Abstract
For the next few years millions of fluorescent luminaires will become waste and will be replaced by light-emitting diodes—LED luminaires. According to the Cost European Cooperation in Science & Technology Program, the next step will be shifting from sustainability to regeneration (enabling social and ecological systems to maintain a healthy state and to evolve); to reach this point, a is circular economy becomes necessary. The Technical University of Cluj-Napoca’s Lighting Engineering Laboratory—LEL—is the main lighting independent consultant in Transylvania (the north-west region of Romania). For the Building Services Faculty, LEL adopted different energy efficient lighting solutions to replace existing fluorescent T8 luminaires. The best available techniques were evaluated over the last few years. Out of a range of different smart lighting control systems, LED were chosen and used for retrofitting the existing T8 luminaires or simply replacing them with new dedicated LED luminaires. The study analyzed five different lighting setups for upgrading the existing fluorescent T8 2*36W luminaires. One setup used T5 lamps and the others used retrofitted or dedicated LED lighting solutions. First the lighting quantities of each setup were evaluated under real and experimental conditions. Second, a programable power source was used for measuring power quality indicators corelated with the provided lighting outputs, under different voltage values and waveforms. For each lighting setup, an even and odd current harmonic limit check was performed in line with class C—lighting equipment, IEC 61000-3-2 requirements. A new energy efficiency and power quality indicator was proposed—the lighting apparent power density [VA/sq.m/100lx].
Highlights
A circular economy is a regenerative system in which resource inputs and waste, emissions, and energy leakage are minimized by slowing, closing, and narrowing energy and material loops
The second part of the study was dedicated to the measurement of the lighting setups power quality indices—PF, active/apparent power, waveforms, Total Harmonic Distortion (THD), etc
All the lighting setups were tested inside a 2 m × 2.4 m wide experimental s3h. eRdeswuiltths a 2.5 m high ceiling
Summary
A circular economy is a regenerative system in which resource inputs and waste, emissions, and energy leakage are minimized by slowing, closing, and narrowing energy and material loops. This paper will investigate the main power quality concerns arising from the use of LED lighting on our electrical networks. Some of them (A, B, D) were evaluated and installed in Starting from a surveillance case study of fluorescent and LED luminaires made by LEL inside some of the university buildings, the present paper conducted some further investigations regarding five different lighting setups. The study is based on the very large present use of T8 fluorescent lamps in all existing administrative, educational, and office buildings in Europe and in SustainRaboimlityan2i0a1.9T, 1h1i,s7s1t2u5dy evaluates the measured lighting levels as well as the power quality implications of 15 regarding the proper operating and lighting quantities of the five proposed lighting setups presented in Table 2 and Figure 2. The second part of the study was dedicated to the measurement of the ligThatbinleg2.sLeitguhptisngpsoewtupesr—qruecaelsisteydi3n0d0imcems—× 1P20F0, macmtilvuem/ainpapiraesr.ent power, waveforms, TdHetDai,neetSdce.:tuU2p3s0inVgLua±mp1isnr0oa%igrervaomlLtaaabmgleep pvoaDwriiametrmiosaonbusler(c2e0,P7m[oWVrwa,]ne2y30diVffL,eOi2rg[ue5lhmtn3ptit]unVstg)c,epnuarrieoBssailwnlaese,trcelaipnLpauelmydzine1[lod0mu,,s/WaaEnnf]ddficscaolciymppeewde2r0e voltage wAavefodrmedTsic—8atesdee
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