Comparative analysis of methods for determining the metabolic rate in order to provide a balance between man and the environment

Broday, Evandro Eduardo; Xavier, Antônio Augusto de Paula; Oliveira, Reginaldo de

doi:10.1016/j.ergon.2014.05.006

Cited by 16 publications

(4 citation statements)

References 13 publications

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“…The findings differ from the values provided in ISO 8996 (2004). By using the new metabolic rates the actual thermal sensation correlated better with PMV [341].…”

Section: Thermal Comfort In Other Indoor Environmentsmentioning

confidence: 91%

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A review of human thermal comfort in the built environment

Rupp

Vásquez

Lamberts

2015

Energy and Buildings

695

282

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“…The findings differ from the values provided in ISO 8996 (2004). By using the new metabolic rates the actual thermal sensation correlated better with PMV [341].…”

Section: Thermal Comfort In Other Indoor Environmentsmentioning

confidence: 91%

“…By using a metabolic analyzer in workplaces in a industrial company Broday et al [341] set new values for the metabolic rate through calculations and measurements. The findings differ from the values provided in ISO 8996 (2004).…”

Section: Thermal Comfort In Other Indoor Environmentsmentioning

confidence: 99%

A review of human thermal comfort in the built environment

Rupp

Vásquez

Lamberts

2015

Energy and Buildings

695

282

View full text Add to dashboard Cite

“…The index is used both for evaluation in existing buildings and in building simulations for the prediction of thermal comfort levels [34]. The lack of clear information in technical Standards and wrong interpretations of the standards [29,[35][36][37] result in increased inaccuracy in its calculation. This also applies to microclimatic dataloggers provided with built-in software.…”

Section: Aim Of the Papermentioning

confidence: 99%

Fifty Years of PMV Model: Reliability, Implementation and Design of Software for Its Calculation

Alfano

Olesen²,

Palella

et al. 2019

Atmosphere

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In most countries, PMV is the reference index for the assessment of thermal comfort conditions in mechanically conditioned environments. It is also the basis to settle input values of the operative temperature for heating and cooling load calculations, sizing of equipment, and energy calculations according to EN 16798-1 and 16798-2 Standards. Over the years, great effort has been spent to study the reliability of PMV, whereas few investigations were addressed to its calculation. To study this issue, the most significant apps devoted to its calculation have been compared with a reference software compliant with EN ISO 7730 and the well-known ASHRAE Thermal Comfort Tool. It has been revealed that only few apps consider all six variables responsible for the thermal comfort. Relative air velocity is not considered by ASHRAE Thermal Comfort Tool and, finally, the correction of basic insulation values due to body movements introduced by EN ISO 7730 and EN ISO 9920 Standards has only been considered in one case. This implies that most software and apps for the calculation of PMV index should be used with special care, especially by unexperienced users. This applies to both research and application fields.Atmosphere 2020, 11, 49 2 of 14 buildings addressing IEQ, whereas EN 16798-2 explains how to use EN 16798-1 by specifying additional information as: (i) input parameters for building system design and energy performance calculations; (ii) methods for long term evaluation of the indoor environment; (iii) criteria for measurements which can be used if required to measure compliance by inspection; (iv) parameters to be used by monitoring and displaying the indoor environment in existing buildings. With reference to thermal comfort, EN 16798-1 suggests specific design ranges of operative temperature consistent with the desired level of environmental quality (see Table 1). Table 1. Temperature ranges for hourly calculation of cooling and heating energy for some indoor environment (Category II) according to EN 16798-1 and EN 16798-2 Standards [11,12]. Resultant insulation values I cl,r to be used [6] are 0.5 clo (cooling) and 1.0 clo (heating). Type of Building SpaceOperative Temperature Range for Heating ( • C) Operative Temperature Range for Cooling ( • C) Offices and spaces with similar activity (single offices, open plan offices, conference rooms, auditorium, cafeteria, restaurants, and classrooms). Sedentary activity: M = 1.2 met 20.0-24.0 23.0-26.0 Department store Standing-walking activity: M = 1.6 met 16.0-22.0 21.0-25.0

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“…The high sensitivity of PMV to the metabolic rate has been demonstrated that changing the metabolic rate by ±10% resulted in a variation in PMV from -0.16 scale to 0.14 scale [18]. It has been experimentally confirmed that an accurate input of the metabolic rate can efficiently improve the PMV for the thermal sensation prediction [12,13,19,21].…”

Section: Introductionmentioning

confidence: 99%

Improving predicted mean vote with inversely determined metabolic rate

Zhang

Cheng

Oladokun

et al. 2020

Sustainable Cities and Society

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Comparative analysis of methods for determining the metabolic rate in order to provide a balance between man and the environment

Cited by 16 publications

References 13 publications

A review of human thermal comfort in the built environment

A review of human thermal comfort in the built environment

Fifty Years of PMV Model: Reliability, Implementation and Design of Software for Its Calculation

Improving predicted mean vote with inversely determined metabolic rate

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