When Do Solar Electric & Utility Back-Up Systems Make Sense?
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1 When Do Solar Electric & Utility Back-Up Systems Make Sense? Oil & Gas Industry Presentation Proprietary Information 2010 SunWize Technologies
2 When Do Solar Electric and Utility Back-Up Systems Make Sense? Presentation Overview Technology review Questions to consider Precise load information what we need to know Standard product line solutions Site installation photos Thank you for coming. Please contact me with any questions. Charlie Bachman, Oil & Gas Industry Sales Manager
3 How Photovoltaic (PV) Works External Circuit Sunlight [photons] Load Electricity Basic Solar Cell Construction Top electrical contact P-Type material [boron-doped silicon] P/N Junction N-Type material [Phosphorous-doped silicon] Base Contact 2
![electrical contact P-Type material [boron-doped silicon] P/N](/docs-images/44/1873589/images/page_3.jpg "Junction N-Type material [Phosphorous-doped silicon] Base")
4 Basic PV system configuration + PWM Regulation LVD Load Management PV Array + Load Battery 3
5 Integrated PV System Solar modules resist harsh weather conditions Corrosion resistant control/battery enclosure NEC code compliant overcurrent protection and safety disconnect Rainproof, passive airflow cooling with filtered vents Universal anti-theft mounting hardware available Sealed, lead-acid battery designed for deep discharge cycling Solid state electronics display battery state-of-charge and controller status/errors Fuse block Optional SOV lightning surge protection for PV input 4
6 Power Supply Choices Utility Power cost to extend grid $10K or more per mile Generator Sets operation expenses Wind resource highly variable & site specific Thermal Electric Generator maintenance issues Fuel Cell refueling issues 5
7 Power Supply Choices SOLAR ELECTRIC: Reliable, continuous power Cost-effective Low operating and maintenance costs 6
8 When does a PV system make sense? 7
9 PV system design objective Size the PV system for high reliability performance under all anticipated load and environmental conditions. #1 Consideration is load! 8
10 PV System Sizing Method PV Array = [L x 1.11 / 0.9 / WCSR / Imp] x [V/12] {A} {B} Where: L = equipment load in amp-hours/day Array to Load Ratio = 1.11 Losses = 10% WCSR = worst-case solar radiation in kwh/m*2/day Imp = Peak current rating of the PV module V = Nominal system voltage A = No of PV modules in parallel, B = No. of PV modules in series 9
11 PV System Sizing Method Battery = [L x 5 / 0.8 / T] x [V/12] {A} {B} Where: L = equipment load in amp-hours/day 5 = Number of days autonomy required for 99.95% power availability 0.80 = Capacity derate to account for a low voltage load disconnect function at 20% state of charge T = Temperature derate factor for lowest average monthly temperature V = Nominal system voltage 12 = Standard battery voltage A = Battery amp hour rating at 12V B = Number of batteries in series 10
12 PV System design objective? PV ARRAY POWER [Wp] INCREASING A 1 B 1 B 2 LOLP BATTERY CAPACITY [Ah] INCREASING 11
13 SunWize Off-Grid and On-Grid Solutions Complete, engineered, field-tested pre-assembled systems Comprehensive product line: - Power Ready for 1-75 watt loads - Power Station for watt loads - Power Online for watt loads System designed to match your load requirements Available in AC or DC voltages Quality-built, tested and inspected in the USA Minimal maintenance 12
14 SunWize Power Ready Applications PR500 Security camera system 13
15 SunWize Power Ready Applications PR720 Telemetry for water monitoring system 14
16 SunWize Power Ready Applications PR40 Gas wellhead monitoring 15
17 SunWize Power Ready Applications PR123 Water monitoring system 16
18 SunWize Power Ready Applications PR75 Remote GPS system 17
19 SunWize Power Ready Applications PR460 Air quality monitoring 18
20 SunWize Power Station Applications Cathodic Protection 19
21 SunWize Power Station Applications Telecom Base Station 20
22 SunWize Power Station Applications Remote Power Systems 21
23 SunWize Power Online Applications Power Online System Security System Power Online System Surveillance 22
24 Customer Support Dedicated account manager Experienced team of solar engineers Distribution centers in New York and California for timely delivery Lifetime System support Thank you for coming. Let me know how I can help. Charlie Bachman, Oil & Gas Industry Sales Manager cbachman@sunwize.com
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