ENERGY EFFICIENCY OPTIMIZATION IN AIR-CONDITIONED BUILDINGS THROUGH SUMMER ELUSIVE CLIMATE: CASE STUDY OF PUBLIC ZONES

摘要

Human thermal comfort is affected by several thermal and non-thermal variables, such as temperatures, humidity, local air speed, health, age, activity, clothing, sex, food, location, season, etc. and acclimatization for any particular person. This paper is a part of long-term, (3-years) field case-study investigations to establish compatible tropical comfort chart suitable and appropriately applicable to Egyptian Citizens from different governorates. Such investigations were based on the same concepts and methodologies used and applied to establish the well known ASHRAE comfort chart, but all statistical data were directed to field studies not laboratory tests. Paper dealt with only men over 45-years old with the same metabolic rated at summer season that are dressed with clothing that ranges from 0.5 Clo. To 0.65 clo, weighted from 70-to-90 kg and subjected to air conditions treated for long periods (over two hours) inside public buildings in Cairo and Alexandria. Most of citizens after being subjected to treated air become acclimated to the indoor conditions in their original environment; they are moved into another pre-adjusted zone such as theater waiting lobbies, lecture hall salons, patient or laboratory rooms, conference dining halls or offices. All of them had immediately expressed their vote and reactions to the new indoor climatic conditions, warm, cool, fair, and same. The questionnaire vote level was based on minimum of 10 persons covering each Egyptian govern orates. Great mass of data were collected and stored out to apply the related Operative Temperature (O.T) on the psychrometric chart. One of the main conclusions is that the analysis of obtained results can greatly enhance our understanding and explain the causes of many upnormal human characteristics due to the human stress mode. This would strongly recommend the inclusion of human stress modes to the human comfort variables.