This study presents the first Flemish monitoring campaign on indoor air quality in children’s living environment. The main aim of the study was to determine for sensitive groups of children the indoor environment exposure a result of contaminants that occ
A new way of the thermal level environment assessment based on “operative temperature thermal level” and new units “decitherm” is introduced, which allow the feelings of man to be followed. Simultaneously the fact that the operative temperature decrease i
Field measurements and recording of occupant thermal responses and behavioral actions in 4buildings clearly demonstrates adaptation: at higher outdoor temperatures, higher indooroperative temperatures are judged as comfortable by the occupants. The comfort voteshowever didnt relate well with the climate types Alpha and Beta as determined according tothe Dutch ATG guideline.
The objective of this paper is to demonstrate an ability of foliage plants quantitatively toremove chemical contaminants by experiments using a small desiccator for the different kindsof plant under the different luminescence and light sources, fluorescent, incandescent andlight-emitting-diode (LED) lamps. The foliage plants, Benjamin, Spathiphyllum, Areca palmand Concinna, cultivated in hydroponics were used.
Photocatalytic oxidation (PCO) tests have been carried out for toluene adsorbed on theactivated carbon fibers (ACFs) supported TiO2 photocatalyst in an environmental conditioncontrolled chamber. Through exploring the remnant of toluene and the accumulation ofintermediates on the TiO2/ACF catalyst including species, amount and their change processesunder different relative humidity (RH), this study aimed to explore the influence of RH on thePCO of toluene and the role of water vapor in the PCO process: PCO reaction paths and theaccumulation of intermediates on the TiO2/ACF catalyst.
When room ventilation is based on the stratification or zoning strategy, the ventilation airflow rate is determined on the grounds of the convection flows of the heat sources. Thus, inthe design phase of office ventilation, the convection flows of common office devices shouldbe known. Especially, to correctly dimension the ventilation air flow, it is important to knowthe volume flow rates. However, even if the convective power of an office appliance isknown, the cooling fan makes the prediction of the characteristics of the convection flow verydifficult.
In this study, energy consumptions associated with the change in outdoor air flow rate areanalyzed based on numerical methods. By employing the concept of ventilation effectiveness,possible reductions in the outdoor air load through reductions in the amount of outdoor airflow rate has been estimated. In addition, the effects of optimizing the capacity of HVACequipment on annual energy consumption and annual CO2 emissions have been analyzed.
The purpose of this paper is to assess the health and wellbeing implications of working in adeep plan office building in a temperate climate and illustrate how office design can add to ordetract from productivity.The authors have carried out post occupancy evaluation surveys on employees before andafter the move from a naturally ventilated, shallow plan office to a deep plan, air-conditionedoffice. The workforce and workload remained constant, which enabled true comparisonbetween building types.
A computer program for both field survey and laboratory experiment was developed toevaluate performance of office works and to link the findings from experiments to the actualoffices. The program has three parts: namely, Voting Tool, Task Tool, and PerformanceEvaluation Tool. In this study, the Performance Evaluation Tool, which is consisted of twelvestandard tests, was examined. The abilities required for the office works in two companiesand one branch of the government office were collected to verify the applicability of thePerformance Evaluation Tool.
The impact of simultaneous short-term exposure to three environmental parameters (temperature,noise and air quality) on human perception and performance was studied in two identical climatechambers. Eight conditions were created exposing the subjects for 20 minutes to combinations oftwo levels of operative temperature (23,5 C and 28,0 C), two noise levels (52 dB(A) and60 dB(A)) and two pollution loads (pollution load absent, pollution load present).
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