- International Journal of Thermodynamics
- Vol: 13 Issue: 3
- Exergy Analysis of Human Respiration Under Physical Activity
Exergy Analysis of Human Respiration Under Physical Activity
Authors : Cyro ALBUQUERQUE NETO, Luiz Felipe PELLEGRİNİ, Maurício FERREİRA, Silvio DE OLİVEİRA JR, Jurandir YANAGİHARA
Pages : 105-109
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Publication Date : 2010-02-23
Article Type : Other
Abstract :This paper presents an exergy analysis of the human body under physical activity. A model of the respiratory system and a model of the thermal system were used for this purpose. These models consider heat and mass transfers in lungs, tissues and blood. Each component of these models is represented by a uniform compartment governed by equations for diffusion, convection, O 2 consumption, CO 2 /heat generation and heat and mass transfer with the environment. The models allow the calculation of the exergy destruction in the lung and tissues, and the contribution of each entropy generation mechanism in the total generation. Furthermore, a discussion is proposed regarding the efficiency of the human body under physical exercise.Keywords : Thermoregulation, respiration physiology, bio-tr’ansport, exergy analysis.