Assess the impact of two devices on the current THD of a building: a 13-W compact fluorescent
Question:
Assess the impact of two devices on the current THD of a building: a 13-W compact fluorescent lamp (CFL) with electronic ballasts and a laser printer while printing.
Use the data provided in Table 5.11 .
Table 5.11
Transcribed Image Text:
Electrical Load Incandescent lighting systems 100-W incandescent lamp Compact fluorescent lighting systems 13-W lamp w/magnetic ballast 13-W lamp w/electronic ballast Full-size fluorescent lighting systems (two lamps per ballast) T12 40-W lamp w/magnetic ballast T12 40-W lamp w/electronic ballast T10 40-W lamp w/magnetic ballast T10 40-W lamp w/electronic ballast T8 32-W lamp w/electronic ballast T5 28-W lamp w/electronic ballast High-intensity discharge lighting systems 400-W high-pressure sodium lamp w/magnetic ballast 400-W metal halide lamp w/magnetic ballast Office Equipment Desktop computer w/o monitor Color monitor for desktop computer Laser printer (in standby mode) Laser printer (printing) External fax/modem Real Power Used (W) 101 16 13 87 72 93 75 63 62 425 450 33 49 29 799 5 Power Factor 1.0 0.54 0.50 0.98 0.99 0.98 0.99 0.98 0.95 0.99 0.94 0.56 0.56 0.40 0.98 0.73 Current THD (%) 1 13 153 17 5 22 5 6 15 14 19 139 138 224 15 47
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Both devices have an rms voltage of 120 V ie Vrms 120 V their rms current can be determined usin...View the full answer
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Related Book For
Energy Audit Of Building Systems An Engineering Approach
ISBN: 9780367820466
3rd Edition
Authors: Moncef Krarti
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