A novel method for calculation of the CO2 concentration impact on correlation between thermal comfort and human body exergy consumption
Abstract
The majority of studies dealing with the correlation between human body exergy consumption and thermal comfort use adopted, constant values of metabolic rate for appropriate activity level. Taking into account correlations between metabolic rate and the occupant’s exhaled CO2 volumetric flow rate, this study proposes a novel method for the calculation of metabolic rate using measured CO2 concentration in the indoor air. Using measured values of the air and radiant temperature, relative humidity and air velocity, and calculated values of metabolic rate, the human body exergy consumption rate and corresponding Predicted Mean Vote (PMV) are calculated. Moreover, a novel polynomial relation between them is proposed. Results show that metabolic rate values vary in the range of 0.97 to 1.54 met which leads to significantly wider range of PMV and human body exergy consumption rate comparing to the assumed value of 1.2 met for sedentary school activity. According to the obtained relation, the ...minimal value of the human body exergy consumption rate occurs for PMV = − 0.02. Results of this study imply that treating CO2 concentration as variable does have an impact on the thermal comfort assessment, providing enhanced correlations between thermal comfort and human body exergy consumption rate.
Keywords:
Thermal comfort / Human body exergy consumption / CO2 concentration impact / Metabolic rate / BuildingsSource:
Energy and Buildings, Elsevier, 2023, 294, 113234-Publisher:
- Elsevier
Funding / projects:
- Intelligent Control Systems of the Air-conditioning for the Purpose of Achieving Energy Efficient Exploitation Regimes in the Complex Operating Conditions (RS-MESTD-Technological Development (TD or TR)-33047)
- Research on use of solar energy by vacuum collectors with heat pipes and construction of a demonstration facility (RS-MESTD-Technological Development (TD or TR)-33048)
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Institution/Community
Mašinski fakultetTY - JOUR AU - Bajc, Tamara AU - Kerčov, Anton AU - Gojak, Milan AU - Todorović, Maja AU - Nikolina, Pivac AU - Sandro, Nižetić PY - 2023 UR - https://machinery.mas.bg.ac.rs/handle/123456789/6915 AB - The majority of studies dealing with the correlation between human body exergy consumption and thermal comfort use adopted, constant values of metabolic rate for appropriate activity level. Taking into account correlations between metabolic rate and the occupant’s exhaled CO2 volumetric flow rate, this study proposes a novel method for the calculation of metabolic rate using measured CO2 concentration in the indoor air. Using measured values of the air and radiant temperature, relative humidity and air velocity, and calculated values of metabolic rate, the human body exergy consumption rate and corresponding Predicted Mean Vote (PMV) are calculated. Moreover, a novel polynomial relation between them is proposed. Results show that metabolic rate values vary in the range of 0.97 to 1.54 met which leads to significantly wider range of PMV and human body exergy consumption rate comparing to the assumed value of 1.2 met for sedentary school activity. According to the obtained relation, the minimal value of the human body exergy consumption rate occurs for PMV = − 0.02. Results of this study imply that treating CO2 concentration as variable does have an impact on the thermal comfort assessment, providing enhanced correlations between thermal comfort and human body exergy consumption rate. PB - Elsevier T2 - Energy and Buildings, Elsevier T1 - A novel method for calculation of the CO2 concentration impact on correlation between thermal comfort and human body exergy consumption SP - 113234 VL - 294 DO - 10.1016/j.enbuild.2023.113234 ER -
@article{ author = "Bajc, Tamara and Kerčov, Anton and Gojak, Milan and Todorović, Maja and Nikolina, Pivac and Sandro, Nižetić", year = "2023", abstract = "The majority of studies dealing with the correlation between human body exergy consumption and thermal comfort use adopted, constant values of metabolic rate for appropriate activity level. Taking into account correlations between metabolic rate and the occupant’s exhaled CO2 volumetric flow rate, this study proposes a novel method for the calculation of metabolic rate using measured CO2 concentration in the indoor air. Using measured values of the air and radiant temperature, relative humidity and air velocity, and calculated values of metabolic rate, the human body exergy consumption rate and corresponding Predicted Mean Vote (PMV) are calculated. Moreover, a novel polynomial relation between them is proposed. Results show that metabolic rate values vary in the range of 0.97 to 1.54 met which leads to significantly wider range of PMV and human body exergy consumption rate comparing to the assumed value of 1.2 met for sedentary school activity. According to the obtained relation, the minimal value of the human body exergy consumption rate occurs for PMV = − 0.02. Results of this study imply that treating CO2 concentration as variable does have an impact on the thermal comfort assessment, providing enhanced correlations between thermal comfort and human body exergy consumption rate.", publisher = "Elsevier", journal = "Energy and Buildings, Elsevier", title = "A novel method for calculation of the CO2 concentration impact on correlation between thermal comfort and human body exergy consumption", pages = "113234", volume = "294", doi = "10.1016/j.enbuild.2023.113234" }
Bajc, T., Kerčov, A., Gojak, M., Todorović, M., Nikolina, P.,& Sandro, N.. (2023). A novel method for calculation of the CO2 concentration impact on correlation between thermal comfort and human body exergy consumption. in Energy and Buildings, Elsevier Elsevier., 294, 113234. https://doi.org/10.1016/j.enbuild.2023.113234
Bajc T, Kerčov A, Gojak M, Todorović M, Nikolina P, Sandro N. A novel method for calculation of the CO2 concentration impact on correlation between thermal comfort and human body exergy consumption. in Energy and Buildings, Elsevier. 2023;294:113234. doi:10.1016/j.enbuild.2023.113234 .
Bajc, Tamara, Kerčov, Anton, Gojak, Milan, Todorović, Maja, Nikolina, Pivac, Sandro, Nižetić, "A novel method for calculation of the CO2 concentration impact on correlation between thermal comfort and human body exergy consumption" in Energy and Buildings, Elsevier, 294 (2023):113234, https://doi.org/10.1016/j.enbuild.2023.113234 . .