Skip to main content

Influence of Measurement Uncertainties on the Thermal Environment Assessment

Abstract

ISO 7726 standard describes both the measurement techniques and the related metrological performances of instruments required for the assessment of the thermal environment. Unfortunately, the calculation of required discomfort and stress indices rarely takes into account the evaluation of single measurement uncertainties and their effect on the thermal environment assessment. To assess the uncertainty in the determination of predicted mean vote and the predicted percentage of dissatisfied indices, required by ISO 7730 for the verification of the environment conformity, typical uncertainties in the measurement of both physical (the air temperature, the mean radiant temperature, the air velocity, and the relative humidity) and subjective parameters are calculated. In order to verify the conformance of comfort indices measured by means of different measurement techniques and devices, some experimental tests in three typical environments have been carried out: (i) residential, (ii) office, and (iii) industrial. To highlight both the compatibility of measurement and the suitability, tests were carried out using three special comfort-analysis data-loggers, each provided with different sensors characterized by different instrumental uncertainties.

This is a preview of subscription content, access via your institution.

References

  1. ISO 7726:2002, Ergonomics of the Thermal Environment—Instruments for Measuring Physical Quantities (International Standardization Organization, Geneva, 2002)

  2. ISO 7730:2006, Ergonomics of the Thermal Environment—Analytical Determination and Interpretation of Thermal Comfort Using Calculation of the PMV and PPD Indices and Local Thermal Comfort Criteria (International Standardization Organization, Geneva, 2006)

  3. ISO 15265:2004, Ergonomics of the Thermal Environment—Risk Assessment Strategy for the Prevention of Stress or Discomfort in Thermal Working Conditions (International Standardization Organization, Geneva, 2004)

  4. BSR/ASHRAE Standard 55, Thermal Environmental Conditions for Human Occupancy (American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc., Atlanta, 2003)

  5. ISO/IEC Guide 98:2008, Uncertainty of Measurement—Part 3: Guide to the Expression of Uncertainty in Measurement (International Standardization Organization, Geneva, 2008)

  6. UNI CEI ENV 13005:2000, Guide to Expression of Uncertainty in Measurements (UNI, Milan, 2000)

  7. F.R. Alfano d’Ambrosio, E. Ianniello, B.I. Palella, G. Riccio, A Sensitivity Analysis of the PMV index to its Independent Variables, in Proceedings of the Climamed 2006—Congrès Méditerranéen des climaticien (Lyon, France, 2006), pp. 20–21

  8. Arens E., Humphreys M.A., de Dear R., Zhang H.: Build. Environ. 45, 4 (2010)

    Google Scholar 

  9. Alfano d’Ambrosio F.R., Palella B.I., Riccio G.: Build. Environ. 46, 1361 (2011). doi:10.1016/j.buildenv.2011.01.001

    Article  Google Scholar 

  10. CEI EN 60751:2009, Termometri industriali a resistenza di platino e sensori di temperatura in platino (Comitato Elettrotecnico Italiano, Milano, 2009)

  11. F.R.A. d’Ambrosio, M. Dell’Isola, B. Palella, G. Riccio, A. Russi, La misura della temperatura media radiante, in 61° Congresso Nazionale ATI (Perugia, Italy, 2006)

  12. Dominik M., Philipona R., Ruckstuhl C., Vogt R., Vuilleumier L.: J. Atmos. Ocean. Tech. 25, 442 (2008)

    Article  Google Scholar 

  13. Hudoklin D., Drnovšek J.: Int. J. Thermophys. 29, 1652 (2008)

    ADS  Article  Google Scholar 

  14. Wang L., Tang K.H.: Int. J. Thermophys. 29, 1709 (2008)

    ADS  Article  Google Scholar 

  15. UNI EN ISO 14253-1, Geometrical Product Specifications (GPS)—Inspection by Measurement of Workpieces and Measuring Equipment—Decision Rules for Proving Conformance or Non Conformance with Specifications (UNI, Milano, 2001)

  16. Begeš G., Drnovšek J., Pušnik I., Bojkovski J.: Meas. Sci. Technol. 13, 565 (2002)

    ADS  Article  Google Scholar 

  17. Geršak G., Bojkovski J., Batagelj V., Hudoklin D., Begeš G., Pušnik I., Drnovšek J.: J. Test. Eval. 36, 1 (2008)

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to A. Frattolillo.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Dell’Isola, M., Frattolillo, A., Palella, B.I. et al. Influence of Measurement Uncertainties on the Thermal Environment Assessment. Int J Thermophys 33, 1616–1632 (2012). https://doi.org/10.1007/s10765-012-1228-7

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10765-012-1228-7

Keywords

  • Accuracy
  • Comfort indices
  • ISO 7726
  • PMV