison of vernacular residences’ thermal comfort in coastal with that in mountainous regions of tropical areas

Performance, prediction, optimization, and user behavior of night ventilation

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