Plant Services - September 2007 - (Page 64) Performance Lighting Table 2. International Energy Conservation Code (IECC) and ASHRAE 90.1 allowed interior lighting power (W/sf) comparison IECC 2000 and 2001 Building or area type Automotive facility Classroom/lecture hall Conference/ meeting Corridor, restroom, support area Cafeteria/fast food Industrial work, <20 ft. ceiling Industrial work, 20 ft. ceiling Kitchen Library Lobby Manufacturing facility Office Parking garage Storage Workshop Entire building NA NA NA NA NA NA 1.5 NA 1.3 0.6 Tenant area 1.6 1.5 0.8 2.1 3.0 2.2 1.8 1.0 1.5 1.0 2003 and 2004 Entire building 0.9 NA 1.2 NA NA NA NA 1.3 NA 1.0 0.3 0.8 Tenant area NA 1.4 1.3 0.9 1.2 1.7 1.2 1.7 1.3 1.1 NA 0.8 2006 Entire building 0.9 1.2 1.4 1.3 1.3 1.0 0.3 0.8 1.4 1989 Entire building 1.0 2.1 1.4 1.3 1.0 1.3 1.0 1.0 1.0 ASHRAE 90.1 1999 Entire building 1.5 1.4 1.8 1.5 2.2 1.3 0.3 1.2 1.7 2001 Entire building 1.5 1.4 1.8 1.5 2.2 1.3 0.3 1.2 1.7 2004 Entire building 0.9 1.2 1.4 1.3 1.3 1.0 0.3 0.8 1.4 Key: - : Type doesn’t exist for this code year, NA : Calculation method isn’t allowed for this area or tenant space HID. However, they’re improving at a staggering rate, and are predicted to exceed 150 lumens/watt within five years. In comparison, pulse-start HID lamps operate between 100 lumens/watt and 105 lumens/watt. EPACT tax credits of as much as $0.60 per sq. ft. of improvements are available to qualifying businesses 3. The program has been extended to December 31, 2008. Credits are based on reduction of interior lighting power relative to the ASHRAE 90.1 (2000) energy code. A lighting power density 25% below code qualifies for a possible $0.30 per sq. ft. credit and 40% below code can earn $0.60 per sq. ft. As energy codes mandate more automated controls and controllability, new products are being brought into the market to accommodate them. Vendors now offer automated powered circuit breaker systems to replace the lighting panelboard. By integrating overcurrent protection, relay control and intelligence into a single panel, installation becomes simpler for the contractor. For more discrete control of small areas, relay sub-panels can be located closer to the loads being switched, while being networked together with main panel(s) for scheduling, override and other control needs. Both the 2004 ASHRAE 90.1 and 2006 International Energy Conservation Code (IECC) publications reduced the allowable lighting power density for buildings by an average of 26 percent (Table 2). When evaluating your plant lighting or planning a new facility, don’t discount the value of quality lighting. In most 64 cases, a quality lighting system won’t cost more than a traditional or typical design, once all factors are considered. Adjusting lighting levels to the task, introducing occupancy and schedule controls, and using high-efficiency ballasts and lamps can contribute to a better work environment while reducing energy consumption. Using spectrally enhanced lamps and daylighting can further improve efficiency and productivity. Don’t use first cost as your metric for system selection. Instead, make your purchasing decisions based upon life-cycle cost. This will pay off for you, your employees and your product in the long run. John McGonegle, P.E. is an associate and Chris Tilton, L.C. is lighting designer at KJWW Engineering in Rock Island, Ill. Contact them at mcgoneglejp@kjww.com and tiltoncb@kjww.com and (309) 793-3360. More resources at www.PlantServices.com/thismonth Maintenance issues – “Plan your lighting maintenance” Lighting inserts – “Reflector retrofits” Lighting controls – “Hello DALI” Solid-state lighting – “LEDs lead the way” Photoluminescent lighting – “When the lights go out” For more, search www.PlantServices.com using the keywords ballast, daylighting and lighting. www.PLANTSERVICES.com September 2007 http://www.PlantServices.com/thismonth http://www.PLANTSERVICES.com http://www.PLANTSERVICES.com
For optimal viewing of this digital publication, please enable JavaScript and then refresh the page. If you would like to try to load the digital publication without using Flash Player detection, please click here.