Occupant thermal feedback for improved efficiency in university buildings

Pritoni, Marco; Salmon, Kiernan; Sanguinetti, Angela; Morejohn, Joshua; Modera, Mark

doi:10.1016/j.enbuild.2017.03.048

Cited by 65 publications

(41 citation statements)

References 11 publications

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“…Advances in smartphone technologies have made it easy to directly collect thermal sensation data from building occupants (occupant feedback). Some studies have used such occupant feedback via smartphones or PC applications for HVAC control [7][8][9][10][11][12]. These studies aimed at utilizing occupant feedback data to realize energy conservation while maintaining occupant comfort.…”

Section: Introductionmentioning

confidence: 99%

A field study of space heating control using acceptable set-point temperature estimation: winter experiment in Japan office

Yano

Sako

2019

E3S Web Conf.

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Energy conservation for space heating is important because a large portion of total energy consumption is used for space heating in cold regions. For example, space heating accounts for 40% and 18% of energy consumption in non-residential buildings in the EU and Japan, respectively. We have recently proposed a new space-heating control method that estimates acceptable set-point temperature based on survival analysis of historical data on set-point temperature adjustments by occupants in a space. By using survival analysis to estimate acceptable set-point temperatures, the proposed method adjusts the setpoint temperature of the space to the estimated minimum acceptable value. We present the results of a field study of the proposed method which was performed in winter 2017-2018 in Japan. In this study, we applied the proposed method in two office rooms and assessed energy savings and occupant acceptance ratios for the proposed method. Performance evaluation experiments were carried out twice in the winter. The energysaving rate was from 3% to 45%, and the occupant acceptance ratio exceeded 80% in both experiments. The results obtained in this study confirm that the proposed method is acceptable to occupants, while having a possibility of energy-saving.

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Section: Introductionmentioning

confidence: 99%

A field study of space heating control using acceptable set-point temperature estimation: winter experiment in Japan office

Yano

Sako

2019

E3S Web Conf.

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“…The importance of educational institutions as deliverers of "green" virtuous behaviours is demonstrated by the recent growing interest in university campuses and in their research for sustainable strategies in terms of energy efficiency [1,2], mobility [3][4][5], waste management [6][7][8][9] and, in general, carbon footprint [10][11]. The recent introduction of green university rankings is expected to stimulate further efforts in this field [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Parameters analysis for a sustainable management of solid waste in university buildings

et al. 2020

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Educational institutions and, specifically, university campuses are large energy consumers and waste producers. The impact of university campuses on the local waste management increases with decreasing the size of the city/town where universities are located. Following the growing interest of the scientific community on the research for strategies to improve the environmental sustainability of educational institutions, this paper aims at proposing specific parameters to 1) measure the performance of university buildings in waste management, 2) detect anomalous situations that require improvements and 3) implement ameliorative actions. Specifically, parameters like the per-capita or surface-specific waste generation could help identifying the structures that may require primary interventions. With reference to the case of a medium-size university, the paper points out the advantages of the punctual tariff system for waste management adopted by the local utility company and critically analyses its weak points. Overall, this system offers great opportunities for improving waste management and for cost savings, but requires careful management policies by public institutions.

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“…Motivated by the prevalence of the information and communication technologies (ICT), the starting point was the use of electronic surveys [8,9] to digitize the process of distributing, collecting, and analysing questionnaires and facilitate the data collection process. Hence, large scale occupant comfort voting data have been conveniently collected (e.g., over 10,000 votes were collected within one year [10]), which has contributed to context-aware HVAC operational strategies. This strategy aims to offer personalized comfort zones based on occupants' thermal preferences (hereinafter, this operation is called comfort-aware HVAC operation in this study).…”

Section: Introductionmentioning

confidence: 99%

Spatial Efficacy of Respiration Monitoring using Doppler Radars for Personalized Thermal Comfort Assessment

Jung¹,

Jazizadeh²

2019

Proceedings of the International Symposium on Automation and Robotics in Construction (IAARC)

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Recent research efforts have shown that human thermophysiological features could play a crucial role in inferring occupants' thermal comfort, which is required for comfort-aware heating, ventilation, and air conditioning (HVAC) operation. Our previous studies have demonstrated that variations of respiration, a representative human thermophysiological feature, can be non-intrusively quantified by a Doppler radar sensor (DRS). However, in pursuit of enabling human-aware rooms in buildings, in this study we have explored the impact of distance and position of the respiration monitoring system to investigate the potential of DRS systems as a ubiquitous apparatus in the realworld scenarios. Through experimental studies, respiration characteristics were evaluated in different locations and angles relative to the location of the measurement device. The measurements were carried out using a DRS system and a respiratory belt for ground truth data collection. The noise artifacts were reduced by applying the Savitzky-Golay method and Hann window, and respiration was identified by selecting the frequency component with the maximum amplitude in the typical breathing frequency range (0.1 to 0.5 Hz). Our analyses demonstrated that the signal from a costeffective DRS technology without the use of external amplifiers could cover a range, within 1.0m longitudinally and 0.5m laterally, which is sufficient for an individual sensing given a normal office environment. It was also observed that the use of an external amplifier extends the range of the DRS sensing but at the same time accentuates the noise. Therefore, advanced noise removal methods are needed to increase the range of robust sensing. This study contributes to DRS deployment strategies for realization of comfort-aware systems.

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Occupant thermal feedback for improved efficiency in university buildings

Cited by 65 publications

References 11 publications

A field study of space heating control using acceptable set-point temperature estimation: winter experiment in Japan office

A field study of space heating control using acceptable set-point temperature estimation: winter experiment in Japan office

Parameters analysis for a sustainable management of solid waste in university buildings

Spatial Efficacy of Respiration Monitoring using Doppler Radars for Personalized Thermal Comfort Assessment

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