Modern Office Strandards Poland 2020

Modern Office Standards Poland 2020 / Rolfe Judd / CBRE /

C) ENERGY CONSERVATION

For lighting to provide both safety and comfort the following criteria described in Polish Stan- dards must be fulfilled:

Energy conservation in lighting could be provided by introducing:

Illumination level

• • • • • • •

Dimmable system

• • • •

Uniformity

Daylight control

Luminance distribution

Motion detector for presence control

Glare reduction

Energy efficient light sources

Colour (temperature) and colour rendering

/ CBRE / Rolfe Judd / Modern Office Standards Poland 2020

Ceilings and lighting / B8

Blinking and stroboscope effect

Recommendation: • It is recommended that office buildings are equipped with the most modern energy efficient lighting system

Maintenance factor

Avoiding high contrasts, light blinking and glare could reduce fatigue and discomfort of office staff. Illumination level depends on type of tasks. According to building regulations for gener- al office use the maintained illuminance level shall not be less than 300 Lux, for computer based tasks not less than 500 Lux and in cor-

ridors not less than 100 Lux.(*4) In addition to fulfilling minimum levels of illu- mination on the working area, eg. desk sur- face the minimum lighting levels for the rest of the surface must be satisfied. Light sources give a wide range of colour im- pressions related to their colour temperature described in Kelvin degrees:

• Lighting energy consumption is a vital factor in energy efficiency of the whole building.

B8 / Ceilings and lighting

Warm impression below 3000K

• • •

Neutral colour impression 3300–5300K

Cool colour impression above 5300K

The higher the illumination level is, the higher temperature of light source shall be used. For the offices best colour temperature is 3000K or 4000K depending on whether warm or neutral lighting is required. Colour rendering index (Ra) for office areas shall not be less than 0.8.

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