An air-condition system shall be designed to provide the required indoor environment underspecified condition. According CEN Report 1752 it could be distinguish three categories forindoor environment. Considering higher level of comfort there is a rising cost of HVACsystems.
Active chilled beams are an air conditioning solution for ventilation, cooling and heating. Bycareful design the solution can result in a comfortable indoor environment with a high degreeof individual control at a low operational cost. During the design process draught risks shouldbe analyzed since many factors can influence the resulting airflow pattern from chilled beams.The paper focuses on the factors affecting the thermal comfort in a room ventilated by chilledbeams. Both experimental results as well as theoretical considerations are included in theanalysis.
Radiant panels achieved a growing success in the last years as a cooling system, because theyguarantee improvement in comfort and energy saving.The aim of the present work is to propose a method to evaluate the thermal behavior ofradiant panels used for summer cooling. Experimental observations lead to notice that part ofthe radiant load hitting panels surface is directly removed by the refrigerating fluid (DirectWater Load), never becoming a room load.
Full-scale laboratory measurements were conducted to determine moisture convectionperformance on the joint of external wall and attic floor. According to field measurements inprevious studies this joint is one of the most typical air leakage paths. On this joint also thehighest air pressure difference forms in winter. Two commonly used external walls: timberframeand autoclaved aerated concrete walls were measured. The attic floor was in both casesa timber-frame structure.
In our previous research[1], office workers are relatively frequent in self-reported symptomsof MCS/IEI compare to construction worker who highly exposed to VOCs compounds.However in that research, the subjects were too small to say it clearly. Based on that researchresults, self reported symptom surveys to 110 office workers and personal exposureconcentration measurement were conducted to 13 of people. VOCs exposure levels weremeasured within office, house and other places for a week by Passive Sampling Method.
In buildings, favorable growing conditions for mold fungi can occur and cause fungusinfestation. The danger for the occupants of dwellings lies in the spreading of pathogensthrough microorganisms. Mold fungi can occur not only on the surface of external walls, butalso inside construction parts. A prerequisite for preventing mold fungus is the knowledge ofthe transient building physical boundary conditions under which fungus growth takes place.The decisive parameters of influence like temperature, humidity and substrate have to beavailable over a certain period of time simultaneously.
This paper studies the extent of mould problems in a high-rise apartment complex with sixbuildings located in suburban of Seoul, Korea. The complex is composed of 466 householdswith different stories in buildings. The apartment buildings have occupants complaints due tomould growth on interior surfaces right after the completion.
The real estate market is changing rapidly and with it the evaluation of buildings.Requirements are being changed in order to meet market demand. Besides the location,infrastructure and the actual condition of a building's technical equipment a further parametercalled the Soft Factor is required in the evaluation of a buildings quality. High endequipped spaces, according to statistics, are more easily let and are therefore the key assets inhigher cash flow portfolios. A factor that can significantly decrease the value of a building islow air quality.
Measurements of SO2, NO2, and Suspended Particulate Matter (SPM) of indoor air andcorrelation with outdoor air have been determined in an office of multistory mechanicallyventilated building. The objective of the study was to evaluate the diversity of SO2, NO2and SPM inside building and penetration of pollutants, mostly found outside, from outsideto inside in an airtight building. Ground floor of the building was selected for study.Horizontal measurement of SO2, NO2 and SPM was done inside the building at foursampling stations.
Controlled milling of natural source materials has led to establishment of an allergen carrier particle sample bank for common, indoor, allergen proteins. Allergen reference powders are obtained from controlled processing of spent dust mite culture, roach colony fras, and cat and dog fur samples from pet grooming establishments.
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