This paper presents the results of a field experiment made on 30 female office workers : they were investigated on their perception of environmental conditions and the intensity of the Sick Building Symptoms if any, at 3 levels of temperature and humidity, and 2 levels of ventilation rate.
The conclusion is that working conditions improved when subjects worked at slightly lower levels of air temperature and humidity.
In this paper the methodological benefits and constraints of conventional climate chamber research in comparison to the field-based alternative are discussed. The discussion of methodology is extended to the discipline of environmental psychology and with a questionning on how engineers have come to dominate a research topic that falls so clearly within the scope of psychology.
In this paper the assessment of moderately cold environments with two different methods : the PMV method and the IREQ method. The applicability of the comfort criteria is analyzed too for a more general assessment of cold environments.
A new thermal comfort guideline for moderate environments has been developed: the ATG guideline. The underlying method distinguishes between ‘type Alpha’ versus ‘type Beta’ buildings to provide for different adaptation effects. Type Alpha indicates buildi
The objective of the current investigation was to evaluate the field performance of room air distribution in two rooms of a high-performance (low heating and cooling load) home. Thetwo rooms had similar exterior exposures but had different supply register locations (high sidewall and floor). The impact of normal equipment cycling on the room air distribution performance was also investigated. The performance was evaluated based on room air temperature measurements andthe requirements of ASHRAE Standard 55 (ASHRAE 1992).
Designing semi-outdoor environments such as atria or open-style cafes is a popular technique in modern architecture to provide occupants with natural outdoor elements in an artificialenvironment. Occupants are likely to expect a thermal environment differing from the indoors, and thermal adaptation is expected to play a major role in achieving comfort.Seasonal field surveys were conducted in four semi-outdoor environments for short-term occupancy with different levels of environmental control. Observations were made on occupancy conditions and clothing adjustments.
This paper presents the results of four thermal comfort surveys conducted in naturally ventilated and air-conditioned buildings located in Bari, in southern Italy, during winter and summer seasons. The buildings were of different types, including offices, lecture rooms, and library reading rooms. The
This analysis explores a discrepancy between neutral on the ASHRAE scale and prefer no change on a thermal preference scale. The data employed are from numerous field studies drawn from two large databases. Multivariate analysis showed that the ASHRAE scale vote depended not only on the recognized thermal variables but also on the outdoor temperature, while the thermal preference vote was relatively little influenced by outdoor temperature.
During a field campaign 13 classrooms at 4 different high-schools of the Provincia di Torino and 4 typical medium sized university classrooms of the Politecnico di Torino were monitored during winter and spring season to analyse the environmental quality. Measurements along with subjective surveys concerning indoor air quality, thermal, acoustical, and visual aspects were performed during class time.
The comparison of those results from the subjective and the objective approach is presented.
Standard 55-2004, on thermal Environmental Conditions for Human Occupancy was recently published and approved by ASHRAE and ANSI. This article gives an overview of the key features and limits of applicability of that standard.
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