نتایج جستجو برای: air conditioning

تعداد نتایج: 247241  

Journal: :IOP Conference Series: Earth and Environmental Science 2020

2013
Essam E. Khalil

Energy Efficiency and Indoor Air Quality in the healthcare applications and particularly in surgical operating theatres are important features in modernized designs. The various reasons for deviation from obtaining optimum IAQ and energy efficient buildings are listed. The air conditioning systems serving the operating rooms require careful design to minimize the concentration of airborne organ...

2005
Essam E. Khalil

The balance between thermal comfort and air quality in healthcare facilities to optimize the Indoor Air Quality (IAQ) is the main aim of this paper. The present paper will present this balance from the viewpoint of the air conditioning design. It was found that the design of the HVAC airside systems plays an important role for achieving the optimum air quality beside the optimum comfort level. ...

2013
B. B. Popović N. J. Gligorijević

Using the method of Fault Tree Analysis (FTA), in this paper, are analyzed the causes and modes of failure of air conditioners and automotive DC electro-ventilator, as part of automotive air conditioning system. Primarily, there was given a description of FTA method and of the importance of air conditioners and DC electro-ventilators in nowadays automotive industry. Secondly, based on a detaile...

Journal: :Occupational and environmental medicine 2011
Baltazar Nunes Eleonora Paixão Carlos Matias Dias Paulo Nogueira José Marinho Falcão

OBJECTIVES The objective of the study was to analyse the association between the presence of air conditioning in hospital wards and the intrahospital mortality during the 2003 heatwave, in mainland Portugal. METHODS Historical cohort study design including all patients aged 45 or more who were hospitalised in the 7 days before the heatwave. The outcome was survival during the 18 days the heat...

Journal: :American journal of epidemiology 2008
Michelle L Bell Francesca Dominici

Previous research provided evidence of an association between short-term exposure to ozone and mortality risk and of heterogeneity in the risk across communities. The authors investigated whether this heterogeneity can be explained by community-specific characteristics: race, income, education, urbanization, transportation use, particulate matter and ozone levels, number of ozone monitors, weat...

2014
Jennifer F. Bobb Roger D. Peng Michelle L. Bell Francesca Dominici

BACKGROUND In a changing climate, increasing temperatures are anticipated to have profound health impacts. These impacts could be mitigated if individuals and communities adapt to changing exposures; however, little is known about the extent to which the population may be adapting. OBJECTIVE We investigated the hypothesis that if adaptation is occurring, then heat-related mortality would be d...

2008
Michelle L. Bell Francesca Dominici

Previous research provided evidence of an association between short-term exposure to ozone and mortality risk and of heterogeneity in the risk across communities. The authors investigated whether this heterogeneity can be explained by community-specific characteristics: race, income, education, urbanization, transportation use, particulate matter and ozone levels, number of ozone monitors, weat...

2011
Y. Abe

665 In order to maintain a comfortable office environment periodical inspection of the air conditioning equipment is very important. It is necessary to measure the air temperature and the volume of the controlled outlet air correctly from the ceiling air diffuser. The periodical inspection of a large number of ceiling air diffusers must be done efficiently and in a short time. Up to now this ha...

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