Integrated Lighting Efficiency Analysis in Large Industrial Buildings to Enhance Indoor Environmental Quality

Abstract

We present observations from evaluation of internal environmental quality of industrial halls with priority on daylighting in combination with the integral lighting. The physical parameters related to indoor lighting in large industrial halls in winter and summer periods were analyzed using in situ measurements and computational methods. These are part of a comprehensive research on indoor environmental quality of industrial halls with the aims of saving energy and providing a comfortable environment for the workers while improving the productivity. The results showed that the procedures used for evaluation of residential or office buildings may not be used for industrial buildings. We also observed that the criteria of occupants' comforts for indoor industrial buildings may differ from those of other kinds of buildings. Based on these results, an adequate attention is required for designing the industrial buildings. For this reason, appropriate evaluation methods and criteria should be created. We found the measured values of daylight factor very close to the skylight component of the total illumination. The skylight component was observed on average 30% that of the measured daylight factor values. Although the daylight is not emphasized when designing the industrial buildings and its contribution is small, but it is very important for the workers psychology and physiology. The workers must feel a connection with the exterior environment; otherwise, their productivity decreases.

Daytime Lighting Assessment in Textile Factories Using Connected Windows in Slovakia: A Case Study

“…We are only interested in one part of the indoor environment-daylighting. It is not possible to meet the daylight requirement for visibility at remote locations with unilateral daytime lighting (on only one side), as shown in Reference [64], where the hall is marked as "E". The case study in this document points out how there is illumination from two parties (that is, bilaterally) in the "F" and "G" halls.…”

“…In Reference [64], we considered hall E and in this paper, we evaluate hall F and hall G, which are illuminated by daylight from two sides. …”

“…In Reference [64], we considered hall E and in this paper, we evaluate hall F and hall G, which are illuminated by daylight from two sides. Figure 3 shows the view of the building from the outside and the internal view as a result of daylight simulation with the Radiance simulation program.…”

“…Hall "F" luminance (cd/m 2 ) in an overcast sky In hall E, the daytime lighting was provided on one side only (see Reference [64]). The results are similar to those in halls F and G, except that the symmetry is different.…”

“…Changing the level of the reflection component DFreflected at the distance from the daylight opening Dw is expressed by Equation (2) [64]. The reflected component DF at the distance Dw from windows changes from Dρ,min to Dρ,max, with an average Dρ,mean value.…”