Personal thermal comfort in dynamic indoor environments DOI Creative Commons
Tobias Kramer

Published: Jan. 1, 2024

This thesis explores how recent technological trends such as low-cost hardware, data science and AI can be used to improve personalise thermal comfort modelling. It integrates the design of a personal monitoring device, longitudinal field study development new framework for data-driven personalised long-term The underscores importance accommodating individual preferences spatial variations in dynamic indoor environments offers perspective on integration open-source technologies, methodologies, rethinking role contemporary building design.

Language: Английский

Challenges and opportunities of occupant-centric building controls in real-world implementation: A critical review DOI Creative Commons

Atiye Soleimanijavid,

Iason Konstantzos, Xiaoqi Liu

et al.

Energy and Buildings, Journal Year: 2024, Volume and Issue: 308, P. 113958 - 113958

Published: Feb. 14, 2024

Over the past few decades, attention in buildings’ design and operation has gradually shifted from promoting only energy efficiency objectives to also addressing human comfort well-being. Researchers have developed a wide range of control algorithms ranging rule-based controls complex learning approaches that can fully capture occupants’ personalized preferences smart buildings. This direction occupant-centric building bridge gap between satisfaction sustainability objectives. However, most these promising technologies not yet found their way into real-world applications. study will perform critical review on thermal lighting studies aiming (i) analyze strengths weaknesses different approaches; (ii) identify requirements for techniques be implemented systems; (iii) propose new research directions promote usability such catalyst towards adoption. Computational complexity, integration with Building Automation Systems (BAS), data availability quality, scalability, lack more featuring actual implementation emerge as barriers. Addressing challenges is imperative successful deployment

Language: Английский

Citations

19

A hybrid active learning framework for personal thermal comfort models DOI Creative Commons
Zeynep Duygu Tekler, Yue Lei, Yuzhen Peng

et al.

Building and Environment, Journal Year: 2023, Volume and Issue: 234, P. 110148 - 110148

Published: March 1, 2023

Personal thermal comfort models are used to predict individual-level responses inform design and control decisions of buildings achieve optimal conditioning for improved energy efficiency. However, the development data-driven requires collecting a large amount sensor-related measurements user-labelled data (i.e., user feedback) accurate predictions, which can be highly intrusive labour intensive in real-world applications. In this work, we propose hybrid active learning framework reduce collection costs developing data-efficient robust personal that users' air movement preferences. Through proposed framework, evaluated performance two algorithms Uncertainty Sampling Query-by-Committee) labelling strategies (Independent Joint Labelling strategies) reduction effort modelling. The effectiveness was demonstrated on dataset involving 58 participants collected over 10 working days with 2,727 under 16 conditions. final results showed 46% 35% preference models, respectively, increasing reductions occurring time when encountering new users. insights gained study, future studies adopt as viable effective solution address high cost while maintaining model's scalability predictive performance.

Language: Английский

Citations

31

Human physiology for personal thermal comfort-based HVAC control – A review DOI Creative Commons
Dragos‐Ioan Bogatu, Jun Shinoda,

José Joaquín Aguilera

et al.

Building and Environment, Journal Year: 2023, Volume and Issue: 240, P. 110418 - 110418

Published: May 22, 2023

Standardized methods for thermal comfort assessment already exist, namely the predicted mean vote (PMV) and adaptive model, both valid groups of people. To identify whether a specific person is comfortable under different factors such as thermal, air quality, lighting, acoustics, only current reliable method subjective evaluation. reduce need occupant feedback, personal models are currently being developed that aim to predict response based on information from its surroundings. These leverage machine learning tools have been found provide suitable estimations responses. According literature, an average prediction accuracy 70–80% attainable. Therefore, these promoted innovative efficient ways comfort-based HVAC control. The challenge however identifying most relevant indicators acquiring them in simple way. Integrating anthropometric data, e.g., age, sex, body mass index may represent generating model. Including physiological data skin temperature, heart rate, signal transformation could increase performance. Strong relationships were identified between indicators, their variation was not be governed solely by thermoregulation. Few automatic control implementation examples using shows challenges still exist. In order achieve accurate control, certain issues remain regarding acceptable thresholds model performance optimum set combination it.

Language: Английский

Citations

29

What is NExT? A new conceptual model for comfort, satisfaction, health, and well-being in buildings DOI
Sergio Altomonte, Seda Kaçel, Paulina Wegertseder

et al.

Building and Environment, Journal Year: 2024, Volume and Issue: 252, P. 111234 - 111234

Published: Jan. 24, 2024

Language: Английский

Citations

13

Reinforcement Learning for Control and Optimization of Real Buildings: Identifying and Addressing Implementation Hurdles DOI Creative Commons
Lotta Kannari, Nina Wessberg,

Sara Hirvonen

et al.

Journal of Building Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 112283 - 112283

Published: March 1, 2025

Language: Английский

Citations

2

Personal comfort models based on a 6‐month experiment using environmental parameters and data from wearables DOI Open Access
Federico Tartarini, Stefano Schiavon, Matías Quintana

et al.

Indoor Air, Journal Year: 2022, Volume and Issue: 32(11)

Published: Nov. 1, 2022

Personal thermal comfort models are a paradigm shift in predicting how building occupants perceive their environment. Previous work has critical limitations related to the length of data collected and diversity spaces. This paper outlines longitudinal field study comprising 20 participants who answered Right-Here-Right-Now surveys using smartwatch for 180 days. We more than 1080 field-based per participant. Surveys were matched with environmental physiological measured variables indoors homes offices. then trained tested seven machine learning participant predict preferences. Participants indicated 58% time want no change environment despite completing 75% these at temperatures higher 26.6°C. All but one personal model had median prediction accuracy 0.78 (F1-score). Skin, indoor, near body temperatures, heart rate most valuable accurate prediction. found that ≈250–300 points needed We, however, identified strategies significantly reduce this number. Our provides quantitative evidence on improve models, prove benefits wearable devices preference, validate results from previous studies.

Language: Английский

Citations

37

Cozie Apple: An iOS mobile and smartwatch application for environmental quality satisfaction and physiological data collection DOI Open Access
Federico Tartarini, Mario Frei, Stefano Schiavon

et al.

Journal of Physics Conference Series, Journal Year: 2023, Volume and Issue: 2600(14), P. 142003 - 142003

Published: Nov. 1, 2023

Abstract Collecting feedback from people in indoor and outdoor environments is traditionally challenging complex to achieve a reliable, longitudinal, non-intrusive way. This paper introduces Cozie Apple, an open-source mobile smartwatch application for iOS devices. platform allows complete watch-based micro-survey provide real-time about environmental conditions via their Apple Watch. It leverages the inbuilt sensors of collect physiological (e.g., heart rate, activity) (sound level) data. outlines data collected 48 research participants who used report perceptions urban-scale comfort (noise thermal) contextual factors such as they were with what activity doing. The results 2,400 micro-surveys across various urban settings are illustrated this paper, showing variability noise-related distractions, thermal comfort, associated context. show that experienced at least little noise distraction 58% time, talking being most common reason (46%). effort novel due its focus on spatial temporal scalability collection noise, distraction, information. These set stage larger deployments, deeper analysis, more helpful prediction models toward better understanding occupants’ needs perceptions. innovations could result control signals building systems or nudges change behavior.

Language: Английский

Citations

23

Human-Centric Artificial Intelligence of Things–Based Indoor Environment Quality Modeling Framework for Supporting Student Well-Being in Educational Facilities DOI
Min Jae Lee, Ruichuan Zhang

Journal of Computing in Civil Engineering, Journal Year: 2024, Volume and Issue: 38(2)

Published: Jan. 3, 2024

Maintaining the quality of indoor environments in educational facilities is crucial for student comfort, health, well-being, and students' learning performance. Current environment maintenance practices building systems facility spaces often fail to include feedback from students exhibit limited adaptability their needs. To address this problem, paper introduces a novel artificial intelligence things (AIoT)-based framework predict multidimensional (IEQ) conditions. The proposed integrates internet (IoT) with deep algorithms systematically incorporate IEQ data multimodal occupants. By collecting, fusing, analyzing real-time occupant data, predicts future condition based on current This yields insights into conditions potential impacts thereby facilitating development climate-adaptive, data-driven, human-centric facilities. was deployed, validated, tested selected at Virginia Tech Blacksburg campus, encouraging results.

Language: Английский

Citations

6

Occupant-centric control in buildings: Investigating occupant intentions and preferences for indoor environment and grid flexibility interactions DOI
Arlinda Bresa, Tea Žakula, Dean Ajduković

et al.

Energy and Buildings, Journal Year: 2024, Volume and Issue: 317, P. 114393 - 114393

Published: June 7, 2024

Language: Английский

Citations

5

Meta-learning of personalized thermal comfort model and fast identification of the best personalized thermal environmental conditions DOI Creative Commons
Liangliang Chen, Ayca Ermis, Fei Meng

et al.

Building and Environment, Journal Year: 2023, Volume and Issue: 235, P. 110201 - 110201

Published: March 20, 2023

Language: Английский

Citations

10