This paper presents the findings of a short-term monitoring exercise and questionnaire surveyto assess the thermal comfort conditions actually being achieved in 6 Iranian Office buildings.The findings of the questionnaire and monitoring are compared to give confidence that thequestionnaire is accurately reflecting the calculated comfort conditions obtained from thephysically monitoring and site observations.
The impacts of indoor thermal environment on body physiology have been carried on for four years (2003-2007) in laboratory in Chongqing, a typical city located in hot-summer and cold-winter region in China. Experimental objectives used are healthy university students. The range of indoor air temperature in summer is 25 C - 37.5 C.The objectives physiological changes (Motor nerve Conduction Velocity, Sensory nerve Conduction Velocity, Skin Temperature etc.) under different temperatures and ventilations have been tested.
This article is part of a research in progress about comparative study methods for the Brazilian reality using among many other authors, Givoni (1969), Voght and Miller-Chagas (1970), Fanger-ISO(1970), ASHRAE (55-1992), Mahoney (1971), Humphreys (1978) and Olgyay (1962) methods. This research presents the principal concept to be evaluated by the Universal Fuzzy Controlled aiming to establish a reference to determine a possible interference of the acclimatization factor to determine thermal comfort.
This paper summarises the work of the LowEx co-operation /1/. The aim was to promote rational use ofenergy by encouraging the use of low temperature heating systems and high temperature cooling systems ofbuildings. These systems can use a variety of fuels and renewable energy sources. Energy is used efficientlywhile providing a comfortable indoor climate. Exergy defines the quality of energy and is a concept fordesigning and assessing different heating and cooling systems. Application of exergy analysis into buildingshas not been common before.
The objective of this paper is to analyse if Radiant Cooling Ceiling (RCC) has the potential to providebetter comfort and energy consumption in prefabricated buildings by comparison with conventionalsystems installed on this structures. Another purpose of this paper is to investigate the risk ofcondensation on the ceiling panel and finding the solution to prevent this. A building energy simulationcode called Trnsys was used to simulate the system and to analyse different characteristics of theRCC and of the indoor space.
Efficient ventilation of indoor environments shall guarantee not only a proper oxygen flow for human breathing, but also an effective removal of pollutants released by human metabolism and building materials. Usually, high ventilation rates are adopted to reach these two goals, with a consequent high energy consumption for buiding climatization.
The enhancement of the know-how of the thermal environment has leaded to the formulation of more rational methods for the evaluation of the thermal responses of people. Nevertheless the improvement in human body heat exchange modelling resulted in more complex algorithms making difficult an easy assessment of thermal environments, especially for the beginners. Moreover the assessment interpretation according to the regulations in force is not trivial.
Physiological and sensory responses, particularly paid attention to the skin wettedness under clothing at constant average skin temperature, were observed in two male subjects while they were seated on a balance. The clothing ensemble had an effective insulation of approximately 1 clo. From the analysis of the present experimental data, the following conclusions were found regarding characteristics of wettedness observed by clothed subjects at a constant average skin temperature, 1. Wettedness correlates negatively with the air temperature and correlates positively with the vapor pressure.
Researchers involved in studying problems concerning the built-up environment face an objective complexity, of easy instrumental evaluation, and a subjective complexity which is psycho-physiological concerning human beings with different individual reactions to the same exposure conditions.
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