Stress & Comfort

1. Stress & Comfort Stress disturbs airconditioning Tamara Derksen BSc MSc student Building Physics 31 May 2006

2. Comfort & Stress Introduction Methodology Results Conclusions Thermal comfort definition: ‘a condition of mind which expresses satisfaction with the thermal environment’, not a physical measurement Stress definition:an imbalance between the perceived demands of the environment and the perceived resources to cope with those demands • Source: • Thermal comfort. Analysis and applications in environmental engineering. P.O.Fanger, 1970 • European Agency of Safety and Health at Work, 2005 http://agency.osha.eu.int/tmp/publications/conference/magazine/5/index_3.htm 2/10

3. Stress to Comfort? Research question Introduction Methodology Results Conclusions How does stress influence satisfaction with thermal comfort? Current thermal comfort model includes: (iii) air temperature, (iv) mean radiant temperature, (ii) activity level,(i) clothing insulation,(v) relative humidity, (vi) air velocity 3/10

4. Additional model of Maslow (1943) Introduction Methodology Results Conclusions Source: Gerontechnology 5.2 blz 65-67, J.E.M.H.Bronswijk , 2006 4/10

5. Stress & Comfort measured Introduction Methodology Results Conclusions • Research Objects:3 office in Eindhoven (n=46) • Measurements: • Physical: Air temperature [oC]; Mean radiant temperature [oC]; Relative humidity [%]; Air velocity [m/s]; CO2 concentration [ppm]; Airborne particles (≥0.3 μm and ≥1.0 μm) [counts/min] • Questionnaires: the office environment survey (HOPE) [Building Research Establishment Ltd, 2002]; extended cognitive failure questionnaire [Broadbent, et al 1982]; effort reward imbalance questionnaire[Siegris, Peter 1996]; chronic stressors [Cairney, et al 2003]; recent life events [Cairney, et al 2003] • Data analyses: Statistics, Multi variant analyses 5/10

6. Thermal environment Introduction Methodology Results Conclusions 6/10

7. Satisfaction results Introduction Methodology Results Conclusions 7/10

8. Perceived & Satisfaction Introduction Methodology Results Conclusions Correlations 8/10

9. Stress & Comfort revisited Introduction Methodology Results Conclusions • Dissatisfaction with the thermal environment is made up of: • the thermal environment, • deficiency needs on the social level, and • individual characteristics (age, gender, function) 9/10

10. Stress & Comfort Introduction Methodology Results Conclusions ? 10/10