Evaluation and improvement of the thermoregulatory system for the two-node bioheat model

Ji, Lili; Laouadi, Abdelaziz; Wang, Liangzhu; Lacasse, Michael A.

doi:10.1016/j.enbuild.2021.111235

Cited by 22 publications

(3 citation statements)

References 29 publications

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“…Our previous work on overheating in residential buildings found that the severity and duration attributes correlate well with the cumulative body dehydration level, and the intensity attribute correlates well with the maximum body core temperature [60]. Body dehydration and core temperature are calculated using the two-node physiological model for young adults of Ji et al [78].…”

Section: Overheating Limit Criteriamentioning

confidence: 99%

The Development of Health-Based Overheating Limit Criteria for School Buildings

Laouadi,

Ji,

Jandaghian

et al. 2024

Buildings

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Overheating in school buildings can negatively affect the cognitive learning performance of particularly young students whose thermoregulation systems are still developing. However, currently, in schools, issues related to overheating have been addressed by limiting the exposure time to thermal discomfort. In this paper, the development of a general procedure that combines building and bioheat simulations to evaluate overheating risk in schools and generate health-based overheating limit criteria that may be applied in Canadian schools is described. General school building models, having either old or new constructions, were created based on a primary school building and successfully calibrated using field measurements of indoor temperature and humidity and published building energy use intensity data. Three sets of two limit criteria (exposure duration and severity of overheating) that account for the personal exposure conditions of students in primary, middle, and secondary schools were developed by limiting the body dehydration of students during extreme overheating events. Comparing the proposed limit criteria with the hour of exceedance criterion revealed interesting relationships between them, suggesting the proposed limit criteria as a benchmark for the comfort-based criteria, particularly for the more vulnerable primary and middle schools. The proposed procedure with the obtained overheating limit criteria is intended to be applied in any field or simulation study to assess the risk of overheating in similar school buildings under any local prevailing climate.

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Section: Overheating Limit Criteriamentioning

confidence: 99%

The Development of Health-Based Overheating Limit Criteria for School Buildings

Laouadi,

Ji,

Jandaghian

et al. 2024

Buildings

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“…Ji. L. et al explored and validated the accuracy of a variety of thermal models and provided some recommendations for overheating buildings [42,43]. These works have contributed to the development of thermal comfort research.…”

Section: Literature Reviewmentioning

confidence: 99%

Field Investigation on Adaptive Thermal Comfort in Rural Dwellings: A Case Study in Linyi (China) during Summer

Tang,

Gao,

Tan

et al. 2024

Buildings

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A large number of people in China still live in rural villages. The indoor environment of these rural dwellings directly affects the quality of life of the occupants. Nevertheless, constrained by the quality of dwelling construction, rural buildings have poorer indoor environments and, at the same time, have a higher operating energy consumption. However, inadequate attention has been given to the summer thermal environment in cold regions. This work has been carried out around the thermal environment of rural residences in cold regions during summer. Field measurements, questionnaires, and data analysis were used in this study. We recorded the indoor and outdoor thermal environment parameters on a typical summer day in the Linyi rural area. Moreover, the subjective sensations and thermal adaptive behaviors of the participants were recorded in detail with a questionnaire. Linear regression showed that the neutral temperature for residents in summer was 27.52 °C, with acceptable temperatures ranging from 25.14 °C to 29.9 °C. Age and gender differences were found to affect the occupants’ sensation of thermal comfort and humidity, as well as their thermal adaptive behavior. In addition, a thermal adaptive model has been constructed in the study, which will further enrich the thermal adaptive investigation and provide a scientifically sound reference for the renovation and development of the local rural areas.

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“…It has been included in ASHRAE Standard 55, both as an index of thermal comfort and for heat stress assessment in temperate regions. L. Ji et al [26] proposed a new procedure for comparison between thermoregulatory models, using the root mean square error (RMSE) method to verify the accuracy of model combinations and to optimize the model constants. L. Ji et al [27] investigated the elderly's reduced thermoregulatory activity and delay in generating thermoregulatory signals.…”

Section: Theoretical Indices Based On the Body Heat Balance Equationmentioning

confidence: 99%

A review of heat stress evaluation indices in extremely hot environments

et al. 2022

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Selecting appropriate evaluation indices to evaluate extremely hot environments has become an urgent problem to ensure the safety of workers’ lives and improve labor productivity. The objective of this review is to compare relevant evaluation indices for assessing heat stress and to analyze the more effective ones applicable to the industrial environment by considering each one together. Based on extensive research on existing literature and relevant international standards, this paper introduces the definitions of heat stress and its influencing factors. Based on the actual needs of workers, analyze the existing heat stress indices from a practical standpoint, and summarize the definitions, advantages, and limitations of each index. As a result, this paper emphasizes that the relevant thresholds of thermal indices should be appropriately adjusted to suit different industrial environments. The hazards of extreme work environments can be reduced by developing new indices, charts, or related strategies. This review will provide a solid theoretical foundation for environmental control schemes for harsh working situations.

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Evaluation and improvement of the thermoregulatory system for the two-node bioheat model

Cited by 22 publications

References 29 publications

The Development of Health-Based Overheating Limit Criteria for School Buildings

The Development of Health-Based Overheating Limit Criteria for School Buildings

Field Investigation on Adaptive Thermal Comfort in Rural Dwellings: A Case Study in Linyi (China) during Summer

A review of heat stress evaluation indices in extremely hot environments

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