Structural Design of the mCCHP-RES System - Design for Micro-Combined Cooling, Heating and Power Systems - page 193

Table 28 Utilization factor [ 18 ]
Illumination type / Utilization factor ʷ R

Room index k
0.6 0.8 1 1.25 1.5 2 2.5 3 4 5

≥ 0.7

Direct

0.48 0.59 0.67 0.76 0.82 0.89 0.94 0.98 1.02 1.05

Direct/indirect 0.1 ≤ ϕ < 0.7

0.23 0.30 0.36 0.43 0.48 0.56 0.62 0.67 0.73 0.77

Indirect

<0.1 0.17 0.23 0.29 0.36 0.41 0.48 0.53 0.57 0.62 0.65

Note Intermediate values can be obtained by interpolation of the room index values
Relative luminous ux / into the lower half-space of the luminaire