ISO 7730 (1984) Annex E provides 'look-up' tables of the predicted mean vote at 50% relative humidity for a range of operative temperatures, mean air velocities, activity levels and clothing resistance values. The suitability of Annex E for speedy assessment of comfort conditions is discussed with the aid of examples. The dangers of its injudicious use are illustrated, particularly with reference to discrepancies between ISO 7730 and Fanger's comfort equations, and to the assignment of M (met) and CL (clo) values for given real-life situations.
References
1.
Fanger P.O.Thermal comfort -Analysis and applications in environmental engineering (McGraw-Hill) (1970)
2.
ISO 7730: Moderate thermal environments-Determination of the PMV and PPD indices and specification of the conditions for thermal comfort ( International Standards Organisation) (1984)
3.
CibseGuide Section A1: Environmental criteria for design (London: Chartered Institution of Building Services Engineers) (1986)
4.
Oseland N.A. and Humphreys M.A.Trends in thermal comfort BRE Report 266 (Garston : Building Research Establishment) ( 1994)
5.
Croome D.J., Gan G. and Awbi H.B.Field evaluation of the indoor environment of naturally ventilated offices Proc. 13th AIVC Conf. pp333-342 (1992)
6.
Ahmed Z.N., Howarth A.T. and Zunde J.M.Thermal comfort studies and applications forDhaka Building Serv. Eng. Res. Technol.11(3) 105-108( 1990)
7.
Thompson J.C.Qualifying heat BuildingCCLX (7874) 35 (6 Jan 1995)
8.
BRE expressesFanger fears Building Serv.: CIBSE J.16(12) 5 (Dec 1994)
9.
Francis J. and Edwards R.E.Emironmental assessment in B43, main building UMIST Internal report 02/036/UV
