A good working environment will help to provide the user with a good sense of well-being,inspiration and comfort. The main advantages of good environments is in terms of reducedupgrading investment, reduced sickness absence, an optimum level of productivity andimproved overall satisfaction. Individuals respond very differently to their environments andresearch suggests a correlation between worker productivity and well-being, environmental,social and organizational factors.
The prevalence of SBS-symptoms is commonly used to characterize the indoor air quality ofbuildings. For economical analysis in building refurbishment and improvements of indoorenvironment, it would be very useful if we could quantitatively relate the prevalence orintensity of SBS-symptoms to productivity. The purpose of this study was to summarize thelinks between the SBS-symptoms and productivity, and demonstrate with a case study howthis information can be applied to a case building to evaluate the economical value of lowerprevalence of symptoms with a selected remedial measure.
The objective of this study was to evaluate the effects of building characteristics on selfreportedproductivity using the Building Assessment Survey Evaluation (BASE) dataset. Ofthe respondents surveyed, 28% reported one or more lost workdays over the last month due tobuilding-related symptoms, and 40% reported reduced ability to work.
Subjective experiments were conducted in a climatic chamber to evaluate the effect ofindividual control of air velocity on productivity. For the condition of constant air velocity(CAV) subjects were not allowed to control air velocity and for the condition of preferred airvelocity (PAV) they were allowed to control it. The chamber was conditioned at airtemperatures of 31C, mean radiant temperature of 31C, and relative humidity of 50%. Severalcomputer tasks were given to the subjects to evaluate task performance.
A new derivation of productivity calculation model based on pollution loads and contaminantremoval effectiveness is applied and the effect of the improved ventilation efficiency onproductivity is estimated. The findings show that the proportion dissatisfied could be asuitable predictor of productivity loss due to indoor air quality in different kinds of officework. The proportion dissatisfied is possible to calculate from olf and decipol units. In a caseof one person per 10 m2 (0.1 olf/m2) and low-emitted material (0.1 olf/m2), the total sensorypollution load is 0.2 olf/m2.
A method has been developed to investigate the comfort in office buildings. It is based onboth measurements and a questionnaire. The measurement apparatus, the so-calledAmbiometer, can record both the main comfort parameters, such as temperature, humidity,noise, light and odours, and the occupant's perceived comfort. Information regarding theindoor climate and the working environment is noted on the questionnaire.Experiments were conducted on about 50 offices in France.
The goal of the present study was to examine the influence of CO2 concentration in the air ofindoor spaces on human well-being and intensity of mental work. Ten experimental subjectswere used in four experimental conditions with different CO2 concentrations (600, 1500,3000, 4000 ppm). Microclimatic parameters (CO2 concentration, temperature and relativehumidity of the air, surface temperature of walls) were measured.
The impact of dry indoor air on comfort and health in winter was investigated in a crossoverintervention study in two floors of an office building in northern Sweden. The indoor airhumidity (normally 10-20% RH) was raised to 23-24% RH, one floor at a time, using steamhumidifiers. Questionnaires and objective (clinical) measurements were applied.
Indoor air quality is one of the main factors, which affect indoor environment. Through analyzing indoor air quality (IAQ), 9 main factors have been established in this paper, such as temperature, wind speed and relative humidity, and so on. By the adaptive degree of humans physiology and psychology to indoor environment, IAQ is partitioned into 3 grades, that is comfortable, rather comfortable and uncomfortable. By above 3 grades, the limitation scopes of every grade of all factors are given, accordingly.
A 2 × 2 replicated field intervention experiment was conducted in a call-centre providing a national public telephone directory service: outdoor air supply rate was adjusted to be 8 or 80% of the total airflow of 430 l/s (3.5 h-1); and the supply air filt
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