Human body exergy analysis and the assessment of thermal comfort conditions

Mady, Carlos Eduardo Keutenedjian; Ferreira, Maurício Silva; Yanagihara, Jurandir Itizo; Oliveira, Silvio de

doi:10.1016/j.ijheatmasstransfer.2014.05.039

Cited by 44 publications

(36 citation statements)

References 26 publications

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“…Recently, a new approach using exergy analysis instead of energy analysis (commonly used by thermal comfort prediction methods) was proposed, showing interesting results [417][418][419][420][421][422][423][424]. A review about the exergy balance equation can be found at [425].…”

Section: Page 38 Of 75mentioning

confidence: 99%

A review of human thermal comfort in the built environment

Rupp

Vásquez

Lamberts

2015

Energy and Buildings

662

282

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Section: Page 38 Of 75mentioning

confidence: 99%

A review of human thermal comfort in the built environment

Rupp

Vásquez

Lamberts

2015

Energy and Buildings

662

282

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“…Over time, new applications emerged, in order to evaluate thermal comfort conditions [14][15][16][17][18][19][20][21][22][23]. These analyses related the destroyed exergy and exergy transfer to the environment with the predicted mean vote.…”

Section: Introductionmentioning

confidence: 99%

“…It is important to highlight that the application of energy and exergy analysis to the human body in different conditions was already validated and extensively used in the literature by different authors [5,[11][12][13][14][15][16][17][18][19][20][21][22][23]25,26,[29][30][31][32][33]36]. The distinguishing feature of this article is the application to actual experimental results as in [5] for sports purposes and with the actual performed power known as an input variable.…”

Section: Introductionmentioning

confidence: 99%

Exergy Analysis of the Musculoskeletal System Efficiency during Aerobic and Anaerobic Activities

Spanghero

Neto

Fernandes

et al. 2018

Entropy

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Abstract:The first and second laws of thermodynamics were applied to the human body in order to evaluate the quality of the energy conversion during muscle activity. Such an implementation represents an important issue in the exergy analysis of the body, because there is a difficulty in the literature in evaluating the performed power in some activities. Hence, to have the performed work as an input in the exergy model, two types of exercises were evaluated: weight lifting and aerobic exercise on a stationary bicycle. To this aim, we performed a study of the aerobic and anaerobic reactions in the muscle cells, aiming at predicting the metabolic efficiency and muscle efficiency during exercises. Physiological data such as oxygen consumption, carbon dioxide production, skin and internal temperatures and performed power were measured. Results indicated that the exergy efficiency was around 4% in the weight lifting, whereas it could reach values as high as 30% for aerobic exercises. It has been shown that the stationary bicycle is a more adequate test for first correlations between exergy and performance indices.

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“…[23,36] is about the difference between the metabolism on an energy basis and the heat released to the body, Q M ¼ M À W, associated with the metabolism. It is important to discuss that these are two different physical quantities, and when they are evaluated on an exergy basis they differ in one order of magnitude [12,36].…”

Section: Evaluation Of the Cellular Metabolismmentioning

confidence: 99%

“…It was obtained by Ref. [23] that, for high operative air temperatures and high relative humidities, the body begin to enter in a hyperthermia state.…”

Section: Introductionmentioning

confidence: 99%