Summarises a study that found a clear impact of activity and overall thermal sensation on human sensitivity to air movement, while no interaction effects of exposure to several local thermal discomfort factors were observed. States that current standards tend to consider only sedentary light activity and a neutral thermal sensation.

Presents a series of laboratory studies into thermal comfort requirements. Groups of 16 persons were used in two studies, to look at the effects of gender over three-hour exposures in simulated living room and office environments. Only small differences were found in the thermal comfort response of male and female subjects in identical clothing conditions, for neutral and slightly warm environments. In cool conditions, females felt the cold more than males. Behavioural studies were conducted for persons maintaining thermal comfort by adjusting their clothing. A temperature of 18 deg.

Discusses, in the context of the Predicted Mean Vote (PMV) model, the representation and measurement of clothing parameters and metabolic rate. Identifies several problems and provides solutions to a few. Results showed the importance of the effects of body motion and air movement for clothing insulation, and suggests they should be incorporated into the model. The results also showed only small effect on dry heat exchange for stationary light work at low air movement. Suggests that algorithms for convective heat exchange in prediction models should be reconsidered.

Describes the current design standard BS EN ISO7730 - 'Moderate thermal environments - determination of the PMV and PPD indices and specification of the conditions for thermal comfort'. States that it is based on Fanger's work and comprises a steady-state human heat balance model that leads to a prediction of the sensation of human thermal comfort for a given set of thermal conditions. Questions the applicability of this standard when confronted with the more complex environment of a chilled ceiling operated in combination with displacement ventilation.

Explains the origin and development of the adaptive approach to thermal comfort. Considers several recent developments in the application of the theory and the origin of the differences between adaptive thermal comfort and the 'rational' indices. Explores its application to comfort standards and makes recommendations about the best comfort temperature, the range of comfortable environments and the maximum rate of change of indoor temperature. Also mentions the application of criteria of sustainability to thermal standards for buildings.

A new adaptive comfort standard is included in recently accepted revisions to ASHRAE Standard 55 - 'thermal environmental conditions for human occupancy'. The new standard allows warmer indoor temperatures for naturally ventilated buildings during summer and in warmer climate zones. The paper summarises the research carried out to formulate this new standard, presents some of the findings for naturally ventilated buildings, and discusses the standardization process. Suggests ways to use the ACS for the design, operation and evaluation of buildings and for research.

Describes existing ISO standards and current projects concerning thermal comfort. Describes the production process for ISO standards. Considers the existing EN ISO 7730 thermal comfort standard in these terms and also ISO 8996 (metabolic rate0 and ISO 9920 (clothing). Also presents the work of ISO/TC 159 SC5, 'ergonomics of the physical environment'. Gives a detailed presentation of the proposed revision of EN ISO 7730. This will be based on requirements for general thermal comfort, operative temperature and local thermal discomfort.

States that the PMV model is in good agreement with high-quality field studies in buildings with HVAC systems, located in cold temperate and warm climates, which were studied in both summer and winter. Occupants may sense the warmth in non-air conditioned buildings in warm climates as being less severe than the PMV prediction, probably because of low expectations or because too high an estimate of metabolic rate. Introduces an extension to the model which includes an expectancy factor to be used in non-air conditioned buildings in warm climates.

Brief article introducing issues in the topic of thermal comfort standards and outlining papers from a recent conference on the subject held at Windsor, UK.

The subject of this study is the design of cooled ceiling and displacement ventilation systems in buildings. States that good design of CC/DV systems can lead to better indoor air quality and thermal comfort in comparison to widely used VAV mixing systems. A key design parameter is the cooling load removed by the displacement ventilation. Due to a small vertical temperature gradient, a low DV has a positive effect on thermal comfort, but also has a negative effect on indoor air quality because of the increased mixing of room air.